TI1K NAUTILUS. 135 



being roughened like that of a Plectotropis. It is the first Ccelorus 

 found in Shikoku Island. 



Trishoplita Jischkeana var. hizenensis n. var. 



Tlie shell is transparent-whitish, with a red-brown band at the 

 periphery, which is angular in front, becoming rounded on the latter 

 part. The band ascends above the suture. The surface is glossy,. 

 and under the lens is seen to be very finely striate, and decussate by 

 very close, fine, shallow spiral striae. Whorls 44. The umbilicus 

 is about one-eighth the diameter of the shell. Peristome thin, ex- 

 panded below, hardly so above. 



Alt. 5.8, diam. 9 mm. 



Alt. 5.3, diam. 8.8 mm. 



Ukujiina, Hizen. Types no. 84414. A. N. S. P., from no. 1019 

 of Mr. Hirase's collection. 



This little shell has the red-brown band and decussate surface of 

 the much larger shell I described as T. coUinsoni var. okinoshimcB 

 (Proc. Acad. Nat. Sci., Phila., 1901, p. 547. It is also related to 

 T. c. var. casta (NAUTILUS XV, f p. 19), also a larger shell, from 

 the province Hiuga, in eastern Kyushu ; and to T. tischkeana 

 (Kobelt), from Hagi, Nagato, on the northwestern coast of south- 

 western Hondo (Nippon). T. lischkeana is more elevated than 

 hizenemis, and though compressed, the last whorl is not angular. 

 Otherwise the two forms seem to be alike, so far as we can tell from 

 the published description and figures of Jischkeana. 



One of the present authors, in referring these forms to A. Adams 

 coUinsoni some years ago (NAUT. XV, 19), was influenced by the 

 belief that the locality " Tago " given for that species was situated in 

 western Shikoku but this was an error, Tago being a seaport of the 

 province Izu, on Suruga Gulf; and as coUinsoni is described as a de- 

 cidedly more globose shell than casta, etc., though similarly colored, 

 it will probably prove to be specifically distinct from the forms casta 

 and 



Trishoplita mesogonia var. shikokuensis n. var. 



The shell is similar in form to T. mesogonia (Pils.), but differs in 

 sculpture, being very closely and finely striate spirally. The types 

 are red-brown, fading towards the suture and base, with a pale line 

 at the angular periphery, and more or less streaked with whitish- 

 corneous. Whorls 5i. Alt. 7.3, diam. 11 mm. 



