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vermiformis is easily distinguished from all other North Pacific
corals by its small, slender, cylindrical corallum and aligned
mural spots. Its small size and inconspicuous habit have
undoubtedly caused this relatively widespread species to have
been overlooked in the past. The specimen reported herein from
Soyo Maru-425 is 2.3 mm in calicular diameter and 3.2 mm in
length with large P2 and a fascicular columella. It can be
identified based on the generic diagnosis; illustrations of this
species may be found in the references listed in the synonymy.
MATERIAL EXAMINED.—New Records: Soyo Maru-425,1
specimen attached to a dead Crispatotrochus rubescens, TIUS
53695, Plate 22g. Previous Records: Syntypes of C. vermiformis,
MCZ; specimens reported by Cairns (1979, 1982) and
Cairns and Parker (1992).
TYPES.—Thirty-eight syntypes of Coenocyathus vermiformis
are deposited at the MCZ (Cairns, 1979). Type
Locality: Off Florida Keys, 274-329 m.
DISTRIBUTION.—The single Japanese record from off Koshiki
Retto, southwestern Kyushu (300 m) is the first report of
this genus from the North Pacific. It was apparently overlooked
by Yabe and Eguchi (1942b) in their report of Cyathoceras
rubescens. Elsewhere: It is known to be common on both
sides of the Atlantic; off St. Paul and Amsterdam Islands,
southern Indian Ocean; the New Zealand region, including the
Antipodes and Campbell Plateaus; off Tasmania; and off
southeastern Australia; 80-1229 m.
Truncatoguynia Cairns, 1989a
DIAGNOSIS.—Solitary, elongate compressed-cylindrical, and
free. Budding by transverse division. Epitheca smooth; rows of
thecal pores occur in every intercostal space, alignment of rows
appearing to flank the secondary costae. Septa only slightly
exsert and variable in symmetry, arranged in 2 or 3 size classes.
Pali and columella absent.
TYPE SPECIES.—Truncatoguynia irregularis Cairns, 1989a,
by monotypy.
Truncatoguynia irregularis Cairns, 1989
PLATE 30r/
Truncatoguynia irregularis Cairns. 1989a:43. pi. 22: figs. f,g; pi. 23: figs. c,f.
DESCRIPTION.—Corallum an elongate, laterally compressed
cylinder with rounded thecal edges. Largest Japanese specimen
examined 44.4 mm in length, with calicular diameters up to 5.8
x 4.3 mm. Base of specimens (anthocauli) terminate in an
elliptical scar about 3.9 x 3.1 mm in diameter, revealing 12-24
primary septa. Theca thin, smooth, and in ail Japanese
specimens, somewhat wom, the coralla obviously dead when
collected. Thecal pores irregular in appearance, more common
toward the base of a corallum and often absent from theca near
calice. In several weathered coralla and the older (basal)
portions of others, the secondary septa and associated overlying
theca are absent, resulting in a characteristic diagenetic form
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
consisting of 12-18 lamella (septa) radiating from a central
columella. Corallum white.
Most coralla hexamerally arranged in three cycles of septa
and an additional pair of S4 in each of the four end half-systems
according to the formula: S1_2>S3>S4 and a total of 32 septa;
however, one specimen had 14 primary septa and another had
18. Su2 slightly exsert (1.1 mm) with slightly sinuous inner
edges that are strongly fused to the columella. S3 only one-third
to one-half width of an S1 and also have slightly sinuous inner
edges, but they do not attain the columella. S4 rudimentary,
consisting of a short row of spines. Fossa deep. Columella an
elongate fusion of lower, inner edges of S^.
DISCUSSION.—This species was previously known only
from its type locality in the South China Sea. Although all the
Japanese specimens were dead when collected, they do allow a
refinement of the original description and reinforce the
observation that the septal symmetry of this species is indeed
irregular.
MATERIAL EXAMINED.—-New Records: TM (KT9202,
YT1), 1, USNM 92753, 2, ORI. Previous Records: Types of
T. irregularis, USNM.
TYPES.—The holotype (81890) and 10 paratypes (81891) of
T. irregularis are deposited at the USNM. Another paratype is
deposited at the Australian Museum (G15252). Type Locality:
Alb-5311: 21°33'N, 1 ^tf'E (South China Sea north of
Pratas Island), 161 m.
DISTRIBUTION.—Osumi Shoto, northern Ryukyu Islands;
north of Pratas Island, South China Sea; 80-161 m.
DIAGNOSIS.—See Part 1.
Family FLABELLIDAE
Flabellum Lesson, 1831
Subgenus Flabellum (Flabellum) Lesson, 1831
DIAGNOSIS.—See Part 1.
Flabellum (F.) pavoninum Lesson, 1831
PLATES 30g-i, 3la-e
Flabeilum pavoninum Lesson, 1831:2.—Gray, 1849:75-76.—Marenzeller,
1888a:41-42.—Cairns, 1989a:46-50, pi. 23: figs, g-1; pi. 24: figs. a-d,g,h
[synonymy].
Flabellum distinctum Milne Edwards and Haime, 1848a:262.—Marenzeller,
I888a:42.—Yabe and Eguchi, 1932a:387, 389; 1932b:443; 1941b:101;
l942a:93-95, pi. 5: figs. 3-6; pi. 6: figs. 3,4,9, 10; pi. 7: fig. 7; 1942b:l 12,
130-131, pi. 11: figs. 10-12.—Eguchi, 1938, table 2; 1944:132-134, 5 figs;
I968:C44 [in part: pi. C28: figs. 5, 6].—Utinomi, 1965:255.—Eguchi and
Miyawaki, 1975:58.—Mori and Minoura, 1980:321-326, figs. 1-5.—Zou
et al., 1981. pi. 1: figs. 2, 3.—Song, 1982:136-137, pi. 3: figs. 1-4;
1991:135.
Flabellum coalitum Marenzeller, 1888a:48-49.—Cairns, 1989a:46, 50, pi. 24:
figs, e.f.i-1.
Flabellum sp. cf. distinctum.—Okutani, 1969:12.—?Hamada, 1969:254.
DESCRIPTION.—Corallum compressed, the planar faces
meeting at acute edges and projecting 2.5-3.8 mm beyond the