208 BOYSIDIA. 



2500 feet, mentions that the only perfect specimen found was 

 bleached, but a smaller imperfect one was covered with a 

 brown epidermis. He calls it a very beautiful little shell, 

 which undoubtedly it is" (Gude). 



13. BOYSIDIA KELANTANENSIS Sykes. PL 35, figs. 10, 11, 12. 

 The shell is conic, perforate, chestnut-brown, most minutely 



granulate, and having some widely-spaced lines of growth, 

 composed of nearly 5 strongly convex whorls, the last half of 

 the last whorl straightened, horizontal, angular at the periph- 

 ery, flattened below the angle, the rest of the base convex ; the 

 umbilicus has a spiral furrow within, and there is a depres- 

 sion behind the outer lip, just above the periphery. The 

 aperture is very slightly oblique, squarish with rounded 

 angles. The angular lamella is very low, converging within 

 to and joining the parietal. Parietal lamella short, rather 

 strong. A tubercular infraparietal near the columella. Colu- 

 mellar lamella short, horizontal. Upper and lower palatal 

 plicas strong, a concavity of the wall between them. Basal 

 plica small and short. All of the teeth are densely set with 

 microscopic pointed granules. Peristome thin, well expanded, 

 continuous, and barely free from the preceding whorl above. 

 Alt. 3.2, diam. 2.5 mm. 



Malay Peninsula: Kelantan (Waterstradt). 



Boysidia kelantanense SYKES, Journ. of Malac., ix, 1902, p. 

 61, pi. 3, f. 7. Boysidia kelantanensis Sykes MLLDFF., Nachrbl. 

 D. M. Ges., 1902, p. 139. 



This species is notable for the angular lamella, which con- 

 verges to and joins the parietal, as shown in pi. 35, fig. 10. 



Figures 10, 11 are from one of the original lot. Mr. Sykes 

 figured it as having a small interpalatal plica, no basal and 

 no infraparietal (fig. 12). Probably the basal and infrapari- 

 etal are variable. It is related, though not closely, to G. crossei 

 and its group, and to the Javan B. boettgeri. 



14. BOYSIDIA BOETTGERI Moellendorff. PL 34, figs. 7, 8. 

 Shell narrowly perforate, irregularly conic, rather solid, 



subpellucid, delicately striatulate, opaque, as though frosted, 

 brown. Spire pyramidal, the sides straight, apex obtuse. 



