448 DR. J. E. GRAY ON THE AMPHISBEZNIANS. [May 23, 
4. AMPHISBZNA VERMICULARIS, Dum. et Bibr. Erp. Gén. v.489; 
Gray, J. c. 71. 
Hab. Brazil (Dr. Gardner, B. M.; Mus. Paris); Porto Bello 
(Capt. Austin, R.N., B. M.: head in a very bad state). 
5. AMPHISBENA ?DARWINI, Dum. et Bib. Erp. Gén. v. 491; 
Gray, J. ¢. 71. 
Hab. Monte Video (Mr. Darwin; Mus. Paris). 
6. AMPHISBENA ?VIOLACEA, Peters, Berlin Monatsb. 1854, 
p- 620; Wiegmann, Arch. 1855, p. 49. 
Hab. East Africa, Inhambane (Peters). 
This species is unknown to me; it is without a single frontal 
shield, and has four preanal pores and visible eyes. 
Cynisca, Gray, Cat. Tort., &c., B. M. 71, 1844. 
Head flat, narrow; nose conical, four-sided, rounded at the end ; 
rostral triangular ; nasal plates very large, soldered together, cover- 
ing the front of the head ; crown with a small frontal and a pair of 
parietal shields ; eyes distinct ; temples and occiput with large shields. 
Body very slender; lateral line distinct. Tail cylindrical, elongate, 
truncated ; preanal pores numerous. 
Cynisca LEUCURA, Gray, J. e. 71. 
Amphisbena leueura, Dum. et Bibr. Erp. Gén. v. 498. 
A. macrura, Schlegel, Mus. Leyden. 
Brown ; end of tail white. 
Hab. Guinea (Mus. Leyden) (not Guiana, as stated by mistake in 
the Catalogue). 
b. Nasal shields small, separate above, on the side of a large swollen 
rostral shield. 
Brontia. 
Head ovate, rather convex ; rostral shield very large, hemisphe- 
rical, with the small nasal shields inserted in notches on its hinder 
edge, which is placed over the front labial; crown convex, rounded 
on the side, covered with two pairs of shields ; the front pair square, 
the hinder smaller, triangular, with a small triangular occipital shield 
on its outer side; eye-shield triangular; labial shields =, the 
second upper and front lower large ; gular shield single, square, with 
across series of shields behind it. Body cylindrical; lateral line 
well marked; the dorsal shields elongate, narrow ; the ventral ones 
rather broader, smooth ; preanal pores four ; the preanal shields six or 
eight, the central pair largest, the lateral ones very small. Tail blunt. 
BRONIA BRASILIANA. 
Pale brown; dorsal shields with a dark central spot. 
Hab. Tropical America; Santarem, on the Amazons (Baées, B.M.). 
