48 CADUCIBRANCHTATA. 



13. Amblystom^ obscurum, Baud. 



Color above • and laterally brown, beneath brownish 

 yellow ; sides with darker vertical blotches barely per- 

 ceptible ; tail similarly marked ; head very broad ; gape 

 unusually large ; inner nares and tongue large, the latter 

 broader than long ; vomerine series of teeth four, V form 

 the angle anterior and interrupted along the median 

 line, branches reaching to the anterior border of inner 

 nares; inner anterior series about twice the length of 

 the external ones ; skin much corrugated ; costal grooves 

 twelve ; tail compressed. 

 Length 8 inches, 2.15 lines. Head to cervical 



fold 12.75 lines. 

 Tail 3 " 2 " Breadth of head 10.9 lines. 



Habitat Des Moines, Iowa. 



14. Amt>lystoma trisruptum, Cope. 



Color in alcohol dark blackish or bluish brown ; a 

 single series of large, yellow, transversely elliptical 

 blotches extending from the neck to tip of tail, and a 

 round one just behind the eyes ; body strong ; head 





