98 
University of California Publications in Zoology [V° L - 27 
Batrachoseps catalinae Dunn. Catalina Island Salamander 
Batrachoseps attenuatus, Van Denburgh (1905, pp. 3, 16). On Santa Cata- 
lina Island, California. 
Batrachoseps attenuatus, Van Denburgh and Slevin (1914, pp. 132, 137). 
Batrachoseps catalinae Dunn (1922&, pp. 62-63). Original description, 
type from Santa Catalina Island, California. 
Diagnosis . — Size small, total length up to 121 millimeters (4% 
inches) ; body worm-like ; limbs small, digits reduced to 4 on each 
foot, innermost rudimentary ; costal grooves 19 to 21 [costal folds 
18 to 20?]; coloration dull brown above, paler beneath; vomerine 
teeth in irregular patch. 
Comparisons . — Distinguished from all other California salaman- 
ders except species of Batrachoseps by slender worm-like body, reduced 
limbs, and presence of more than 15 costal folds; from Batrachoseps 
attenuatus by smaller size, rudimentary inner digit, and paler color- 
ation especially on ventral surface; from B. major by smaller size, 
and rudimentary inner digit on all feet; from B. pacificus of the 
northern Channel Islands by 18 to 20 instead of 16 costal folds. 
[Diagnosis and comparisons based on data in original description; no 
specimens at hand. — T. I. S.] 
Range — This species is restricted to Santa Catalina Island, off the 
coast of Los Angeles County, California, 
Remarks . — Van Denburgh (1905, p. 16), while placing salamanders 
from Santa Catalina Island, California, under the name of the 
mainland species Batrachoseps attenuatus , gives the coloration of one 
individual as “uniform slaty brown above, paler below” and states 
that three others differ “from this one only in the slightly paler 
coloration.” Van Denburgh and Slevin (1914, p. 137) say that “the 
salamanders of Catalina seem not to differ from those of the main- 
land.” 
As Dunn (19225, p. 63) points out, his catalinae is not similar in 
coloration to attenuatus; the latter has a light dorsal band (stripe), 
whereas major, leucopus [of Los Coronados Islands], and catalinae 
are the reverse of this, with the lighter color area on the ventral 
surface. 
In the absence of material I am unable to pass definitely upon the 
status of Dunn ’s form, but from the description he gives I am inclined 
to believe that the Catalina salamander constitutes a valid species, 
though distinguished but slightly from the mainland stock. Parallel 
cases of slight differentiation are afforded among other classes of verte- 
brates such as Urocyon catalinae, Reithrodontomys m. catalinae, Pero- 
myscus m. catalinae, Citellus b. nesioticus among mammals, and 
