Occasional Papers of the Museum of Zoology 21 



tamsiana. has spiral rows of punctations instead of solid lines, 

 and the calcareous plate of its operculum is also much heavier 

 and more opaque. H. neworalis Guppy (1866) {-\-H. zonata 

 Guppy. 1868, not Lesson) from Trinidad, also belongs in this 

 group. The radular formulae of H. tamsiana and H. nemoralis 

 are given in another paper (1922) ; teeth of the former are 

 shown in the text figure (fig. 20). 



H. kicneri Pfr. (1849) was originally described without local- 

 ity ; in the Conch. Cab., it was ascribed to Guadeloupe ; and. in 

 1852, to Caracas. From the descriptions and figures, it seems 

 to be a form of the protean H. rhodostoma Gray (1825) from 

 Guadeloupe. In this connection, it may be remarked that there 

 is a group of Caracas Islands off the coast of Cumana (L 10, 

 65). H. crassilahris Philippi (1847) is undoubtedly a Pacific 

 species, probably from Sandwich Island, Xew Hebrides. 



Lucidella (Lindsleya?) venezuelensis, new species 



Twelve specimens from damp leaf -mould in a hollow left by 

 a temporary forest pool, near Cano Minapam, Palma Sola (H, 

 xiii, 20). 



Shell : minute, conic-globose, perforate. Color : whitish horn, 

 tinged with orange towards the apex. Whorls: ^Yi, convex; 

 apical y\ whorl, minutely raised-punctuate ; the remainder with 

 fine, closely-spaced, spiral riblets. which extend on to the base 

 of the shell ; last whorl tapers toward aperture and is free 

 (solute) for a short distance. Aperture: kidney-sliaped, with 

 oblique, almost straight, parietal wall ; upper angle rounded. 

 Peristome ; free, simple, and very slightly expanded. Oper- 

 culum : concentric, with calcareous plate thicker than the liorny 

 one. and markedly concave externally ; spiral nucleus almost 

 central ; horny plate almost flat, so that its edge is markedly 

 separate from the calcareous one. 



