66 



BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



cies is necessary. The type of A. hicolor now in the museum of the 

 Academy of the Natural Sciences of Philadelphia furnishes the meas- 

 urements found in the first column. 



Measurements. 



Length from snout to gular fold ^ 



Lenglli from snout to axilla. * 



Length from snout to groin ^ 



Length from snout to end of vent 



Length from axilla to groin 



Length of lower leg and foot 



■Width of head 



Fore-arm and foot into distance from snout to groin. . . 

 Lower leg and foot into distance from snout to groin. . 

 Whole anterior limh into distance from snout to groin 

 Whole anterior linih into distance from snout to vent. 



A. blcolor. 



A. copean- 

 um. 



Iri. Lin. 



In. Lin. 



9.75 



8.5 



1 2.5 



1 L8 



2 7.2 



2 3 



3 2. 3 



3 



1 4.5 



1 L15 



8.8 



9 



8.75 



7.5 



Times. 



Times. 



4.6 



3.6 



3.54 



3 



3* 



2T^t 



44 



3i\ 



The above table of comparative measurements shows that A. hicolor 

 has, in comparison with A. copeanum^ a longer and still broader head; 

 in spite of this, a distance from the axilla to the groin greater than that 

 from the snout to the axilla, a much shorter pelvic region, and shorter 

 fore and hind limbs. 



Found at Irvington, near Indianapolis, April 7, 1885, by Mr. George 

 H. Clarke. 



The specimen on which the description is based was found dead and 

 somewhat mutilated. The injury that it has suffered does not, how- 

 ever, ill any way obscure the characters of the species, amounting, as 

 it does, only to a loss of the entire left fore-limb and slight fractures 

 of a few of the bones of the anterior part of the head. 



I have not seen this species, and know it only from the description 

 and figures of Professor Hay. I have copied the greater part of the 

 former in the preceding paragraphs. It is evidently a distinct species, 

 characterized among other things by the shortness of its body. In 

 coloration it is about identical with the Amblystoma jeffersonianum 

 fuscum. 



AMBLYSTOMA BICOLOE Hallowell. 



Proc. Ac. Phila., 1857, p. 215; Cope, eod. loc, 1867, p. 178; Strauch, Salam., p. 03; 

 Boulenger, Cat. Batr. Grad. Brit. Mus., ed. il, 1882, p. 42. 



In the tyi^e specimen of this species the usual superorbital and lat- 

 eral frontal serirs of large pores are not discernible. In a second spec- 

 imen they are well marked. In the former the skin is quite smooth, 

 with eleven lateral grooves, and the folds of the throat and side of the 

 head not strongly marked. The head is broad and obtuse, entering 

 the length of the groin 3.75 times. The front convex in profile, con- 

 taining the length of the fissure of the eye in its width between anterior 

 canthus of same 2.75 times. The same measure is a trifle less than the 



