:i.; ( 



D.S 



1!ILLi;tin-:u, unitkd .stativs national musioum. 



lianf tl.c cast spock'S l.dnj;- (loscrilu'd as biowu witl. a «ia.v dorsal 

 stii...' iiistca.l of black with a yellow dorsal stripe. In it the limbs 

 a,v Ja banded, and the bellyis nnitbnnly i.ale, contrary to what holds 

 i„ the present species, which is the han.lson.est of the j;vnus. I ob- 

 tain.Ml fotir si.ecin.ens of this salamander, nnder lo-s, in a, swamp near 

 (I,c liea.l of (he S(.nth IJoise lliver, on the south side of the Sawtooth 

 Mountain ranjje, Idaho. 



ff ^ 



35- 



Flo. 18. Aiiihli/Kloma fpijcaulhinn. Atlanta, Miilio; |. 



This species is in all respects more robust than the A.macrothu-ttfhm, 

 and is more brilliantly colored. Its tints are (hose of the Kun.pean 

 SaUmandnt ni<iculi»s(i,iuu\ are bri};hter than (Iiose of any other species 

 of the j-enus. Its hyoid apparatus is represented on IMate L';{, tij,'. 8. 



CIIONDKOTUS Cope. 



Aineiic'uii Niitiirali.st, iet<7, ]>. riS (Jamiiiry). 



Otog'.ossal cartilajj:e trianj^fular, attached by a base to each side of the 

 Jiyi)obranehial cartila{;e. 



in otlier respects this genus agrees with Anddystoma. The larva of 

 the type species {C. tcnchrosus), the only one I have ideiititicd, dillers 

 from tliose of AmbUiftoma in the absence of basal branchial processes, 

 and (tf spleiiial teeth. (Plates L'O-LM.) 



1 have examined the hyoid apparatus of the sjiecies of this genus, 

 and 1 refer two others to it. One of these, (\ vhujuhttns, very probably 

 belongs here; the position of the otlier, C. tc.vanus, is altogether uncer- 

 tain as yet. 



Considered with lespect to the forms of their otoglossal cartilages 

 tiiese species fall into three sections, as follows (see IMates LTj and L'(J): 



(I) Tlie cartilage uninterrupted in front. C. (cntbrosus, C. aterriniKs. 

 and V. ilrvortiaitits. (Figs. 1, '1-5, 8-".».) 



(•J) Tiie cartilage divided in front, and without median processe.s. (J. 

 2)<n-oticu>i. (Figs. 0-7.) 



(.'{) The cartilage divided, each half with an internal and external proc- 

 ess in front. (Figs. 1-2, I'l, 2().) C. microstomits, 



111 addition to tliese characters, it may be observed that in the C. 

 tenchrosus and C. dterrimus there is a sheet of strong librous tissue 

 extending antericrly from the otoglossal cartilage, and forming the 

 base of the tongue. A few similar fibers are found in the correspoiul- 

 ing position in the A. pary>tk'iim. 



IJesides the characters of the otoglossal cartilage I have already 

 given, I may add thac in the species with entire anterior border, the crest 

 of the superior surface of the basibranchial appears to pass through a 



foi-a 

 lissi 

 IM. 1 



T! 



A 



r 



temb 

 Th 

 tiori] 

 Texa.^ 

 from 

 Th( 



1. Vi 



