22 PROCEEDINGS OF THE ACADEMY OF [1879. 



Tornatellina Philippi Pfeiffer. 



TomatelUna Philippi, Pfeiffer, Zeitsch. Malak. 1849, p. 93 ; Mon. Hel. 



vol. III. p. 524. 

 Pupa Philippi, Kuster, pi. 18, fig. 20, 21. 

 Leptinaria Philippi, Ad., Gen. Mon. p. 141. 

 Achatina Philippi (Leptinaria), Pfr.,Vers. p. 110. 



There were several examples of this species among Mr. De 

 Gage's shells, which differed none from Tahitian specimens. It 

 also occurs at the Cook's and Marquesas Islands, though not 

 common at any of the above-mentioned locations. 



It may be readily distinguished by its swollen whorls, globose 

 body, large compressed parietal lamina, and somewhat tortuous 

 columella, which in j^oung examples is biplicate. 



Tornatellina simplex, Pease. 



Tornatellina simplex, Pease, Proc. Zool. Soc. 1864, p. 673 Pfeiffer, 

 Mon. Hel. vol. VI. p. 266. 



Not uncommon at Rurutu, and we found it at the Marquesas, 

 Society, and very abundant at the Cook's Islands. 



It agrees precisely with Mr. Pease's description of simplex, 

 except having one more whorl, and all have the usual, though 

 smaller parietal lamina, which he must either have overlooked or 

 omitted to mention. I collected his type specimens at Tahaa, 

 one of the Society Islands, and am positive this is the shell I sent 

 him. At least I do not know of any species without the parietal 

 lamina. Moreover, this is the only umbilicated species he received 

 from me. 



Tornatellina nitida, Pease. 



Tornatellina nitida, Pease, Proc. Zool. Soc. 1860, p. 439 Pfeiffer, Mon. 

 Hel. vol. VI. p. 264. 



This common species inhabits all the islands in southeastern 

 Polynesia, and extends its range through the small islands in cen- 

 tral Polynesia to the Caroline or Marshall's group, where I ob- 

 tained Mr. Pease's type specimens. 



His diagnosis not being very satisfactory, I subjoin the follow- 

 ing description: 



Shell small, imperforate, oblong, or elongate-conic, thin, smooth, 

 shining, transparent, brownish-horn color; spire more or less 

 elongate-conic, with sub-planulate outlines, and obtuse apex; 

 suture well defined, linear ; whorls 5-6, strongly convex, slowlj' 

 and regularly increasing, the last not descending in front, some- 



