GASTROCOPTA, EAST INDIES, POLYNESIA. 145 



88. GASTROCOPTA MOELLENDORFFIANA n. sp. PL 24, figs. 8, 12, 

 13. 



The shell is ovate, perforate and rimate, grayish white, 

 slightly transparent, composed of 4y 2 strongly convex whorls. 

 The aperture is rounded, a little longer than wide, obstructed 

 by 7 or 8 teeth. The angular lamella is sigmoid, subparallel 

 to the anterior part of the parietal, a callous deposit between 

 them. The parietal lamella is higher, little curved, and joined 

 by the angular lamella behind the middle. The infraparietal 

 is a well-developed, slightly oblong tubercle. The columellar 

 lamella is horizontal in front, and curves downward within. 

 The lower palatal plica is a strong entering fold. Upper 

 palatal is nearly as long, and is placed obliquely, the inner 

 end approaching the lower palatal. There is a tubercular 

 suprapalatal plica, minute in some examples. The basal fold 

 is nearly transverse to the cavity, and subcolumellar in posi- 

 tion. Palatal callous scarcely noticeable. The peristome is 

 thin, broadly expanded, continuous or nearly continuous 

 across the parietal margin. Length 2, diam. above aperture 

 0.95 mm. 



Philippines (J. B. Steere) ; Sierra Bullones, Bohol (Qua- 

 dras). 



By the downwardly turned columellar lamella and strongly 

 developed parietal armature this species is related to Japa- 

 nese forms. The teeth are quite unlike any species described 

 from the Philippine or more southern islands, with the excep- 

 tion of G. hedleyi, in which the downward extension of the 

 columellar lamella is much more developed, and the upper 

 palatal plica less oblique. 



89. GASTROCOPTA PEDICULUS (Shuttleworth). PL 25, figs. 1-3, 

 5-8, 12-15. 



Shell minute, ovate-oblong, thin, slightly striatulate, pellu- 

 cid, hyaline. Spire obtuse ; whorls 6, convex, the last slightly 

 compressed at the base; suture deep. Aperture rounded- 

 subauriform, 5-plicate : angular fold strong, flexuous, im- 

 mersed and somewhat emarginate in front ; one rather strong 

 columellar; three immersed palatals, the middle one stronger. 



