337 



15. Leptopoma immaculatum Chem. 



16. Leptopoma kejong, sp. nov. 



PI. 17, fig. 6. 



Description. — Shell perforate, acutely turbinate, rather thin, translucent, 

 apex acute, obtusely carinate. 



Embryonic whorl glassy with few exceedingly fine raised spiral threads. 

 Color milky white or consisting of axial zigzag streaks of Sayal brown very 

 faint on the early whorls. On body whorl below the periphery the axial 

 color streaks usually become straight and extend into the umbilicus, and in 

 addition are fainter. 



Sculpture consisting of innumerable very minute spiral threads, occasionally 

 become slightly wavy at irregular intervals. Growth fines very fine and 

 less pronounced than the spiral lines. A few examples in the type series have 

 four or five more or less pronounced spiral riblets. 



Whorls 5, convex, suture impressed. 



Aperture rounded, but not holostomatous, reflected, inner lip consisting 

 only of a very faint callous, just thick enough to cover the sculptural character 

 of the body whorl. Columella nearly straight, slightly reflected over the 

 umbilical area. 



Alt. Diam. Ap. Length Ap. Width 



12.5 



•12.5 



7 



6.5 mm 



11.5 



12 



6 



5.5 



11.5 



12.5 



6.5 



5.5 



12 



12.5 



6.5 



6 



11 



11.5 



6.5 



6 



Holotype, M. C. Z. no. 47224 

 Paratype, M. C. Z. no. 47225 



Holotype— M. C. Z. no. 47224. Paratypes— M. C. Z. no. 47225. Lubang 

 Island; Pedro de Mesa, collector, 1929. 



Remarks. — This species is quite specifically distinct from 

 Leptopoma immaculatum Chem. from this same locality. L. 

 immaculatum is much larger and has a more pronounced sculpture 

 both in the development of the spiral threads and riblets. On 

 the Lubang specimens of L. immaculata there is far less tendency 

 to produce the axial color areas. 



17. Cyclophorus reevei Hid. 



18. Cyclophorus reevei lubanicus, var. nov. 



PI. 17, fig. 7. 



Description. — Shell perforate, turbinate, rather thick, with a prominent 

 apex. 



Embryonic whorl white, shading into Vandyke brown on next three whorls. 

 Beginning at second whorl, a series 'of axial Vandyke brown stripes forming a 

 solid band of color on the early whorls and gradually becoming more distinctly 



