PLEUROTOMA. 



Plate XXII. 



(Figures magnified.) 



Species 186. (Mus. Cuming.) 



Pleueotoma violacea. Pleur. testa pyramidali, acumi- 

 nata, anfractibus inulticariuafis, carinis duabus eminen- 

 tioribus, interstitiis minutissime et creberrime striatis ; 

 columella, biplicatd ; canali brevi ; sinu lato, inter ca- 

 rinas eminentiores ; violaceo-fuscescente. 



The violet Pleurotoma. Shell pyramidal, acuminated, 

 whorls many-keeled, two of the keels more conspicu- 

 ous than the rest, interstices very minutely and closely 

 striated ; columella two-plaited ; canal short ; sinus 

 broad, between the two more conspicuous keels ; violet 

 brown. 



Hixds, Molhisca Voy. Sulphur, p. 16. pi. 5. f. 8. 



Hub. North coast of New Guinea and Straits of Macassar 

 (in sandy mud from seven to twenty-two fathoms) ; 

 Hinds. Philippine Islands (in sandy mud from four 

 to seven fathoms) ; Cuming. 



The form of this species is somewhat variable, some ex- 

 amples being more elongated than others. 



Species 187. (Mus. Belcher.) 



Pleueotoma debilis. Pleur. testa fusiformi, gnu-Hi, 

 acuminata, anfractibus transversim striatis, lonyitudi- 

 naliter cosiellatis, costellis approximatis, suturam in- 

 currentibus ; canali mediocri ; lutescente. 



The faint Pleueotoma. Shell fusiform, slender, acu- 

 minated, whorls transversely striated, longitudinally 

 ribbed, ribs small approximated, running into the su- 

 tures ; canal middling ; yellowish. 

 Clavalula debilis, Hinds, Moll. Voy. Sulphur, p. 17. 

 pi. 5. f. 16. 



Hab. New Guinea, Straits of Macassar; Hinds. 



A slender species in which the whorls have not that 

 sutural depression round the upper part common to most 

 species of the genus. 



Species 188. (Mus. Belcher.) 



Pleueotoma eeicea. Pleur. testa fusiformi, acuminata, 

 anfractibus rotundalis, loityitudiua/i/er costellatis, cos- 

 tellis yranosis, lineis elevatis decussatis, suturam incur- 

 rentibus ; canali brevissimo ; pallid e fuscescente. 



The sharp-pointed Pleurotoma. Shell fusiform, acu- 



minated, ribs rounded, longitudinally ribbed, ribs 

 small, granose, crossed with raised Lines, running into 

 the suture; canal very short ; pale brown. 

 Clavatula ericea, Hinds, Moll. Voy. Sulphur, p. 17. 

 pi. 5. f. 15. 

 Hab. Magnetic Island, Coast of Veragua (dredged from 

 mud at the depth of twenty-six fathoms) ; Cuming. 

 The sculpture of this species is of a larger and bolder 

 character than that of the preceding. 



Species 1S9. (Mus. Belcher.) 



Pleueotoma nitens. Pleur. testa clavatd, subexcentricd, 



anfractibus superne anyulatis, lonyitudinaliter subobli- 

 que costatis, cost is prom.inentibus, acutis, ad angulum 

 mucronatis, suturam iucurrentibus ; canali brevi ; sinu 

 amplo ; fused, nitente. 



The shining Pleueotoma. Shell clavate, a little dis- 

 torted, whorls angulated at the upper part, longitu- 

 dinally somewhat obliquely ribbed, ribs prominent, 

 sharp, pointed at the angle, running into the suture ; 

 canal short ; sinus large ; brown, shining. 

 Clavatula nitens, Hinds, Moll. Voy. Sulphur, p. 20. 

 pi. 6. f. 17. 



Hab. New Guinea ; Straits of Macassar and Malacca (found 

 at a depth varying from seven to twenty-two fathoms) ; 

 Hinds. 

 A characteristic and well-defined species. 



Species 190. (Mus. nob.) 



Pleurotoma claea. Pleur. testa pyramidali, subelonyatd, 

 anfractibus oblique plicato-nodosis, Imnbus ; canali bre- 

 vissimo; sinu amplo; purpureo-fuscd, anfractuum parte 

 superiori alba. 



The clear Pleurotoma. Shell pyramidal, rather elon- 

 gated, whorls obliquely plicatcly noduled, smooth ; 

 canal very short ; sinus large ; purple-brown, upper 

 part of the whorls white. 



Peeve, Pro. Zool. Soe., 1845. 



Hab. ? 



A narrow elongated shell, in which the lower portion of 



the whorls is of a peculiar dark chocolate brown, whilst 



the upper part is white. 



October 1845. 



