6 PROCEEDINGS OF THE ACADEMY OF [Jan., 



genus is not closely related to Terebra or the subgenus Mazatlania, 

 but seems to belong to the Terebridce. The Japanese species defined 

 above is the type of this group. 



CONIDJB. 

 Conus dormitor n. sp. PI. I, figs. 9, 9a. 



Shell rather narrow and. long, the diameter somewhat more than J 

 the length, the spire elevated, concave-sided, J the length of the shell. 

 The apex is broken off, 11 whorls remaining, the peripheral angle of 

 each projecting above the suture. The last 2J are even at the periphery, 

 but those preceding are nodulose. The concave, steeply sloping 

 upper surface of each whorl is closely and regularly, finely costulate, 

 the riblets arcuate, and decussated by several unequal spiral shallow 

 grooves. The last whorl has almost straight lateral outlines, and is 

 sculptured with closely punctate spiral grooves, very faint near the 

 angle of the whorls, but becoming stronger and closer toward the base. 

 The siphonal fascicle is closely spirally striate, not punctate. The 

 aperture is long, narrow, and of equal width throughout. 



Length 44, diam. 16 mm. ; aperture 34 mm. long. 



Kikai, Osumi, in a deposit probably Pliocene. Types No. 85,950, 

 A. N. S. P., from No. 1,552 of Mr. Hirase's collection. 



This cone is related to C. acutangulus Lam., but is longer than that 

 species. C. aculeiformis Rve. is similar in shape, but differs in sculp- 

 ture. The specimens show no color. 

 Conus kikaiensis n. sp. PI. I, figs. 8, 8a. 



Shell long and narrow, the diameter about one-third the length, 

 the elevated and slightly concave-sided spire one-fourth the length. 

 Whorls remaining 10, nearly flat and steeply sloping, the smooth 

 peripheral angle projecting a little above the suture, the surface above 

 it sculptured with 3 to 5 low, unequal spiral cords, and fine, arcuate 

 growth-lines. Lateral outlines of the last whorl nearly straight. 

 Sculpture of regular, rather strong, narrow spiral grooves, which are 

 somewhat striate across, weaker above. There are 23-25 of these 

 grooves above the convex siphonal fasciole, which is indistinctly finely 

 striate spirally. In some specimens the flat intervals between the 

 grooves are divided in the middle by a smaller groove. 



Length 40-41, diam. 13 mm. 



Kikai, Osumi; fossil in a Pliocene (?) deposit. Types No. 85,948, 

 A. N. S. P., from No. 1,553 of Mr. Hirase's collection. 



This species is not unlike C. dormitor and C. aculeiformis in general 

 shape, but it differs essentially from both in the sculpture of the spire. 



