JAPANESE MOLLUSKS, ANATINACEA. 137 



ted, and showing under the lens a very fine, irregular wrinkling ; 

 standing at an angle to each other of about 100°. Tube rough and 

 sparsely covered with coarse sand and shells, swollen anteriorly, con- 

 tracted behind the valves. Anterior end forming a mass of irregu- 

 larly placed short tubes, among which pebbles, etc., are imbedded, 

 and lacking any trace of a marginal fringe or rosette. Posterior 

 €nd slightly larger than median part of tube, bearing two flounces. 

 Total length 285 mm., diameter of median part of tube 27, diameter 

 of tube at valves 50, diameter of tubule mass 55. Valves, antero- 

 posterior length 27 mm., dorso-ventral 16 mm. 



Found at village of Goshoura, district of Amakusa, coast of Prov. 

 Higo, (Kumamoto Keu) Japan. The original locality was simply 

 Japan. Native name, Teppo-Kai (Gun shell). 



This specimen was procured by Mr. Frederick Stearns at the 

 Third National Exhibition, Tokyo, 1890. It is evidently nearest 

 allied to A. incertmn Chenu (111. Conch., I, pi. 4, f. 5, 6) but differs 

 in the totally diverse shape of the valves, which are triangular and 

 broader than long in that species, oblong and far longer than wide 

 in this. Mr. Sowerby's specimen (see P. Z. S., 1888, p. 290) was 

 larger, length 325 mm., and had 6-7 flounces. The species has not 

 before been figured. 



What Dunker reports as fragments of a gigantic specimen of A. 

 vaginiferum, is probably this species. 



{Anatinaced). 

 LYONSIID.ffi:. 



Lyonsia ventricosa Gld. Otia, p. 162. Lyonsia rostrata Lischke. Jap. M. C, 

 III, p. 102, pi. 9, f. 13. 



Hakodate (Stimp.) ; southern coast of Japan (Lischke). An 

 original specimen of Gould's species before me seems practically 

 identical with that of Lischke. The examples collected by Mr. 

 Stearns are larger than Lischke indicates (length 23 mm.) and 

 more abruptly truncated posteriorly, 



Lyonsia praetenuis Dkr. Index, p. 180, pi. 7, f. 13. 



Wakayama, Inland Sea (Dkr.). 

 Entodesma navicula Ads. & Rve. Zool. Samarang, p. 83, pi. 23, f. 11. 



Kiushiu Is. (Lischke). 

 Entodesma truncatissima n. sp. PI. Ill, figs. 11, 12. 



Shell truncate-oval, very ventricose, thin, light buff, whitish 

 toward the beaks, fragile. Surface with some irregular concentric 



