220 HELICINA §.26. 



219. H. troclilea CSoiild. 



T. minuta, conoidea, tenuiuscula, striata et spiraliter lirata, 

 lutescens, superne albido-maculata; spira acute conoidea; su- 

 tura canaliculata ; anfr. 4 subplanati, ultinms superne liris 3 — 4 

 compressis munitus , periphcria acute bicarinatus , basi con- 

 vexior, laevigatus, medio callo tenui, albido obductus; aper- 

 tura parum obliqua, subtriangularis ; perist. tenue, margine 

 basali reflexiusculo , cum columella brevi angulum subrectum 

 formante. — Operc. ? -- Diam. maj. 3, min. 22/3, alt. 2 mill. 

 (Mus. Cuming) 



Helicina trochlea Gould Exped. Sh. t. 7. f. 109. 



— — Pfr. Mon. Pneum. p. 404. n. 148. Malak. Bl. 1857. 



p. 37. 



— — Gray Cat. Phan. p. 295. 



— — (Pachystoma) //. et ^. Adams Gen. II. p. 303. 

 Habitat Aurora Island. (Spec. Gouldiana typica.) 



V. Schasicheila Shuttleworth. 



Operculum tenui-testaceum , semicirculare , planiusculum, 

 extus costa externe intramarginali elevata circumdatum, mar- 

 gine columellari stricto, intus lamella paululum producta in- 

 crassato et subsulcato, utrinque, sed praesertim inferne in 

 apiculum producto, margine externo rotundato, acuto. — Testa 

 heliciformis, epidermide pilosa partim obducta, basi impressa; 

 apertura semicircularis; perist. subcontinuum , margine dextro 

 juxta insertionem profunde inciso, infra incisionem alatim di- 

 "latato. 



Schasicheila * ) Shuttl. in Bern. Mittheil. 1852. Dec. p. 301. Diagn. n. 

 MoU. Nr. 3. p. 41, 



— Pfr. in Malak. Bl. I. 1854. p. 104. 



— //. et A. Adams Gen. rec. Moll. II. p. 306 : genus He- 



licinidarum. 

 Helicinae spec. Menhe, Pfr., Morelct, Gray. 



1. Sch. IVicoleti Sliiittlewortli. 



T. depresse globoso-conica, tenuis , striatula, lineis spira- 

 libus epidermide fusca soluta hispidulis circumdata, albida, 



*) ^;(daii, incisio ; /nXoc, labrum. 



