THE NAUTILUS. 135 



being rougliened like that of a PJectotropis. It is the first Ccelorn& 

 found in Shikoku Island, 



Trishoplita lischkeana var. hizenensis n. var. 



The siiell is transparent-whitish, witli a red-brown band at the" 

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

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

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

 very close, fine, shallow spiral stria;. Whorls A\. 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..S, diam. 8.8 mm. 



Ukujima, Hizen. Tyi'fs "'5. 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. collinsoni var. okinoshimce 

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

 T. c. var. casta (Nautilus XV, 'p. 19), also a larger shell, from 

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

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

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

 hizenensis, 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 lischkeana. 



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

 collinsoni 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 collinsoni 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 castct^ 

 and okinoshiincB. 



Trishoplita tnesogonia var. shikokuensis n. var. 



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

 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 5|. Alt. 7.3, diam. 11 mm. 



