3. A3II>niSB.T£NA. 4. ANOPS. 451 



Head rather compressed, snout rounded, very prominent, llostral 

 large, forming a broad suture with the prtefrontals ; nasal small, on 

 the side of the rostral (iu the two specimens in the Collection, 

 this plate has fused with the rostral, but this should be considered 

 rather as anomalous, since four other specimens examined hy Strauch 

 are said to have the nasal completely separated from the rostral); 

 a pair of large praefrontals, followed by a pair of smaller frontals 

 forming together a heart-shaped figure; eye not distinct through the 

 ocular : three upper labials, anterior smallest ; mental subquadran- 

 gular, followed by a pentagonal chin- shield ; three lower labials, 

 anterior very small, second largest ; a large chin-shield on each side, 

 behind the second labial. Two hundred and twenty-two or two 

 hundred and twenty-six annuli on the body, and sixteen or seven- 

 teen on the tail; on the middle of the body an annulus contains 

 thirty-eight segments, twenty above and eighteen below the lateral 

 lines ; the dorsal segments longer than broad, the two median 

 ventrals a little broader than long. Lateral lines distinct. Anal 

 segments eight or ten ; praeanal pores four. Brownish white, each 

 dorsal segment with a small central brown spot. 



millim. 



Length to vent 2(J0 



Tail 19 



Diameter of body 10 



Northern Brazil. 



a. Ad. (Ami. 2224-17). Santai-em. H.W. Bates, Esq.[C.]. (Type.) 



b. Ad. (A. 226-}- 16). River Ciiparia. 



4. ANOPS. 



AnoY>s, Bell, Proc. Zool. Soc. 1883, p. 99; Grmj, Cat. Tort. 1844, 



p. 72, and Proc. Zuol. Soc. 1865, p. 450. 

 Amphisbfena, part., Dum. ^- Bihr. v. p. 470. 

 Baikia, Gray, Proc. Zool. Soc. 1865, p. 450. 



Head strongly compressed, the rostral shield enormous, forming 

 an arch with cutting-edge ; nasals small, lateral. No enlarged 

 pectoral segments. Pra^anal pores. Tail cylindrical, obtuse. 



South-eastern South America, ^Vest Africa. 



1. Anops kingii. 



Anops Idngii, Gray, Cat. Tort. p. 72, and Sh. Rept. ii. p. .38. 

 Anops kingii, Bell, I. c. 1833, p. 99, and Zool. Journ. v. 1834, p. 391, 



pi. xvi. tig. 1. 

 Aiapliisbtuna kingii, Dum. ^- Bihr. v. p. 476; Ilcnsel, Arch. f. Nat. 



1868, p. 343 ; Strauch, Mel. Biol. Ac. St. Petersb. xi. p. 418. 



Head-shields rather variable ; rostral reaching the vertical of the 

 anterior angle or of the centre of the ocular : latter moderately 



2g2 



