PARTULID^E. 155 



Family PARTULID^E Pilsibry. 



Partulidce PILS., Proc. Acad. Nat. Sci. Phila. 1900, p. 564. 



Orthurethra in which the kidney is triangular, equal to the 

 pericardium in length. Genitalia of the haplogonous type, 

 the penis without an appendix. Shell Buliuioid, with the 

 outer lip expanded or reflexed in known forms; the eolumellar 

 lip reflexed, curving into the basal margin, simple or nodu- 

 lous; parietal wall often dentate, but the aperture never has 

 entering lamellae 



Jaw very thin, formed of many narrow flat plaits, converg- 

 ing downward towards the middle. Radula broad; the cen- 

 tral tooth is not much smaller than the laterals, and has a 

 long middle and small side cusps; lateral teeth with the 

 mesocone long, ectocone well developed, but no entocone; 

 marginal teeth oblique with three cusps directed outward, the 

 inner one largest. 



Distribution entirely insular, confined to high islands of 

 the southern and western Pacific. Nearly all the species are 

 arboreal, living on trees and bushes, but some species of 

 Raiatea, Tahaa, Tahiti and perhaps the Caroline Islands, are 

 terrestrial. 



This family is co-extensive with the following genus. 



Genus PARTULA Ferussac. 



Partula FEE., Tableau Systematique de la Famille des 

 Limagons p. 65, for P. pudica, australis, gibba, fragilis, ota- 

 heitana and auricula. HERRMANNSEN, Indieis Gen. Malac. 

 ii, p. 204, P. faba (P. australis Fer.) selected as type. 

 HARTMAN, Catalogue of the genus Partula Fer., 1881 ; Ob- 

 servations on the genus Partula, etc. Bull. Mus,. Comp. Zool. 

 ix, p. 171; Catalogue of the genus, Proc. A. N. S. Phila., 

 1885, p. 206-223. H. H. SMITH, Annotated Catalogue of 

 shells of the genus Partula in the Hartman collection, be- 

 longing to the Carnegie Museum, Annals of the Carnegie 

 Museum i, p. 422-485, March, 1903. Bibliography of Hart- 

 man's writings on Partula on p. 424. 



Characters those of the family. Type P. faba Martyn. 



