1891.] NATURAL SCIENCES OP PHILADELPHIA. 473 



Siphonalia fuscolineata Pse. PJ. XIX, fig. 4. 



This is placed among the " un figured and undetermined " species in 

 Tryon's monograph of the genus. It is allied to S. longirostris Dkr., 

 but has a longer spire and much smaller aperture. 



Two specimens were collected in the Inland Sea of Japan. 

 Astralium Japonicum Dunker. PI. XIX, figs. 6, 7, 8. 



The specimens of this species collected by Mr. Stearns attain 

 dimensions far exceeding those of the original specimens, the largest 

 measuring 160 mm. diam. The operculum shows this species 

 to belong to the section Pachypoma Gray, as that section is restricted 

 in my monograph of Astralium. 1 The operculum is excessively like 

 that of A stralium inequale, the type and hitherto the only known 

 species of the section Pachypoma. 



The specimens were collected on the southeast coast of Province 

 of Kii. 



It is very probable that Astralium Wardii Baker, recently de- 

 scribed, is merely a depressed specimen of A. Japonicum. 

 Vola puncticulata Dunker. PI. XIX, figs. 1, 2, 3. 



The specimen is figured to show the characters of this beautiful 

 species when mature. D linker's original examples, figured in the 

 Ind. Moll. Mar. Jap., pi. xi, figs. 10, 11, being less than half grown. 

 It is perhaps the most beautiful species of Vola, a group remarkable 

 for beauty. 

 Macrochlamys Stearnsii Pilsbry. PL XIX, figs. 9, 10, 11. 



Figures of this species are here given. The description will be 

 found on p. 457 of this volume. 



^Manual of Conchology, X, p. 221, 242, 1888. 



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