1. SIEEN. 2. PSBTTDOBEANCHUS. 87 



1. Siren lacertiaa. 



Siren laceitina, Oray, Cat. p. 68. 

 Siren intermedia, id. ibid. p. 69. 

 Siren lacertina, Linn. I. c. ; Cuv. in Sumb. Obs. Zool. i. p. 28, pi. 11- 

 14 ; Baud. Bept. viii. p. 272, pi. 49. f. 2 ; Holbr. N. Amer. Het-p. 

 V. p. 101, pi. 34 ; Tsclmdi, I. c. ; Bum. ^ Bih: p. 193 (part.). 

 Phanerobranchus dipus, Leuchart, I. c. 

 I Siren intermedia, Leconte, Ann. Lye. N. Y. 1828, p. 133, pi. 1; Holbr. 

 I. e. p. 107, pi. 35. 



Body elongate, eel-like. Head rather small ; snout short, broad ; 

 nostrils in the upper Hp ; eyes very small ; labial lobes much deve- 

 loped. Limbs short ; fingers well developed, pointed. Tail shorter 

 than body, strongly compressed, finned, ending in a point. Skin 

 smooth. Blackish, uniform or with small white dots. 



Total length 670 millim. 



From snout to cloaca 460 „ 



Head (to spiracle) 52 „ 



Width of head 35 „ 



Limb 38 „ 



Tail 210 „ 



S.E. United States. 



a. Adult. N. America. Dr. Garden [P.]. 



b. Adult. N. America. Lord Ampthill [P.]. 

 c-e. Young. S. Carolina. Zool. Soc. 



/. Hgr. Texas. 

 g. Young. ? 



2. PSEUDOBRANCHUS. 

 Pseudobranchus, Gi-ay, Ann. Phil. 1825, p. 216, and Cat. p. 69. 



Tongue covering the fioor of the mouth, free in front. Jaws with 

 a horny sheath. Vomerine teeth numerous, forming two large 

 patches converging apteriorly. Spiraculum single on each side, 

 below the gUIs. Limbs two, posterior absent ; fingers three. 



North America. 



1. Pseudobranchus striatus *, 



Pseudobranchus striatus, Oray, Cat. p. 69. 

 Siren striata, Leconte, Ann. Lye. N. Y. 1824, p. 52, pi. 4 ; Tschvdi, 



5afr. p. 98; Holbr. N. Amer. Herp. v. p. 109, pi. 36; Bum.'^ 



£ibr. pi. 96. f. 1. 

 Pseudobranchus striatus, Oray, Ann. Phil. 1825, p. 216. 



Body elongate, eel-like. Head rather small ; snout short, narrowed ; 

 eyes small ; labial lobes much developed. Limbs very short ; fingers 

 well developed, pointed. Tail shorter than body, compressed, finned, 



* Described from two specimens in the Paris Museum. 



