50 SALAMANDRIDJE. 



Sir edon gracilis, Baird, Itep. U.S. Expl. Surv. xiii. part iv. p. 13, 

 pi. 44. f. 2, is perhaps the larva of A. tenehrosum. 



15. Amblystoma texanum. 



Salamandra texana, MattJies, Allyem. deutsche naturh. Zeitunq, i. 



1855, p. 266. 

 Amblystoma texanum, Baird, U.S. Mex. Bound. Surv. ii. Sept. p. 29, 



pi. 35. f. 15; Cope, Proc. Ac. Philad, 1867, p. 204 ; Strauch, Salam. 



p. 65. 



Palatine teeth forming an arched series between choanse, extending 

 to their anterior border, and not beyond their inner border in 

 the lateral direction. Tongue small, (in young) plicae radiating 

 from behind. General proportions as in A. microstomum. Head 

 oval, rather flattened and broad ; canthus rostralis somewhat marked. 

 Skin quite smooth ; no parotoids ; gular fold slight ; fourteen 

 costal grooves. Above light brown, with a series of light spots 

 along upper part of sides ; these are small, and one between each 

 pair of costal folds ; sides and belly yellow. Total length 95 millim. 



Texas. 



16. Amblystoma cingulatum. 



Amblystoma cingulatum, Cope, Proc. Ac. Philad. 1867, p. 205; 

 Strauch, Salam. p. 65. 



Differs from A. microstomum in the shape of the snout, which is 

 narrowed and projects beyond the mandible. Black, the under sur- 

 faces thickly speckled with grey ; a vertical narrow grey line passes 

 between every pair of costal grooves, and meets its fellow on the 

 dorsal line, or bifurcates to meet a similar bifurcation in like manner, 

 embracing an area; these narrow annuli extend nearly as far 

 forwards as the orbits, and surround the tail to its extremity. 

 (Cope.) 



South Carolina. 

 ? a. Uniform blackish. New Orleans. Edw. Uoubleday, Esq. L I\]. 



17. Amblystoma microstomum. (Plate II. fig. 4.) 



Ambystoma porphyriticum, Halloiv. Proc. Ac. Philad. 1856, p. 8 I nee 



Salamandra porphyritica, Green). 

 Amblystoma microstomum, Cope, Pi'oc. Ac. Philad. 1867, p. 206; 



Strauch, Salam. p. 65. 



Palatine teeth forming a slightly angular series, with convexity 

 forwards, entirely between the choanse. Tongue not very large, 

 oval, with a median longitudinal groove, from which the plicae 

 radiate. Head very small, very convex, slightly longer than broad ; 

 snout very short, broad, rounded, without canthus rostralis ; lower 

 jaw projecting a little beyond the border of upper ; eyes moderate. 

 Body cylindrical, much elongate, four and a half times the distance 

 from snout to gular fold. Limbs short, widely separated when laid 



