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20<br />
Vaughan, 1903. Caryophyllia californica is easily distinguished<br />
by having five complete cycles of septa at a GCD of<br />
only 10.7 mm (Plate 5d,e, USNM 92479). The holotype of C.<br />
pedroensis (Plate 5c,f, USNM Ml64736) resembles C. arnoldi<br />
in being free and having 48 septa, but its poor preservation does<br />
not allow a definite identification, none of its pali being intact.<br />
Durham (1947:33) suggested that C. pedroensis Vaughan,<br />
1903 might be the senior synonym of C. alaskensis Vaughan,<br />
1941, but it is more likely to be a junior synonym of C. arnoldi<br />
Vaughan, 1900.<br />
The holotype of C. arnoldi (USNM Ml57509) is unattached,<br />
whereas all subsequently collected Recent specimens are firmly<br />
attached and have a stout pedicel. This being the only apparent<br />
difference between the Pleistocene type and Recent species, I<br />
follow Durham's (1947) reasoning in using this name for the<br />
Recent species.<br />
MATERIAL EXAMINED.—New Records: Alb-2862, 1,<br />
USNM 19264; Alb-2864, 6, USNM 19211; Alb-2886, 6,<br />
USNM 92467; Alb-2893, 4, USNM 19283; AIb-2935, 1,<br />
USNM 19258; Alb-2936, 1, USNM 19257; Alb-3170, 4,<br />
USNM 19232; Alb-3445, 3, USNM 19271; Alb-3449, 3,<br />
USNM 19273; Alb-3451, 1, USNM 19268; Alb-3452, 1,<br />
USNM 36430; Alb-3459, 1, USNM 19267; Alb-3666, 4,<br />
USNM 92468; Alb-4328, 1, USNM M547401; Alb-4332, 1,<br />
USNM M547399; Alb-4359, 1, USNM 92470; Alb-4361, 2,<br />
USNM 77418; Alb-4377, 1, USNM M547402; Alb-4431, 2,<br />
USNM 92471; Alb-4463, 1, USNM 77419; Alb-4518, 2,<br />
USNM M547400; Lower Inlet, B.C., 2, USNM M547319 and<br />
M547321; Departure Bay, B. C, 4, USNM M547323; Work<br />
Canal, B. C, 1, USNM M547322; 60°22TSf, 147°42'W, 70-73<br />
m, 2, USNM 91421; Treadwell Mine, Alaska, Pleistocene, 2,<br />
USNM Ml23169; Snittishan, Juneau, Alaska, Pleistocene, 3,<br />
USNM 92466; Eshany Bay, P.W.S., 149 m, 7, UA; <strong>Res</strong>surection<br />
Bay, Alaska, 58 m, 1, UA; 60°48TSf, 148° M'W, 1, UA;<br />
Point Valdez, Alaska, 1, UA; 45°01.5'N, 124°43.2'W, 273 m,<br />
13, UA; Channel Islands, 10, CAS 74811, 74803, 74909,<br />
74805, 74908, 80909, 80899; off Cordell Bank, 8, CAS 74831,<br />
74832; OCSEAP 20136, 2, CAS; OCSEAP 26502, 1, CAS;<br />
OCSEAP 20134, 1, CAS; OCSEAP 26499, 1, CAS; off<br />
Bodega, California, 1, CAS 80911; 32°46.5TSf, 118°2O.5 / W,<br />
505 m, 1, SIO Co 1248; 32°00'N, 117°56.2'W, 183 m, 1, SIO<br />
Co 404; 79 specimens from off British Columbia from 40-377<br />
m, all deposited at the RBCM and cataloged as: 974-389-5,<br />
974-224-6, 976-1030-1, 976-1051-1, 976-1033-2, 976-111-50,<br />
976-17-3, 980-257-40, 980-245-32, 980-268-16, 980-264-24,<br />
980-256-18, 981-202-3, 981-204-2, 981-208-1, 986-275-3,<br />
986-278-6, 988-2-12, 988-15-6, 988-2-13. Previous Records:<br />
Holotype of C. arnoldi (USNM); Albatross specimens<br />
reported by Durham, 1947 (USNM); specimen of Talmadge,<br />
1972 (CAS); Vityaz (stations 4139, 4179, 6127) specimens of<br />
Keller, 1981 (IOM). Reference Specimens: Holotypes of C.<br />
californica and C. pedroensis (both USNM).<br />
TYPES.—The holotype (Plate 4a,b) of C. arnoldi is deposited<br />
at the USNM (M164736). Type Locality: San Pedro, California<br />
(Pleistocene).<br />
