126 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



Leptinaria cumingiana (Pfeiffer), Clessen Ed., Nomen. Helic. Viv., 

 1878-1881, p. 336. 



Ochroderma cumingianum (Pfeiffer), Ancey, Journ. de Conchyl., vol. 

 51, no. 2, 1903, p. 102. Cocos Island. 



Ochroderma cumingiana (Pfeiffer), Pilsbry, Man. Conch., ser. 2, vol. 

 18, 1907, p. 327, pi. 47, f^g. 20. [Records repeated.] 



Tornatellina pittieri von Martens, Sitz. Ges. Naturf. Freunde zu Ber- 

 lin, Jahrg. 1898, no. 9, p. 157. "Cocos-Insel bei Costa Rica." 



Kobelt, Nach. Deutsch. Malalc. Ges., Jahrg. 31, 1899, p. 



26. von Martens, Biol. Centrali-Americana, Moll., 1901, p. 



640, pi. 44, fig. 10. von Martens, Sitz. Ges. Naturf. 



Freunde zu Berlin, Jahrg. 1902, no. 3, p. 60. Cocos Island. 



Biolley, Mollusques de L'lsla del Coco. Mus. Nac. de Costa 

 Rica, 1907, p. 15. Cocos Island. 



Leptinaria (Neosubulina) pittieri (von Martens), Dall, Proc. Acad. 

 Nat. Sci. Philadelphia, vol. 52, 1900, p. 96. Cocos Island. 



Ochroder?na pittieri (von Martens), Pilsbry, Man. Conch., ser. 2, vol. 

 18, 1907, p. 328, pi. 47, figs. 15, 16. 



Leptinaria (Neosubulina) martensi Dall, Proc. Acad. Nat. Sci. Phila- 

 delphia, vol. 52, April 16, 1900, p. 97, pi. 8, fig. 10. "Cocos 

 Island, under stones. Heller and Snodgrass." 



Tornatellina ?nartensi (Dall), von Martens, Biol. Centrali-Americana, 

 Moll., 1901, p. 640. Type locality cited. 



Ochrodertna martensi (Dall), Pilsbry, Man. Conch., ser. 2, vol. 18 

 1907, p. 329, pi. 47, figs. 22, 23, 24. Cocos Island. [Previous 

 records cited and nevi^ sect. Ochrodermella formed with mar- 

 tensi as type.] Ancey, Journ. de Conchyl., vol. 51, no. 2, 



1903, p. 102. Cocos Island. 



Many specimens of Ochrodermella are in the collection from Cocos 

 Island. Those obtained by the Hancock Expedition were found among 

 leaves and mosses along the creeks draining into Wafer and Chatham 

 bays. Only sinistral shells were taken at the first locality and only 

 dextral ones at the last, but except for being reversed the specimens 

 seem indistinguishable. The description and figures of cumingiana fit 

 dextral shells from Cocos Island almost exactly; it is therefore practi- 

 cally certain that Cuming's Nicaragua locality record was an error. 



