80 MR. A. ADAMS ON THE JAPANESE SPECIES OF LEIOSTKACA. 



18. Leiostraca metulina, a. Ad. 



L. testa recta, subulata, in medio tumidula, solidula, laetea, opaca, me- 

 tiformi ; aufiactibus normalibus planis, suturis profundis, anfractu 

 ultimo elongato ; apertura quadrato-ovata ; labio arcuato. 



Hab. Seto-Uchi (Akasi). 



A neatly-formed, solid, opaque, milk-white species. 



19. Leiostraca pistillum, A. Ad. 



L. testa recta, vix rimata, clavato-subulata, teretiuscula, ad basin tumida, 

 tenui, albida, opaca ; anfractibus normalibus planiusculis, suturis im- 

 pressis, anfractu ultimo ad basin rotundato, gibboso ; apertura subqua- 

 drata, antice valde dilatata ; labro margine flexuoso, in medio i)ro- 

 ducto. 

 Hah. Seto-Uchi (Harima-Nada). 



A pistilliform or club-shaped species, with the base gibbous and the mar- 

 gin of the outer lip flexuous. 



20. Leiostraca crystallina, A. Ad. 



L. testa subulato-ovata, vitrea, pellucida, tenuicula, vertice violaceo tinc- 

 ta ; anfractibus normalibus convexiusculis, suturis anguste marginatis, 

 anfractu ultimo amplo, in medio tumidulo ; apertura oblonga, autice 

 dilatata. 



Hab. Yobuko. 



This species is most like L. tantilla in form, but is pellucid and vitreous, 

 with the apex tinged violet. 



21. Leiostraca pusilla, A. Ad. 



L. testa parva, subulata, recta, pallide succinea, nitida, pellucida ; anfrac- 

 tibus normalibus planis, suturis obsoletis, anfractu ultimo magno, 

 elongato ; apertura oblonga, obliqua, angusta, antice producta et 

 dilatata, 



Hab. Seto-Uchi (Mososeki). 



A small, subulate, transparent, pale amber -coloured species, with an elon- 

 gate aperture produced in front. 



22. Leiostraca pygm^a, A. Ad. 



L. testa parva, subulata, vitrea, pellucida, in medio tumidula, suturis an- 

 guste marginatis ; anfractibus normalibus convexiusculis, ultimo mag- 

 no ; apertura elongata, antice producta, postice angusta, labro margine 

 subdilatato. 



Hab. Seto-Uchi (Mososeki). 



A very small, pellucid species, with the last whorl large, and produced 

 anteriorly. 



23. Leiostraca pusio, A. Ad. 



L. testa subulata, antrorsum subarcuata, gracili, semidiaphana, pallide 

 cornea; anfractibus normalibus convexiusculis, suturis marginatis, 

 anfractu ultimo elongato ; apertura acuminato-ovata. 



Hab. Yobuko. 



