TUERITELLA.— Plate VI. 



The characters by which this species diiFers from 

 T. baciUum are apparently of trivial importance, but they 

 are constant in several specimens that have come under 

 mv observation. The whorls are more swollen round the 

 lower part, and the keels are finer, more numerous, and 

 not distinguished by any dai-ker colouring. 



Species 26. (Mus. Cuming.) 



TuRRiTELL.i CROCEA. TuTT. testd pyramtdali-turrM, 

 mUdiuiculd, anfraetibm viginti aut pluribm, convexu- 

 planulatis,spiraUter guingtte- ad decem-carinatis, carinis 

 mbtilibus, inaquidistantibiis ; croceo-brummi, aufrac- 

 tuuni parte snperiori saturatiore, snturis pallidioribm. 



The saffkon-tinged Tuueitella. Shell pyramidally 

 turreted, rather solid, whorls twenty or more in 

 number, convexly flattened, spirally five to ten- 

 keeled, keels fine, inequidistant ; saffron-brown, upper 

 part of the whorls darker, sutures paler. 



K.IENER, Icon. coq. viv. p. 2i. pi. 11. f. 2. 



Hab. China. 



The flattened surface of the whorls and light colouring 

 of the sutures constitute the characteristic featui-es of this 

 species. The spiral keels are unusually numerous, but 

 the alternate ones are sometimes oidy faintly developed, 

 leaving five only of a prominent character. 



Species 27. (Mus. Belcher.) 



Tueritella sanguine a. Turr. testd ■fubelongato-turriU't, 

 anfractibim octodedm ad viginti, coHvexis, spiraliter 

 impresso-stilcatis, sulcis irregularihus, liris itUermediis 



plmiiuscuUs ; fiiho-albicaiite, liris macidis saiiguineis 

 fransversis, oblongo-quadratia, profuse pictis. 

 The blood-stained Turritella. Shell somewhat 

 elongately turreted, whorls eighteen to twenty in 

 number, convex, spiraUy impressly grooved, gi'ooves 

 irregular, intermediate ridges rather flattened ; fulvous 

 wliite, ridges profusely painted with transverse ob- 

 long-square blood-stained spots. 

 Hab. California. 



A very characteristic species in which the entire surface 

 is closely painted with transverse oblong-square dull blood- 

 stained spots. 



Species 28. (Mus. Cuming.) 



Turritella gemmata. Tun: testd pyramidali-tiirritd, 

 crassiusculd,ad basin angulatd, anfractibus ad quindecim, 

 supertie bicostatis, medio concavis, infertii unicostaiis, 

 costis superioribus granatis, inferiori l^evi ; albd, ri'fes- 

 cente-fusco hie illic pallide tinctd. 

 The gemmed Tdreitella. Shell pyi-amidally luireted, 

 rather thick, angled at the base, whorls about fifteen 

 in number, encircled with two granulated ribs round 

 the upper part, and one smooth one round the loner, 

 concave in the middle; white, faintl\- stained here 

 and there with light orange brown. 



IJab. ? 



The structure of this species approaches somewhat in 

 pattern to that of the T. radida, though it wiU be found 

 to dift'er on comparison in the lower spiral rib being smooth 

 except on the last whorl. The species differ materially in 

 form, the T. gemmata being shorter and composed of much 

 fewer whorls. 



