116 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



a foiirteeutb. The tail igi also very distiuctly aimulate-grooved. 1 

 count thirty-one grooves behind the femora, and the injured extremity 

 is not grooved. Indistinct grooves are apparent on the tails of several 

 of the species of Amblystoma. There are no rows of mucous pores on 

 the head or body of this species, nor accumulations of crypts on the 

 head, body, or tail. 



The palm is wide, and the fingers not long, though of unequal length. 

 The lengths of the fingers, beginning with the shortest, are, 2, 5, 3, 4, 

 and their phalanges, 2, 2, 3, 2. The toes of the hinder foot are, in order 

 of length, 1, 5, 2, 3, 4; and the phalanges, 2, 2, 3, 4, 2. 



This species is larger than the L. lepturus or tlie GJiondrotus micro - 



stomus. 



Measurements. 



M. 



Total length .180 



Length to base of taU 092 



Length to groin 077 



Length to axilla 022 



Length to canthus oris 009 



Length of fore limb from axilla 0172 



Length of fore-foot 007 



Length of bind limb from groin 022 



Length of hind foot 012 



Width of head ' 012 



Depth of tail at middle 009 



The typical and only speci men is preserved in alcohol. The color above 

 everywhere is dark brown ; below, very light brown. The sides are 

 paler, perhaps i)ale yellow in life, and the color ascends at several 

 points, so as to form cross-bands of moderate width and very well de- 

 fined. One of these crosses at the occiput and one at the axillajj be- 

 tween the latter and the groin there are five, nearly equidistant. 

 There is an imperfect one at the sacrum, and there are seven on the 

 tail, one of them imperfect. The coloration of this species is quite 

 unique in the genus in its regularity. 



The locality of the only specimen, Ko. 11504, is unknown. 



LINGUiELAPSUS LEPTURUS Cope.* 

 American Naturalist, 1887, p. 88. 

 Amhlystoma lepiurum Cope, Proc. Amer. Philsoph. Soc , 1886, p. 524. 



This species resembles the Chondrotus cingulatus, but differs from it in 

 the entirely different form and proportions of the tail. This part is very 

 slender in the L. lepturus, with round or vertical oval section, without 

 keel above, and lacking very little of being as long- as the head and 

 body together. The legs are of the same proportions as in the G. cin- 

 gulatus; that is, when appressed they are separated by a space equal 

 to the length of the posterior foot, showing their greatly superior length 

 to those of the C. microstomus. The body is cyliudric. The head is 



* Plate 24, figs. 12, 13. 



