1925] Storer: A Synopsis of the Amphibia of California 
89 
larvae and their habit of seeking the bottom of deep pools would 
remove them from possible enemies at the margin of the water. 
The cool water in which development occurs probably is responsible 
for the prolonged larval development. No particular disadvantage 
would seem to accrue as a result of this feature because the creeks of 
the ‘fog belt’ are practically all perennial, and they do not fluctuate 
greatly in volume of water, between the rainy and dry seasons. 
Neoteny (cf. Gadow, 1901, pp. 63-64), if it occurs in nature, would 
simply continue the protection afforded by the aquatic environment. 
Batrachoseps attenuatus (Eschscholtz). Slender Salamander 
(PI. 9, figs. 21, 24) 
Salamandrina attenuata Eschscholtz (1833, pt. 5, p. 1, pi. 21). Original 
description, type from vicinity of San Francisco; followed (pp. 1-6, 
pi. 21) by anatomical account by Rathke. 
Batrachoseps attenuata, Baird (1850, p. 288). Monograph. 
Batrachoseps attenuatus, Cooper (1868, p. 8). General range. 
Batrachoseps nigriventris Cope (1869, p. 98). Type locality, Ft. Tejon, 
California. 
Batrachoseps attenuatus, Strauch (1870, p. 84). Monograph. 
Batrachoseps attenuatus, Boulenger (1882b, p. 60). Description. 
Batrachoseps nigriventris, Boulenger (1882b, p. 60). 
Batrachoseps attenuatus, Yarrow (1883, pp. 21, 152). Locality records. 
Batrachoseps nigriventris, Yarrow (1883, pp. 21, 153), part. 
Batrachoseps pacificus, Yarrow (1883, pp. 21, 153), part. 
Batrachoseps attenuatus, Cope (1889, pp. 127-128, text fig. 28). General 
account. 
Batrachoseps pacificus, Cope (1889, pp. 129-130), part. 
Batrachoseps nigriventris, Cope (1889, p. 129). 
Batrachoseps attenuatus, H. H. Wilder (1896, pp. 189-190, 191). Lung- 
less condition. 
Batrachoseps attenuatus, Hubbard (1903, pp. 158, 163). Habits at Berkeley. 
Batracoseps attenuatus, Whipple (1906b, p. 256). Note on anatomy. 
Batrachoseps attenuatus, Hilton (1909, pp. 53-54). Locality records. 
Batrachoseps attenuatus, Jacob (1910, pp. 280-282, figs. 1-3, pp. 298-300, 
329-330). Historical; habits in captivity. 
Batrachoseps attenuatus, Burke (1911, pp. 413-414). Eggs and young near 
Stanford University. 
Batrachoseps attenuatus, Camp (1915, pp. 329, 330). Critical; locality 
records. 
Batrachoseps attenuatus, Ruthling (1915, p. 62). In Santa Monica Moun- 
tains. 
Batrachoseps attenuatus, Fowler and Dunn (1917, p. 26). Critical; locality 
records. 
Batrachoseps attenuatus, Grinnell and Camp (1917, pp. 136-138, fig. 3). 
Range. 
Batrachoseps attenuatus, Stejneger and Barbour (1917, p. 13; 1923, p. 8). 
Range. 
