1885.] NATURAL SCIENCES OF PHILADELPHIA. 205 



Partula glaber, nobis. 



Shell acuminately oblong, dextral, somewhat inflated, trans- 

 lucent, rimate-perforate ; spire more than half the 

 length; whorls 6, slightly convex, smooth, oblique lines 

 obscure, spiral strirc absent, except the spiral fovea on 

 the two apical whorls; a white fillet beneath the suture; 

 aperture widely oval, perpendicular, lip slightly reflected, 

 columella expanded at base, of a pale rose color, stain- 

 ing the umbilicus ; color white, aperture a very pale 

 rose, with the apex dark purple. 



Length 21, diam. 10 mill.; aperture, length 10, diam. 5 mill. 

 Hab.— ? 



Obs. — This pretty species was received amongst other shells as 

 P. turricula Pease, New Hebrides (?), without a voucher. A 

 comparison with the description of turricula disproves its iden- 

 tity with that species. It is very distinct from any Partula with 

 which I am acquainted. 



Synonymic Catalogue of the Genus Partula. 



In the year 1881 I published a catalogue of the genus Partula, 

 Ferussac, in which I proposed several sub-genera. These were sub- 

 sequently withdrawn in consequence of not possessing sufficient 

 distinctive characters. In the present list I have arranged the 

 species in groups, designating each by the name of a well-known 

 species, which, in most instances, typifies its general characters 

 and facies. Hybridization is probably a factor in the variability 

 of some species, which may account for the confusion of their 

 synonymy. Owing to similarity of general appearance, it is often 

 difficult to recognize a species by the diagnosis, when unaided 

 by figures. Since the publication of my Bibliographic Catalogue 

 of Partula, in 1881, I have embraced every opportunity to perfect 

 my list, in which I have been aided by a number of friends. To 

 Capt. Jno. Brazier, C. M. Z. S., and Jas. C. Cox, M. D., C. M. 

 Z. S., I am indebted for correct localities of the species from 

 New Hebrides and Solomon Islands, as well as for examples 

 from several habitats on those groups. To the generosity of 

 Mr. Andrew Garrett, of Huaheine, I am indebted for several new 

 species. When in London in 1883, I was unable to inspect the 

 Cumingian Collection, which was boxed preparatory to its 



