PULMONATA. 



127 



Helix (Trochomorpha) rectangula, Alb. 116. 



Helix hapa, Homhr. 8f Jacq. Voy. Pol Sud, Moll. t. 7- f- 38-41. 



Reeve, n. 615. t. 109. 

 Hab. The Marquesas. 



144. Nanina Salomonis. 



Shell orbiculate, depressed subconic, umbilicated, cancellated ; 

 whorls six, depressedly-eonvex, the last rounded, depressed be- 

 neath, plane ; aperture oblique ; Up sharp ; inner lij) very ob- 

 lique, reflected above, nearly hiding the very small umbilicus. 

 Lat. 18, alt. 13 mill. 

 Helix Salomonis, Le Guillou in Revue Zool. 1842, p. 137- 



Pfr. Mon. i. 47. n. 85. 

 Hab. Salomon Islands. 



145. Nanina doliolum. 



Shell perforated, turbinated, very closely and minutely costu- 

 late-striated, pellucid, not shining, horny ; spire tm-binated, apex 

 rather obtuse ; whorls five, slightly convex, the last nearly level 

 beneath; aperture depressed, widely lunar; peristome quite 

 simple, straight. Lat. maj. 3i, min. Si, alt. 2i mill. 

 Hehx doliolum, Pfr. in Proc. Zool. Soc. 1846, p. 41 ; Mon. Helic. 



i. 50. 

 Hab. Zebu Island. 



146. Nanina concentrica. 



Shell trochiform, subfulvous, pellucid, slightly umbihcated ; 

 whorls five, obsoletely striated transversely (with three remote 

 strize), the last keeledj depressedly-eonvex beneath ; spire conic- 

 depressed; aperture subovate, shghtly angulated in front, mar- 

 gin acute ; umbiUcus very minute, obsolete. Lat. 7, alt. 6 mill. 



Helix concentrica, Le Guillou in Revue Zool. 1842, p. 139. 



Pfr. Mon. Helic. i. 51. 

 Hab. Tonga Island. 



147. Nanina Pacifica. 



Shell perforated, subtrochiform, thin, pellucid, striatulate, 

 horny ; spire conoidal, rather acute ; whorls six to six and a half, 

 slightly convex, the last acutely keeled, a little more convex 

 beneath, smooth, bright ; aperture depressed, angulate-lunar ; 

 peristome simple, acute, eolumellar margin scarcely dilated, in- 

 serted into the punctiform perforation. Lat. maj. 5|, min. 5, 

 alt. 4 mill. 



