1901.] NATURAL SCIENCES OF PHILADELPHIA. 403 



Ogasawara (Bonin) Islands (Mr. Y. Hirase). Types No. 

 80,812 Coll. A. N. S., from 4676 of Mr. Hirase's collection. 



As yet we know nothing of the distribution of species on the 

 several islands of this little group, the investigation of which will 

 be of the greatest interest. We look to Mr. Hirase to throw light 

 upon it. 



Trishoplita dacostae var. awajiensis nov. 



Shell depressed -conoid, thin, hardly glossy, corneous with a 

 faint brown tint, often in streaks, paler or a little whitish below 

 the sutures. Spires somewhat elevated; whorls 5f, the last 

 obtusely subangular in front. Sculpture of slight, rather irregular 

 growth-stride, a strong lens showing some almost obsolete spiral striae 

 near the umbilicus. Aperture oblique, short-oval, almost round, 

 a little excised by the parietal wall. Peristome thin, narrowly 

 expanded and subreflexed. Alt. 6.2, diam. 9 mrn. ; width of 

 umbilicus about 1 mm. 



Anaya, Awaji Island (Mr. Y. Hirase, No. 645). 



This form is duller, more conoidal, with the last whorl more 

 depressed than T. goodwini var. kyotoensis. It is smaller than 

 T. dacostce, with the aperture less rounded. It is the first Tris- 

 hoplita known from Awaji Island. 

 Trishoplita goodwini var. strigata nov. 



Shell similar in general characters to T. goodwini, but rather 

 faintly streaked obliquely with brown on a whitish corneous 

 ground, usually whitish below the suture. Finely obliquely 

 striate, and densely decussate by close spirals. Whorls 5J to 6. 

 Alt. 9J, diam. 13, width of umbilicus 1J mm. 



Hirado, Hizen, in western Kiusiu (Mr. Y. Hirase). Type, 

 No. 78,844 Coll. A. N. S. P., No. 344 of Mr. Hirase's collection. 



This form was recognized as somewhat different from the typical T. 

 goodivini of Hondo, when received from Mr. Hirase about a year 

 ago; but I did not then think it desirable to distinguish it by 

 name. Since such forms of goodwini as tosana and dacostce have 

 been so distinguished, it would seem advisable to recognize this 

 also. Upon the whole, it is well to have names for these sub- 

 species, which have become differentiated in various areas of the 

 empire. T. goodwini var. strigata differs from tosana and dacostce. 

 by its decussate surface. 



