236 MR. A. ADAMS ON JAPANESE OBELlSClNiE. [NoV. 11, 



3. Styloptygma lendiXj a. Ad. 



S. testa elongata, pupiformi, in medio fumida, tenui, semiopaca, 



lactea, polita, niiida ; avfractibus normalihus 7, planis, i?itus 



transversim liratis, ohnolete longitudinaliter striatis ; aperlura 



ovata, antice dilatata et eversa ; pjlica parietdli ohliijua, valida. 



Hub. Yobuko. 



A polished white larviform species, with the transverse internal 

 grooves visible through the semiopaque substance of the whorls. 



4. Styloptygma gibbum, A. Ad. 



5. testa elongato- ovata, brevicula, pupiformi, utrinque constricta, 

 solidiuscula, vitrea, Jcevi, semipellucida, alba; anfractihus nor- 

 malihus 5, suhconvexis, penultimo gibboso ; apertura obliqua, 

 semiovata ; plica parietali parva, obliqua. 



Hah. 0-Sima; Tanabe. 



This is a very peculiar smooth vitreous species, with the penulti- 

 mate whorl gibbous : it is pellucid only when in a fresh condition ; 

 dead or worn specimens are opaque and dull. 



5. Styloptygma cereum, A. Ad. 



5. testa elongata, pupiformi, in medio tumida, solidiuscula, cerea ; 

 anfractihus normalihus Q, planatis, suturis obliquis impressis ; 

 apertura elongato-ovali, antice dilatata ; lahio calloso, incras- 

 sato ; plica 'parietali obliqua, inconspicua. 



Hab. Takano-Sima. 



A wax-like pupoid species, with the inner lip thickened and cal- 

 lous, and the parietal plica obsolete. 



6. Styloptygma larvula, A. Ad. 



S. testa gracili, teretiuscula, in medio tumidula, solida, opaca, laC' 

 tea, polita ; anfractihus normalihus 8, planis, stituris itnjjressis ; 

 apertura parva, ovata ; plica parietali valida, transversa ; labro 

 intus lirato. 

 Hab. 0-Sima. 



A solid, milk-white, polished species, with transverse internal lirse 

 showing through the substance of the whorls. Its specific name is 

 derived from iis somewhat resembling a meal-worm. 



7. Styloptygma subuliforme, A. Ad. 



S. testa acicidato-subulata, alba, tenui. Ion gitudinaliter sub striata ; 

 anfractihus normalihus 11, planis, ad suturas concinne crenu- 

 latis; sutui'is obliquis, valde itnjjressis ; apertura subquadraf a ; 

 lahio plica parva, obliqua ; labro dilatato, margine flexuoso. 

 Hab. Tsu-Sima, 30 fathoms. 



A subulate slender species, more nearly approaching the type- 

 species than any other ; the whorls jire crenulated at the sutures, 

 and the outer lip is dilated and flexuous at the margin. 



