GASTROCOPTA, MASCARENE ISLANDS, ETC. 133 



slightly bipartite tooth, columellar and basal margins each 

 minutely one-toothed. Length iy 2 , diam. maj. % mm. 

 ( Crosse ) . 



Rodriguez: Pointe aux Coraux (A. Desmazures). 



Pupa lienardiana CROSSE, Journ. de Conchyl., xxi, 1873, p. 

 140 ; xxii, 1874, p. 228, pi. 8, f . 4. 



The original figure (copied in fig. 10) is defective, accord- 

 ing to Crosse, by not showing the tooth in the basal lip, nor 

 the bifid shape of the parietal lamella. His descriptions are 

 not consistent as to the number of teeth; it seems from the 

 figure that there are four angulo-parietal, columellar, basal 

 and lower palatal. An upper palatal plica should be looked 

 for. 



In his first description Crosse gave also the locality Mau- 

 ritius (E. Dupont), but later he omitted this, perhaps re- 

 ferring the Mauritius shells to Pupa exigua H. Ad. 



For the present this species may be held distinct from other 

 Mascarene forms by reason of its smaller size, comparable to 

 the Antillean G. pellucida. A specimen from the Morelet col- 

 lection, labeled "P. eudeli Desh., I. Bourbon," and received 

 by him from Deshayes, seems to belong to this species, or near 

 it. It is figured in pi. 23, fig. 9. The teeth are like those of 

 G. microscopica, but the size is noticeably less, length 1.74, 

 diam. 0.7, aperture, length 0.6 mm.; barely 5 whorls. The 

 lip is slightly thickened. 



77a. G. lienardiana eudeli n. subsp. PL 23, fig. 11. 



The shell is ovate-conic, wider than lienardiana, the last 

 whorl and aperture larger. Teeth substantially as in micro- 

 scopica, the angulo-parietal having the shape shown in pi. 24, 

 fig. 7 ; lower palatal strongly developed ; lip somewhat thick- 

 ened within. There is a very low crest behind the outer lip. 

 Length 1.75, diam. 0.9, aperture length 0.65 mm. ; 4% whorls. 



Island of Bourbon. No. 64091 A. N. S., ex coll. Morelet. 



This form was with the shells referred above to lienardiana, 

 with the label P. eudeli Desh., and received by Morelet from 

 Deshayes. It is probably a distinct species, but as I have not 

 seen topotypes of lien-ardiana it may be left in this connec- 

 tion for the present. 