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY<br />
DISTRIBUTION.—Known from San Diego to Prince William<br />
Sound, Gulf of Alaska, including Queen Charlotte Islands,<br />
Vancouver Island, San Juan Island, off British Columbia, and<br />
the Channel Islands and Banks; 40-656 m.-Pleistocene of San<br />
Pedro, California and Juneau, Alaska.<br />
Caryophyllia (C.) alaskensis Vaughan, 1941<br />
PLATE 4f-h.j<br />
Caryophyllia alaskensis Vaughan, 1941:280-281, pi. 40: figs. 1-4.—Durham,<br />
1947:33 [in part: only specimen from Alaska].—Not Durham, 1949:152-<br />
153 [= C. arnoldi].—Not Durham and Barnard, 1952:81 [= C. arnoldi].—<br />
Talmadge, 1972:81 [in part: Alaskan specimen].—?Ricketts and Calvin,<br />
1952:37.—Not Keller, 1981a:21 [= C. arnoldi and C. japonica].—Austin,<br />
1985:81 [in part: northern records].—Bythell, 1986:14 [in part: not pi. 4:<br />
figs. C-F, only northern latitude range].—Cairns et al., 1991:47.<br />
DESCRIPTION.—Corallum ceratoid, always attached through<br />
a relatively slender pedicel (18%-33% GCD). Calice circular<br />
to elliptical; calicular edge finely serrate, each septum forming<br />
a broad equilateral apex. Largest specimen examined (Alb-<br />
3317) 21.1 x 16.6 mm in diameter and 20.3 mm in height.<br />
Theca smooth, porcellaneous (not granular), and thin (translucent);<br />
milky white. Cu3 occasionally slightly ridged near<br />
calicular edge; otherwise, costae not expressed. Thin, chalky<br />
white intercostal striae delimit costae but there is no relief to<br />
theca.<br />
Septa often hexamerally arranged in four complete cycles<br />
(48 septa and 12 pali) according to formula: S1_2>S3>S4, but<br />
large coralla have 56 septa and 14 pali or 64 septa and 16 pali,<br />
the largest specimen having an almost complete fifth cycle (94<br />
septa). Instead of a fourth size class of septa to accommodate<br />
the fifth cycle, larger calices maintain only three size classes by<br />
adding equivalent half-systems of septa (i.e., 1 S2, 1 S3, and 2<br />
S4), rather than two pairs of S5. Su2 very slightly exsert (less<br />
than 1 mm) and have straight to slightly sinuous inner edges<br />
that merge with the columella deep within fossa. S3 only half<br />
width of S.|_2, having slightly sinuous inner edges and bordered<br />
internally by very sinuous, large pali, each 1-3 times width of<br />
an S3. P3 prominently granulated and extend into columella. S4<br />
about three-quarters width of S3 and have sinuous inner edges.<br />
Fossa moderate to shallow, containing a fascicular columella<br />
composed of 6-17 narrow twisted laths, which are usually<br />
independent of one another.<br />
DISCUSSION.—Comparisons to the closely related C. arnoldi<br />
and C. japonica are found in the accounts of those species.<br />
MATERIAL EXAMINED.—New Records: Alb-3317, 6,<br />
USNM 19206; Alb-4225, 8, USNM 92459; Alb-4768, 1,<br />
USNM 92460; Alb-4782, 1, USNM 92461; Alb-4788, I,<br />
USNM 92462; Alb-4789, 12, USNM 82175; Alb-4791, 20,<br />
USNM 82174; Alb-4792, 38, USNM 83523; Alb-4860, 1,<br />
USNM 92463; Alpha Helix-30, 1, UA; Lets Go-80, 1, UA; 2,<br />
RBCM 980-238-15. Previous Records: Syntypes of C.<br />
alaskensis; specimens reported by Durham, 1947 (USNM).<br />
Reference Specimens: Specimens reported as C. alaskensis<br />
by Keller (1981a) (IOM).