50 REPORT OF NEW JERSEY STATE MUSEUM. 
lieved to be same are at least very closely related. ‘They have 
been seen to complete their metamorphosis, and can breed while 
still branchiferous, though the persistance in that stage for any 
great length of time is probably due to their forced aquatic sur- 
roundings. ‘They are said to complete their metamorphosis at 
times in late summer and then take up terrestrial life, hiding in 
holes, etc., from which they emerge frequently after rains. Cope 
states that New Jersey examples are almost always more fully 
developed than western ones, and suggests that it may be due 
to the former district being warmer than the latter. In captivity 
they have been found to feed on small frogs. Dr. Abbott tells 
me he once saw a single example at Princeton along the edge of 
a brook. 
Salamandra tigrina Green, Journ. Acad. Nat. Sci. Phila., V, 
pt. 2, 1825, p. 116.—Harlan, Journ. Acad. Nat. Sci. Phila., V, 
pt. 2, 1827, p. 328 (evidently reference).—Harlan, Med. Phys. 
Res., 1835, p. 93 (copied).—Holbrook, N. Am. Herp., III, 1838, 
PelOG srl 25; 
Triton tigrinus Holbrook, 1. c., Ed. 2, V, 1842, p. 79, Pl. 26. 
Ambystoma tigrinum Hallowell, Proc. Acad. Nat. Sci. Phila., 
VIII, 1856, p. 7—Baird, Journ. Acad. Nat. Sci. Phila., (2) 
III, 1855-58 (January, 1858), p. 350. 
Amblystoma tigrinum Cope, Proc. Acad. Nat. Sci. Phila., 
1867, p. 179.—Abbott, Geol. N. J., 1868, p. 804.—Abbott, Nat. 
Rambles, 1885, p. 477.—Cope, Bull. U. S. Nat. Mus.,. No. 34, 
1889, p. 68, Pl. 25, fig. 7—Sherwood, Proc. Linn. Soc. N. Y., 
1894-95, No. 7, p. 28.—Stone, Am. Nat., XL, 1906, p. 160. 
Ambystoma jeffersonianum (Green). 
IBTGATE 072 
Jefferson’s Salamander. 
Body slender, and fore limb not reaching hind limb when 
appressed. Costal grooves usually 12. Head small. Eyes far 
back. Palms of hands and soles of feet with or without an in- 
distinct tubercle. Color in life olive-brown or blackish, usually 
