452 AMPHISBAENID A. 
large, eye more or less distinct ; nostril pierced in the anterior por- 
tion of a small nasal situated in a notch of the rostral; an elongate 
preocular, about the size of the nasal; three upper labials; mental 
quadrangular, followed by a subpentagonal chin-shield of nearly 
equal size ; a larger lateral chin-shield ; three lower labials, third 
small. Two hundred and seventeen or two hundred and twenty- 
four annuli on the body, and twenty or twenty-one on the tail 
(214 to 240420 to 24, Strauch); on the middle of the body an 
annulus comprises thirty-two or thirty-eight segments, sixteen or 
eighteen above, and sixteen to twenty below the lateral lines ; the 
dorsal segments longer than broad, the ventrals rectangular or 
a little broader than long. Lateral line distinct. Six anal seg- 
ments, Four preanal pores. Purplish brown above, whitish in- 
feriorly. 
millim: 
Length to vent: wc. cciwceeee vives. 210 
PALL. sara maha eae a Sone ee 22 
Diameter of body ......... .. 00. 7 
Southern Brazil, Uruguay, Argentine Republic. 
a. Her. (A. 224421). Rio Grande do Sul. Dr. v. Thering [C.]. 
b-f. Ova & feeti. Rio Grandedo Sul. Dr. v. Ihering os. 
g. Yg. (A. 217422). Cosquin, Cordova. E. W. White, Esq. [C.]. 
2. Anops africanus. (Prate XXIII, fig. 4.) 
Baikia africana, Gray, Cat. Sh. Rept. ii. p. 39. 
Baikia africana, Gray, Proc. Zool. Soc. 1865, p. 451, fig. 
Amphishena africana, Strauch, Mél. Biol. de. St. Petersb. xi. p. 421. 
Head separated from the body by a circular fold. Nasal confluent 
with rostral anteriorly (this may be an individual anomaly); two 
shields behind the rostral on each side, forming a short suture, the 
anterior, or prefrontal, narrow, band-like, descending to the second 
labial and the ocular; ocular extremely small, triangular at the 
point of intersection of the prefrontal, the frontal, the temporal, and 
the second and third labials; eye distinguishable, not under the 
ocular, but in the supero-anterior corner of the third labial; upper 
labials three, first very small, second largest ; mental quadrangular, 
followed by an elongate quadrangular chin-shield ; two lower labials, 
first very large, second very small; a large chin-shield on each side, 
behind the first labial. One hundred and forty-eight annuli on the 
body and twenty-five on the tail; an annulus contains thirty-eight 
segments, twenty dorsal and eightcen ventral; latter, two median a 
little broader than long; dorsal segments longer than broad. Lateral 
line distinct. Ten anal segments; four preanal pores, Flesh- 
coloured. 
millim 
Length to vent .......-.....0000. 180 
Pall iis tats Seuss aew ey eres 22 
Diameter of body ................ 5 
a. W., Africa. 
