13. AMBLYSTOMA. 43 



taking place considerably inside the line of the choanaB ; median 

 series notched behind ; the teeth themselves are in numerous rows 

 on each of their bony crests, presenting a brush-like arrangement. 

 Tongue large, plica3 radiating from behind. Head broad and obtuse, 

 entering the length to the groin 3| times. Body stout and heavy. 

 Limbs stout ; the adpressed limbs overlap by the length of the toes ; 

 fingers and toes not elongate, depressed ; two well-marked plantar 

 tubercles. Tail much compressed, a little shorter than head . and 

 body. Skin smooth ; folds of throat and side of head not strongly 

 marked; eleven costal grooves. Colour above olive-brown, below 

 yellowish, olive-shaded in the middle ; the inferior yellow rises on the 

 sides as short blotches ; above them are several ill-defined yellowish 

 spots ; parotoid region yellow, with a distinct black vertical bar ; 

 limbs brown cross-banded; tail yellow with brown spots. Total 

 length 5 inches 10 lines. 

 New Jersey. 



6. Amblystoma tigrinum. 



Heterotriton ingens, Gray, Cat. p. 33. 

 Xiphonura jeffersoniana, id. ibid. p. 34. 

 Ambystoma tigrinum, id,, ibid. p. 35. 

 Ambystoma mavortium, id. ibid. p. 37. 

 Salamandra tigrina, Green, Journ. Ac. Philad. v. p. 116. 



ingens, Green, I. c. vi. p. 254. 



lurida, Baird, Amer. Journ. xxxvi. p. 322. 



Triton tigrinus, Holbr. N. Amer. Herp. v. p. 79, pi. 26 ; Dehay, N. 



Y. Faun. p. 83, pi. 15. f. 32. 



ingens, Holbr. I. c. p. 85, pi. 29. 



Ambystoma tigrina, Baird, Journ. Ac. Philad. (2) i. p. 284; Dum. fy 



Bibr. p. 108 ; Hallow. Journ. Ac. Philad. (2) iii. p. 350. 



lurida, Baird, I. c. ; Hallow. 1. c. p. 353. 



mavortia, Baird, I. c. pp. 284, 292 ; Hallow. 1. c. p. 352. 



episcopus, Baird, I. c. pp. 284, 293 ; Hallow. 1. c. p. 354. 



Ambyostoma californiense, Gray, Proc. Zool. Soc. 1853, p. 11, pi. 7 ; 



Hallow. I. c. p. 355 ; Baird, Rep. U.S. Expl. Surv. xiii. part iv. 



pi. 30. f. 1-3. 

 Ambystoma fasciatum, var., Dum. 8f Bibr. p. 107, pi. 105. f. 1. 



nebulosum, Hallow. 1. c. p. 352. 



ingens, Hallow. 1. c. p. 353 ; Cooper, U.S. Expl. Surv. xii. part ii. 



pi. 31. f. 2. 

 proserpine, Hallow. 1. c. p. 354 ; U.S. Mex. Bound. Surv. ii., 



Rept. pi. 35. f. 7-14. 

 maculatum, Hallow. 1. c. p. 355, and Proc. Ac. Philad. 1857, 



p. 215. 

 Desmiostoma maculatum, Sager, Penins. Journ. Medic. 1858, p. 428. 

 Oamarataxis maculata, Cope, Proc. Ac. Philad. 1859, p. 122. 

 Amblystoma tigrinum, Cope, Proc. Ac. Philad. 1867, p. 179 ; Strauch, 



Salam. p. 63. 



mexicanum, Cope, I. c. p. 184 ; Strauch, I. c. p. 64. 



mavortium, Cope, I. c ; Strauch, I. c. ; Cope, in Yarrow's Report, 



Zool. p. 631. 



obscurum (Baii'd), Cope, I. c. p. 192 ; Strauch, I. c. 



weismanni, Wiedersh. Zeitschr. iviss. Zool. xxxii. p. 216, pis. 



11, 12. 



