246 CYSTIGNATHID^. 



Skin smooth, or T^'itli small warts above ; a glandular lateral fold 

 from the ej-e to the groin ; sometimes a second below it, from the 

 tj'mpanum to the middle of the side; a ventral discoidal fold. 

 Brown or olive above, with more or less distinct darker markings ; 

 generally an angular dark spot on the occiput ; a dark stripe from 

 the tip of the snout along the canthus rostralis through the eye to 

 the shoulder ; limbs cross-barred ; hinder side of thighs dark brown, 

 with a more or less distinct white stripe ; beneath immaculate, or 

 more or less dotted with brown. Male with two internal vocal sacs ; 

 thumb without spine-like tubercles. 

 W. Indies ; Mexico. 



a-c, d-fj, h-l. c? , $ , & yg. St. Thomas. Mr. Eiise [0.]. (Types.) 



VI. Several spec. : d* , ? , Sta. Cruz, W. Indies, A. Newton, Esq. [P.]. 

 bgr., & yg. 



$. Tehuantepec, Brussels M;isemn[E.]. 



p 



n 



0. c?. 



15. Leptodactylus typhonius. 



Cystignathus gracilis, Giinth. Cat. p. 28. 

 liana tvphonia, Baud, liain. p. '5-5, pi. 17. f. 3, 4, and Rept. viii, 

 p. lOG, pi. 95. 



mystacea, Spix, Test. Ran. p. 27, pi. 0. f. 2, -3 ; Peters, Mon, Berh 



Ac. 1872, p. 201. 



sibilatiix, Wied, Beitr. Natiuy. Bras. i. p. 545, andAhhihL 



Leptodactylus typhonius, Fifzin//. Class. Rept. p. 64. 



sibilatrix, Fitzing. I. v. 



Cystignatlms ocellatus, part., TscJuidi, Bair. p. 78. 



typhonius, Bxmi. &,• Bihr. p. 402 ; Reinh. 8f Liitk. Vidensk. 



Meddel. 1861, p. 164 ; Steindachn. Novara, Amph, p. 24 ; Peters, 



Mon. Berl. Ac. 1876, p. 709. 



schomburgkii, Troscliel, Schonih. Reisen Guiana, iii, p. 659. 



gracilis, Hensel, Wiegm. Arch. 1867, p. 130. 



Tongue oval, nicked behind. Vomerine teeth in two arched series 

 behind the choante. Snout acuminate, prominent, longer than the 

 greatest orbital diameter ; nostril nearer the tip of the snout than 

 the eye ; interorbital space narrower than the upper eyelid ; tym- 

 panum two thirds the width of the eye. Fingers moderate, first 

 much longer than second ; toes moderate, not fringed : subarticular 

 tubercles well developed ; two small metatarsal tubercles, the outer 

 very indistinct. The hind limb being carried forwards along the 

 body, the tibio-tarsal articulation reaches the eye, or somewhat be- 

 yond. Skin with distinct longitudinal folds on the back ; a ventral 

 discoidal fold. Olive above, with dark regular spots ; sometimes a 

 light vertebral stripe ; limbs cross-barred ; hinder side of thighs 

 black-and-white marbled. Male with a black external vocal sac on 

 each side of the throat ; thumb without spiue-bearing tubercles. 



E. S. America. 



a. 2 . St. Marthe. 



h-d. S- Para, R. Graham, Esq. [P.]. 



