70 ON MOLLUSKS OF THE PERCY SLADEN EXPEDITION. [May 26, 



form ; head broader, less than twice as long as broad ; scales on 

 the snout tri- to quinquecarinate, upper labials more numerous 

 (6 or 7 to below centre of eye), scales on the body smaller (84 to 

 88 round the middle of the body), and the dorsals relatively smaller 

 and passing more gradually into the laterals. The hind limb does 

 not reach beyond the ear. Greyish or coppery brown above, with 

 an ill-defined lighter vertebral line, which may be flanked on each 

 side by a series of small blackish, oblique transverse spots ; belly 

 pale golden, gular region bright yellow. 



milliin. millim. 



Total length 172 Fore limb 23 



Head 14 Hind hmb 37 



Width of head 8 Tibia 11 



Body 43 Tail 11^, 



Three female specimens. 



2. POLYCHRUS ACUTIROSTRIS Spix. 



3. LiocEPHALUs cADucus Cope. 



4. Tropidurus spinulosus Cope. 



5. HOPLOCERCUS SPINOSUS Fitz. 



6. Ameiva surinamensis Laur. 



7. Mabuia aurata Schn. 



8. Mabuia frenata Cope. 



Op HID I A. 



9. LlOPHIS ALMADENSIS Wagl. 



10. Apostolepis assimilis Reinh. 



2. Note on some Mollusks of the Family Bidimulidce from 

 Matto Grosso. (Percy Sladen Expedition to Central 

 Brazil.) By Edgar A. Smith, I.S.O., F.Z.S. 



[Received April 25, 1903.] 



Some specimens of BuUmididce, all of which are in perfect 

 condition, have recently been presented to the British Museum 

 by Mrs. Percy Sladen. They were collected at Corumba, Matto 

 Grosso, by Mr. A. Robert, and two of the species are useful as 

 coming from a locality diflerent from that whence the specimens 

 already in the Collection were obtained, and the third is of 

 interest as being new to the Museum. 



BuLiMULUs MONTIVAGUS d'Orbigny. 



Bulimidus montivayus d'Orbigny ; Pilsbry, Man. Conch, ser. 2, 

 vol. xi. p. 90, pi. xi. figs. 29, 30, pi. xiv. figs. 14, 15; vol. xiv. 

 p. 147. 



