On Gasteropoda collected in Japanese Seas. 103 



XII. — A List of the Gasteropoda collected in Japanese Seas by 

 Commander H. C. St. John, B.N. By EDGAR A. Smith, 

 F.Z.S., Zoological Department, British Museum. 



[Continued from vol. xv. p. 427.] 



53. Stylopsis rufo-fasciata, sp. nov. 



Testa subulata, elongata, loevis, nitida, sub epidermide tenui sordide 

 albida alba, fasciis rufis ornata; anfractus circa 12 planiusculi, 

 supremi 5-6 longitudinaliter plicati, omnes tenuissime obsolete 

 spiraliter striati, sutura parum obliqua sejuncti ; apertura ovata, 

 superne acuminata, longitudinis totius \ paulo superans ; colu- 

 mella aliquanto incrassata, rectiuscula, callo tenui labro juncta. 



Long. 17 mill., diam. 5. 



Var. Testa longe gracilior, epidermide flavida induta ; anfr. 9-10. 



Long. 12 mill., diam. 3^. 



Hab. East of Yesso, lat. 42° 52' N., long. 144° 40' E., 48 

 fathoms, sand and mud, temperature 37°-39°. Variety, En- 

 dermo Harbour, lat. 42° 20' N., long. 141° 5' E., 4-7 fathoms, 

 sandy mud. 



There are two reddish bands in the upper whorls, and three 

 in the last, which are distinctly visible within the aperture. 



Mr. A. Adams says that this genus " is most like Syrnola, 

 but wanting the columellar fold." I have never seen a species 

 of this genus ; but the above remark of Adams applies exactly 

 to this and the following species, so that probably they are 

 rightly placed in this group. 



54. Trichotropis (Iphinoe) unicarinata, Sow. Thesaurus 

 Conch, iii. pi. 285. f. 10. 



Hab. Yamada Harbour, 7 fathoms, bottom sand and broken 

 shells. 



The specimens of this rare shell dredged by Capt. St. John 

 are 12 millims. long, and the upper part of the body-whorl 6 

 millinrs. in breadth. They are clothed with a thin horn- 

 coloured epidermis, which is produced from the angle of the 

 whorls in the form of little short spines. 



55. Trichotropis insignis, Middendorff, Malacozool. Rossica, 

 ii. p. 107, pi. x. f. 7, 8, 9 ; Thes. Conch, iii. pi. 285. f. 9. 



Hab. Akishi, 3 to 4 fathoms. 



56. Hydrobia plicosa, sp. nov. 

 Testa ovato-conica, fuscescens, infra suturam pallida : anfractus 6 



