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55 CALIFORNIA ACADEMY OF SCIENCES [Oc. Papers of lip; internal nares small; tongue large, ovate, not emarginate, attached along median line but free laterally and, for a short distance, behind; neck a little narrower than body, no parotoid gland, gular fold continued up and then forward as a groove to eye; a groove along vertebral line from head to tail; costal grooves between limbs 16, not continued to midline either above or below; limbs a little stouter than in P. intermedius, and with shorter digits, anterior with four and posterior with five digits; digits rather short, with rounded ends, each with a small terminal pad, inner shortest, third longest, second finger longer than fourth, second toe shorter than fifth, third and fourth toes nearly equal, broadly palmate but no web; adpressed limbs separated by about six costal folds. "The coloration is similar to that of P. intermedius, but heavily clouded with black. The general color is blackish brown above and below; a broad, lighter brown, black-edged, dorsal band extending from snout to base of tail; lower surfaces sprinkled with small whitish dots, which become larger on the sides, gular region and chin" (Van Denburgh, Proc. Calif. Acad. Sci., Ser. 4, VI, No. 7, 1916, p. 216). Measurements of 3 Specimens in the Collection of the California Academy of Sciences Snout to anus 29 53 49 Front of anus to base of tail 15 38 58 Width of head 4 8 T^^ Nostril to orbit IVz 2 IV2 Snout to orbit 2 3 3 Snout to gular fold 7 12 11 Snout to fore limb 9 16 14y2 Gular fold to anus 22 41 38 Axilla to groin 17 31 30 Adpressed limbs separated by 7 14 11 Fore limb 6 9 9 Hind limb 7 11 IQVn Heel to end of longest toe 2V^ 5 5 Breadth of foot iy2 3 3% Variation.— The three adult specimens are identical in structural characters and coloration. No. 29,101 is young, measuring 28 mm. from snout to anal opening, with tail 14 mm. long. It is like the three adults in the number of its costal folds and general coloration except that the dorsal band is bright pink, clouded on the head and along the mid-dorsal line with dark brown. This brightly colored band extends from the snout, along the back, nearly half way down the tail. This specimen looks very much like P. intermedius, but the lower surfaces are darker.
No. 16] AMPHIBIANS OF WESTERN NORTH AMERICA 57 Remarks.— While this species is manifestly closely related to Plethodon intermedius and P. vandykei, it can easily be distinguished from both by the greater number of its costal grooves and the greater space between its adpressed limbs. The number of costal grooves is sixteen in all four specimens of this species, while in Plethodon vandykei these grooves are twelve and thirteen, and in P. intermedius they are thirteen or fourteen. Plethodon intermedius is of more slender build, with longer toes, more truncate snout, and less dusky coloration. The parotoid gland and webbed feet of P. vandykei are characters which should render its recognition easy. Distribution.— This species is known only from four specimens collected near Requa, Del Norte County, California. Habits.— The few specimens known were found logs in moist woods. under decaying Plethodon vandykei Van Denburgh Washington Salamander Plate 7 Plethodon vandykei Van Denburgh, Proc. Calif. Acad. Sci., Ser. 3, Zool., IV, No. 4, 1906 (reprint 1915), p. 61 (type locality, Paradise Valley, Mount Rainier Park, Washington) ; Stejneger & Barbour, Check List N. Amer. Amph. Rept., 1917, p. 17; Stejneger & Barbour, Check List N. Amer. Amph. Rept, 1923, p. 11; Pratt, Verteb. Animals of the U. S., 1923, p. 159; Dunn, Anniv. Pubis. Smith College, 1926, p. 151. Description. — "General form similar to P. oregonensis [=Ensatina eschscholtzii] but body not quite so much flattened, tail less compressed and limbs shorter and stouter; tail cylindro-conic, somewhat compressed in posterior half, nearly equal to length of head and body; head depressed, about width of widest part of body; snout broadly truncate from above, rounded in profile; eyes moderate, smaller than in P. oregonensis, rather prominent, separated anteriorly by nearly twice the length of the orbital slit; nostrils small, near corners of snout, separated by about their distance from pupil; subnasal groove descending nearly to margin of lip; line of lip descending slightly below corner of snout and ascending below posterior edge of orbit; palatine teeth in 2 slightly curved series beginning some distance behind and a little internal
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Occasional Papers OF THE CALIFORNIA
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To the memory of JOHN VAN DENBURGH
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