246 CYSTIGNATHIDA. 
Skin smooth, or with small warts above; a glandular lateral fold 
from the eye to the groin ; sometimes a second below it, from the 
tympanum 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-g,h-l. 8,2,& yg. St. Thomas. Mr. Riise [C. ].(Types.) 
m. Several spec.: ¢,2, Sta. Cruz, W. Indies, A. Newton, Esq. [P.]. 
her., & yg. 
n. 2. Tehuantepec. Brussels Museum [E. ]. 
0 S. P 
15. Leptodactylus typhonius. 
Cystignathus gracilis, Giinth, Cat. p. 28. 
Rana typhonia, Daud. Rain. p. 55, pl. 17. £.5, 4, and Rept. viii, 
p- 106, pl. 95. 
—— mystacea, Spir, Test. Ran. p. 27, pl. 5. f.2,3; Peters, Mon, Berl. 
Ac. 1872, p. 201. 
sibilatrix, Wied, Beitr. Naturg. Bras. i. p. 545, and Abbild. 
Leptodactylus typhonius, 2vtzing. Class. Rept. p. 64, 
sibilatrix, Fiteing. 1. ¢. 
Cystignathus ocellatus, part., Zschudi, Batr. p. 78. 
typhonius, Dum. § Bibr. p. 402; Reinh. §& Liith. Vidensh. 
Meddel. 1861, p. 164; Steindachn. Novara, Amph. p. 24; P2ters, 
Mon. Berl. Ac. 1876, p. 709. 
schomburekii, Troschel, Schomb. Reisen Guiana, iii. p. 659, 
eracilis, Hensel, Wiegm. Arch, 1867, p. 180. 
Tongue oval, nicked behind. Vomerine teeth in two arched series 
behind the choanze. Snout acuminate, prominent, longer than the 
ereatest 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 spine-bearing tubercles. 
Ei. 8. America. 
rae St. Marthe. 
b-d. S. Para, R, Graham, Esq. [P.}. 
