344 PROCEEDINGS OF THE ACADEMY OF [June, 



NEW LAND MOLLUSCA FROM JAPAN AND THE LOO CHOO ISLANDS. 

 BY HENEY A. FILSBRY. 



The collectors sent out by Mr. Hirase in the early mouths of this 

 year have already transmitted much new and valuable material, 

 in the study of which it is my 2)rivilege to assist. As Mr. Hirase 

 desires to supply such species as have been collected in copious 

 quantity to his correspondents in America and Europe, the prompt 

 publication of full descriptions of the novelties is necessary to 

 avoid the inconvenience attending the publicity of manuscript 

 names. The full report, with figures of the new forms, may best 

 be deferred until the results of the season's collecting can be pre- 

 sented in connected form. Most of the following species are from 

 Kunchan, the northern and least setiled province of the island 

 Okinawa, or Great Luchu (Loo Choo), and from Oshima, hitherto 

 unexplored for land moUusks. 

 Trochomorpha horiomphala (Pfr.). 



Specimens have been sent by Mr. Hirase (No. 631) from Kun- 

 chan, the northern province of Okinawa. They are more depressed 

 than Pfeiffer's type, but there is considerable variation in the 

 species in this respect. Trocliomorpha Fritzei Bttg. is a synonym. 

 No definite locality has been known hitherto for Pfeiffer's species, 

 which, moreover, has been lost, so to speak, in the group Plecto- 

 tropis. Il was doubtless this error of classification which led 

 Boettger to redescribe the shell as T. Fritzei. 

 Trochomorpha Gouldiana n. sp. 



Shell low-conic above, convex beneath, umbilicate, the umbilicus 

 one- fourth the diameter of the shell, broadly open to the apex ; of 

 a dark reddish brown color, glossy ; delicately striate, the strise cut 

 into minute granules by finer, very shallow spiral strise, both 

 above and below. Spire straightly conic, the apex slightly ob- 

 tuse. Whorls 0^, slowly widening, shghtly convex below, and 

 slightly concave above each suture; the last whorl acutely carinate, 

 concave above and below the keel; base convex in the middle, 



