GASTROCOPTA, EAST INDIES, POLYNESIA. 153 



91. GASTROCOPTA RECONDITA (Tapperone-Canefri). PL 24, 

 fig. 10. 



Shell very minutely riiuate, ovate-oblong, longitudinally 

 obliquely substriate, thin, glossy, pellucid. Spire cylindric- 

 conic, the apex obtuse. Whorls 5, slightly convex, parted by 

 a deep suture, the last whorl compressed behind the aperture, 

 one-third the total length. Aperture rounded subquadrate, 

 dilated above. Peristome continuous, thin, somewhat re- 

 flected throughout. Apertural lamina 5 or 6: an angular 

 generally joined to the peristome; parietal convex, subim- 

 mersed ; columellar strong; palatals 2 or 3, the lowest smaller, 

 rarely obsolete, the upper a little thickened. Alt. 2%, diam. 

 1% mm. (T.-C.). 



Aru Is.: Wokan (Beccari). Moluccas: Hulaliu, Haruku; 

 Banda (Strubell). 



Pupa recondita TAPPARONE-CANEFRI, Annali del Museo 

 Civico di Storia Naturale di Genova, xix, 1883, p. 106, pi. 2, 

 f. 3, 4. LeucochUus reconditum (Tapp.-Can.) BOETTGER, 

 Bericht iiber die Senckenbergische Naturforschende Ges. in 

 Frankfurt a. M., 1891, p. 270. 



From the description and figure, this seems to be closely 

 related to G. pediculus, but the angular and parietal lamellae 

 appear to be more separated, as in G. moellendorffiana,. 



In comparing with specimens of the original lot from 

 Wokan, Professor Boettger noticed a few differences in those 

 from the Moluccas. In the Aru type, the right twin-lamella 

 of the parietal wall reaches almost to the peristome, but in 

 the Haruku form not so far forward, and the two teeth on the 

 columella seem pushed a little nearer together than in the 

 type. Also the umbilical perforation is a little more distinctly 

 developed. Alt. 2.2, diam. max. 1.25 mm. The Banda ex- 

 amples are distinguished by a less distinctly twinned struc- 

 ture of the parietal lamella, in a front view. 



92. GASTROCOPTA NIOBE (Fulton). PL 24, fig. 15. 



"Shell elongate-oval, rimate, smooth, dirty white; whorls 

 5, convex. Peristome oval, thin, continuous, expanded; in- 

 ternal armature of the aperture consists of five plaits: two 



