LUTRARIA. 



Plate IV. 



Species 13. (Mus. Cuming.) 



LcTRARiA Cumin GiANA. Lutr. tedd elongato-ollongd, 

 tetmicidd, angudd, ciirvatd, Soleniformi ; lateribus 

 cBqualiter rotimdatis, antico valde prolongato, subaperte 

 hiante, postico irevi ,• concentrice dense minute striatd, 

 pelhwido-albd, epidermide tenui cinereo-oUvaced in- 

 dutd. 



Cuming's LXitraria. Shell elongately oblong, rather 

 thin, narrow, curved, Solen-shajjed ; sides equally 

 rounded, the anterior very much prolonged, rather 

 openly gaping, posterior short ; concentrically thickly 

 minutely striated, transparent white, covered with a 

 thin ash-olive epidermis. 



■Deshates, Pro. Zool. Soc. 1854. 

 Zenatia Cmningiana, Gray. 



Hab. New Zealand ; Eai-1. 



A delicate /SoZew-shaped species, much produced ante- 

 riorly, and openly gaping. 



Species 14. (Mus. Cuming.) 



LuTRARiA ACINACES. Liitr. testd subqriadrato-elongatd, 

 valde compressd, Icevigatd vel Uneis incremenfl irregii- 

 lariter notatd, latere antico valde prolongato, latiics- 

 culo, hiante, ad umbones obsolete angiilato-carinato, 

 ambobus cequaliter rotmidatis ; incarnatd, epidermide 

 corned nigricaute-olivaced versus marginein indutd. 



The scymitar Lutraria. Shell somewhat squarely 

 elongated, very compressed, smooth or marked irre- 

 gularly with the lines of growth, anterior side very 

 much prolonged, rather broad, gaping, obsoletely 

 angle-keeled from the umboes, both sides equally 

 rounded; flesh-tinged, covered towards the margins 

 with a horny blackish-olive epidermis. 



QuoY, MS. (Mus. Cuming.) 

 Zenatia acinaces. Gray. 



Hab. New Zealand ; Earl. 



A somewhat broad squarely elongated shell, smooth and 

 very compressed, flesh-tinged, covered towards the margin 

 with a very dark olive epidermis, having somewhat the 

 aspect of a Sanguinolaria. 



Species 15. (Mus. Cuming.) 



Lutraria Sieboldtii. Lutr. testd elongato-ovatd, cur- 

 vatd ; lateribus subacute rotundatis ; oblique rugose 

 concentrice striatd, sordidl alba, epidermide lutescente- 

 olivaced indutd. 



Sieboldt's Lutraria. Shell elongately ovate, curved ; 

 sides rather acutely rounded ; obliquely roughly con- 

 centrically striated, dull white, covered with a yel- 

 lowish-olive epidermis. 



Deshayes, Pro. Zool. Soc. 1854. 



Eab. Vancouver's Island ; Kellett. 



A rather solid shell, of curved concentric growth, the 



lines being somewhat rough and irregular, covered with a 



yeOowish-olive epidermis. 



Species 16. (Mus. Cuming.) 



Lutraria RHYNCHiENA. Lutr. testd elongato-ovaid,. lub- 

 ventricosd, antice rostrato, aperte Jiiante, concentrice 

 rugoso-striatd ; albidd, epidermide corned lutescente- 

 olivaced indutd. 



The beaked Lutraria. Shell elongately ovate, sub- 

 ventricose, beaked anteriorly, openly gaping, concen- 

 trically roughly striated ; whitish, covered with a 

 yellow-ohve horny epidermis. 



Jonas, MS. (Mus. Cuming.) 



Hab. Swan Eiver. 



Peculiarly distinguished by its ventricose growth, and 

 by the beaked openly gaping structure of the anterior end. 



August, 1854. 



