74 MR. G. F. ANGAS ON A NEW LATIAXIS. [Jail. 15, 



gularly longitudinally striated, shining, whitish, tinged with pale 

 straw-colour towards the base, variously painted with irregular more 

 or less undulating longitudinal greyish black stripes or quadrilateral 

 blotches, frequently taking the form of a confused band towards the 

 centre of the whorl ; spire conical, shorter than the aperture ; apex 

 acute ; whorls 5|, rather convex, the last somewhat inflated ; aperture 

 elongately ovate ; peristome simple, thin ; outer lip slightly expanded 

 outwards. 



Diam. 6 lines, alt. 12. 



Hab. Navarro, Costa Rica ; a somewhat smaller and more inflated 

 variety was obtained by Mr. Boucard at Cartago. 



This species somewhat resembles B. iodostylus of Pfeiffer ; but it 

 is generally more inflated, with the outer lip expanded, and wants the 

 violet colouring on the columella characteristic of the latter. 



Abundant on acacia trees. (Mus. Boucard.) 



EXPLANATION OF PLATE V. 



Figs. 1, 2. Latiaxis elegans, p. 74. 

 3, 4. Cyclotus boucardi, p. 73. 

 5-7. Helix boucardi, p. 72. 

 8-10. adela, p. 72. 



Figs. 11,12. Helix eesopm, p. 72. 



13, 14. Bulimus josephus, p. 73. 



15, 16. navarrensis, p. 73. 



17-20. irazuensis, p. 73. 



4. Description of a -new Species of Latiaxis. By George 

 French Angas, C.M.Z.S., F.L.S., &c. 



[Eeceived November 17, 1877.] 

 (Plate V.) 



Latiaxis elegans, n. s. (Plate V. figs. 1, 2.) 



Shell rimate, ovately turreted, solid, white ; length of spire and 

 aperture equal ; whorls 5^, irregularly distantly longitudinally ribbed, 

 flattened and excavated above, with a wide projecting keel, curving 

 upwards and scalloped at the edge, running round the periphery of 

 the whorls, which are encircled by scabrous ridges, fine and close-set 

 above the keel, stouter, wider apart, and more squamate below, one 

 ridge (intermediate between the keel of the body-whorl and the 

 base) being larger and more elevated than the others ; aperture semi- 

 oval ; outer lip sulcate within ; columella nearly straight ; umbilical 

 region bordered by an elevated squamose ridge ; canal very short, 

 slightly twisted and recurved. 



Diam. 1 1 lines, alt. 1 in. 2 lines. 



Hab. Unknown. 



This beautiful species of Latiaxis has been placed in my hands 

 for description by Mr. Robert Geale. 



