462 AMPHISB^NID.E. 



Frontal forming a broad snture witli 

 the rostra] ; first upper labial scarcely 

 larger than the second 14. onycliocejihahim, p. 468. 



B. Frontal very large, covering the occiput. 



Prsefrontals present, narrow, widely 



separated 15. octoster/iim, p. 468. 



No prsefrontals 16. scut ige rum, p. 469. 



1. Lepidosternon microceplialiim. 



Lepidosternon microceplialum, Gray, Cat. Tort. p. 73, 

 and Sh. JRept. ii. p. 39. 

 Leposternon microceplialus, Waql. in Spix, Serp. Bras. p. 70, pi. xxvi. 



tig. 2. 

 Amphisbfena punctata (non Bell), Wied, Abbild. Nat. Bras. 

 Lepidosternon microceplialus, JJ'ar/l. Icon. Descr. Amph. pi. x-\i. fig. 1. 



maxirailiani, 7r iec/m. Arch. f. Nat, 1836, p. 157, pi. iii. fig. 3. 



microcephalum, Dinn. Sf Bibr. v. p. 505; Stratich, Mel. Biol. 



Ac. St. Fetersb. xi. p. 424. 



Prtemaxillary teeth 1 or 2 ; maxillaries 4 — 4 ; mandibulars 5 — 5. 

 Snout with three more or less marked longitudinal grooves; rostral 

 large, but widely separated from the ocular ; a pair of large prae- 

 froutals, forming a suture, separating the rostral from the frontal, 

 which is hexagonal and as broad as long or a little broader than 

 long ; a pair of parietals and a pair of small occipitals ; eye slightly 

 distinct through the good-sized ocular ; a large supraocular, followed 

 by a rather larger upper temporal ; two upper labials, first large, 

 second smaller than and under the ocular ; mental small, four-sided, 

 broader than long, followed by a large median chin-shield ; two 

 lateral chin-shields on each side, in contact with the anterior infra- 

 labial ; two lower labials, first very large, second very small. Two 

 hundred and seventeen to two hundred and sixty-three anuuli on 

 the body, and thirteen to sixteen on the tail ; an annulus on the 

 middle of the body contains forty-six or fortj'-eight segments, 

 twenty-two or twenty-four dorsal aud as many ventral ; the ventral 

 segments a little larger than the dorsals. Pectoral shields numerous, 

 a median pair longest, with two or three elongate ones on each side, 

 the others small. Prseanal segments six, median and outer pairs 

 largest. Lateral, vertebral, and ventral lines distinct. Yellowish 

 in spirits, the dorsal segments with a brown spot in the centre. 



raillim. 



Length to vent 470 



Tail 28 



Diameter of body 20 



Brazil. 



a. Ad. (Annvdi 218-f 13). Eio Janeiro. Mrs. Fry [P.]. 



b. Ad. (A. 234+15). Brazil. 



c. Hgr. (A. 217 + 13). Brazil. 



f/. Hgr. (A. 263 + 16). Brazil. Derby Museimi 



