Il6 MOELLENDORFF : LAND SHELLS OF CAROLINE ISLANDS. 



36.— Palaina (Maeropalaina) sealarina (Mouss.). 

 Mouss. in sched. Mlldff., N. Bl., 1897, p. 43.— Kob. et Mlldff., 



ibid., 1898, p. 134. 

 Hah. — Ponape (Mousson, Etscheid, Kubary). 



37.— Palaina (Maeropalaina) xiphidium, M'ldft. 

 N. Bl., 1897, p. 44. — Kob. et Mlldff., ibid., 1898, p. 134. 

 Hah. — Ponape, in the hills (Etscheid, Kubary). 

 These two species belong to my new section Maeropalaina, wiiich 

 I proposed for some elongate and acuminate species like P. j^omatiae- 

 formix, jNIouss. They both have, at the outer and at the columellar 

 margin of the peristome, a wing-like process, which is much larger on 

 the columella. 7^ xiphidiwa is longer and has a more slender spire, 

 ^ whorl more, the whorls are more convex, the ribs more distant, the 

 colour darker, and the excision of the columellar margin deeper. I 

 think, however, that intermediate forms may still be found and that 

 xiphidium will prove to be merely a sub-species o{ sealarina. 

 I am. PUPINIDAE. 

 38.— Pupina diffleilis, O. Semp. 

 P.Z.S., 1864, p. 252. — J. de Conchyl., 1865, xiii, p. 407, t. 12, f. 8. — 

 Pfr., Mon. Pneum., suppl. iii., p. 150. — Kob. et Mlldff., 

 N. Bl., 1897, p. 145. 

 Hah. — Yap (Kubary), Pelew Islands (C. Semper). 



39.— Pupina complanata (Pease). 

 Rerjistoma complanatam, Pease, P.Z.S., i860, p. 440.— Pfr., Mon. 

 Pneum., suppl. ii, p. 98. — Wiegistoma complanata, Marts, 

 et Langkavel, Don. Bism., p. 58. — Pupina (Regisfoma) 

 complanata, Pfr., Pneum., suppl. iii, p. 152. — Pupina 

 {Pupina s. str.) complanata, Kob. et Mlldff., N. Bl., 1897, 



P- 145- 

 Hah. — Ponape (Etscheid, Kubary), Ebon (Pease), laluit (Dr. 



Steinbach), Marshall Isiands. 



I believe that Ponape is the original habitat of this species and 



that it was introduced on the different atolls of the Marshall group 



with cultivated plants (Pandanus or Musa). It is certainly not a 



Registoma ( = Moidiiisia), but a true Pupina of the typical group of 



P. lieraudreni, Vign., the upper " canal " being somewhat obsolete by the 



slight development of the parietal callus. 



40.— Pupina brenehleyi, Smith. 

 P.Z.S., 1891, t. 40, f. 8. (N. Bl. D. M. G., 1892, p. 176). 

 Hah. — Lugunor (Smith). 



