P Y R A M I D E L L A . 



Plate II. 



Species 9. (Miis. Cumin;;.) 



PYR.isiiDELLA ciNCTA. Fijr. testd subovaU-acumiiiaf4, 

 alba, anfractibuLS lavibns, zona fused lata distinctd 

 in medio cinctis, aperturd siibpi/riformi, labro simplici, 

 ncuto. 



The belted Pyramidella. Shell rathei- oval, but 

 acuiiiiiiated, wliite, with smooth whorls, girt in the 

 middle with a broad, defined, chestnut band, aperture 

 rather pyriform, outer lip simple, thin. 



Reeve, Pro. Zool. Soc. 18-1.2. Adams, iu Sowerby's 

 Thes. Conch. Obeliscus sp. 6. 



JTab. Island of Tieao, Philippines (in sandy mud, at the 

 depth of seven fathoms) ; Cuming. 



More oval in form than most of the other species. 



Species 10. (JIus. Cuming.) 



1'yramiuella perforata. Pi/r. tedd conicd, brevi, 

 late el prof mule umbilicatd, alba, l/evissimd, aiifracli- 

 biis vi.v rotitndalis, ultimo obtuse anijiihito, lined pal- 

 lidimmd rufd in medio ornalis, sutiird profnudd, aper- 

 turd pand, subquadratd, columelld redd, pUeis tribus, 

 quarnm and mperiore maxima. 



The perforated Pyramidella. Shell conical, short, 

 widely and deeply und)ilicated, white, very smooth, 

 whorls rather flat, the last obtusely angulated, gilt 

 with an extremely pale reddish line, suture deep, 

 aperture small, rather square, cohimelhi straight, with 

 three plaits, the upper one of which is the largest. 



x\. Adams, in Sowerbv's Thes. Conch. Obeliscus sp 19 

 f. 9. 



Hub. St. John's, AVest Indies (on the saudsj ; Dr. Horn- 

 beck. 



Of a widely conical form, and more deeply perforated 

 than other species of the group to which it belongs. 



Species 11. (Mus. Cuming.) 



Pyramidella fastigiim. Fi/r. testa ovuU-subconicd, 

 subvenlricosd, peiforatd, albd, nitidissimd, Irevi, anfrac- 

 tibiis planiiisciilis, ultimo vi.c anguhdo, coUimelld recta, 

 tripUcatd, labro iiitus Urato. 



The pointed-roof Pyramidella. Shell ovatelv sub- 



conical, subvcntricose, perforated, white, very smooth 

 and shining, whorls rather flat, the last scarcely an- 

 gulated, columella straight, with three plaits, outer 

 lip with slightly raised internal ridges. 



A. Adams, in Sowerby's Thes. Conch. Obeliscus sp. 18. 

 f. 8. 



Hub. Loay, Island of Boliol, Philippines (in sandy mud, 

 sixteen fathoms) ; Cuming. 



This wliite shell differs from the preceding in the greater 

 rotundity of the last whorl and the narrowness of the per- 

 foration. 



Species 12. (Fig. a, b, Mus. Cuming.) 



Pyramidella sulcata. Pi/r.testdsubulalo-tnrritd,loii(/i- 

 iudinaliter slriis sinuatis leviler sidcatd, albidd, maculis 

 lon/jitudinalibus crtruleis nebululd, maculis parvis seria- 

 tim pictu, aiifractibus quadrato-subroiundatis, nltimo 

 ventricoso, aperturd ovali, antice subquadratd, et caiia- 

 liculaid, columelld subarcuatd, tripUcatd. 



The grooved Pyramidella. Shell subulately turreted, 

 longitudinally grooved with sinuous strias, rather 

 white, clouded with longitudinal bluish spots and 

 painted with rows of small brown spots, whorls sub- 

 cpiadrately rounded, the last ventricose, aperture oval, 

 suijquadrate and canaliculated at the base, columella 

 rather arched, triplicate. 



A, Adams (Xuttall MS.), in Sowerby's Thes. Conch. 

 Obeliscus sp. 8. 



Hab. Tahiti (coral sand) ; Cuming. 



Species 13. (Fig. a, h, Mus. Cuming.) 



Pyramidella dolabrata. Fyr. testa politd, perforata, 

 ventricosd, conico-turritd, albd, lineis luteis et caslaneis 

 cinctd, aperturd pi/riformi, columelld recurvd, re- 

 pandd, labro tenui, sim.jjlici. 



The axe Pyramidella. Shell polished, perforated, 

 ventricose, coiiically turreted, white, with yellowish 

 and chestnut transverse lines, aperture [lyriform, co- 

 lumella recurved and expanded, outer lip thin, simple. 



LiNN.EUs, Syst. Xat. (Troehus). 

 Pyramidella lerebellum, Brug. 



[lab. Loanda, West Africa ; Dr. Sams. 



This is a rather thick shell, with ventricose whorls. 



October, 1865. 



