72 CADUCIBRA>,~CHIATA. 



9. Pletiiodon persiiuilis, Gray. 



Mivart claims this is not a Plethodon. and designates 

 it as Pectoglossa, but not having a specimen or a good 

 description I am unable to satisfy myself of its truerela-* 

 tion, and hence permit it to remain here. 



Color black, speckled with white ; laterally the specks 

 are closer and more numerous ; hind toes elongate, une- 

 qual; tail compressed. 



Habitat Siam. 



Dr. Gray states that the only difference he is able to 

 discover between two specimens of this species received 

 from Siam and Plethodon gliitinosas from the United 

 States is that "the toes of the hind foot appeared rather 

 longer, more slender, and unequal in length, and the tail 

 much more compressed.*' 



6. Cjreotriton, Gene. 



Oedipus, Gray. 



Vomerine teeth in a transverse row behind the inner 

 nares, medially forming a sharp angle pointed back- 



