PLEUROTOMA. 



Plate XXV. 



(Figures magnified.) 



Species 216. (Mus. Belcher.) 

 Pleurotoma eigida. Pleur. testa ovoid, subabbreviatd, 

 anfractibus superne angulatis, transversim striatic, lon- 

 gitudinaliter costatis, costis latiuscul'is, approximate ; 

 canal i brevi; columella rugosd ; labro incrassato, cre- 

 nulato, sinu ample- ; fulvd. 

 The rigid Pleueotoma. Shell ovate, somewhat abbre- 

 viated, whorls angulated at the upper part, trans- 

 versely striated, longitudinally ribbed, ribs rather 

 wide, approximated ; canal short ; columella wrinkled ; 

 lip thickened, sinus large ; fulvous, 

 Clavatida r'ujida, Hinds, Moll. Voy. Sulphur, p. 24. 

 pi. 7. f. 18. 

 Hab. Panama; Hinds. 



An obtusely ovate shell with rather broad approximat- 

 ing ribs. 



Species 217. (Mus. Belcher.) 



Pleurotoma argillacea. Pleur. testa ovatd, acumi- 

 nata, laevigata, uufractihus tuberculato-costatis, costis 

 superne angulatis, approximatis, in anfractu ultimo in- 

 ferne evanidis; canali breoiusculo, columella labroque 

 crenulatis, sinu amplo ; fused, corned. 



The clay Pleurotoma. Shell ovate, acuminated, smooth, 

 whorls tubercularly ribbed, ribs angulated at the up- 

 per part, approximating in the last whorl, faint at the 

 lower ; canal rather short, columella and lip crenu- 

 lated, sinus large ; brown, homy. 

 Clavatida argillacea, Hinds, Moll. Voy. Sulphur, p. 18. 

 pi. 6. f. 1. 



Hab. Straits of Malacca (from mud at the depth of seven- 

 teen fathoms); Hinds. 

 Encircled with short tubercular approximating ribs. 



Species 218. (Mus. Belcher.) 

 Pleurotoma neglecta. Pleur. testa subfusiformi, acu- 

 minata, anfractibus rotundatis nut leviter angulatis, 

 transversim elevato-striatis, longitudinaliter costatis, 

 costis rotundatis, approximatis ; canali breoiusculo; 

 labro incrassato, sinu amplo ; ferrugineo-fuscd. 

 The neglected Pleurotoma. Shell somewhat fusiform, 

 acuminated, whorls rounded, or slightly angulated, 

 transversely elevately striated, longitudinally ribbed, 

 ribs rounded, approximated ; canal rather short ; lip 

 thickened, sinus large ; rusty-brown. 

 Clavatida neglecta, Hinds, Moll. Voy. Sulphur, p. 20. 

 pi. 6. f. 14. 

 Hab. Gulf of Nicoya, Central America (found under stones 

 at low water) ; Hinds. 



An acuminated spire with the whorls short and angu- 

 larly rounded. 



Species 219. (Mus. Cuming.) 



Pleurotoma putillus. Pleur. testa ovatd spird pyra- 

 midaU-acuminatd, anfractibus transversis subtiliter stri- 

 atic, superne concavis, infra nodosis, nodis longitudina- 

 liter oblique confluentibus ; canali breoiusculo; labro 

 simplici, sinu lato ; flavicante-albidd, lined undulatd 

 fulvo-aurantid inter nodos fluente. 



The dwarf Pleurotoma. Shell ovate, spire pyrami- 

 dally aciuninated, whorls transversely finely striated, 

 concave round the upper part, nodose beneath, nodules 

 obliquely flowing down ; canal rather short ; lip sim- 

 ple, sinus broad; yellowish-white, with a fulvous 

 orange undulating Line flowing down between each 

 nodule. 



Reeve, Pro. Zool. Soc., 1845. 



Hab. Calipan, Island of Mindoro, Philippines (found among 

 coarse sand at the depth of fifteen fathoms) ; Cuming. 



The specimen here figured is a shell of rather immature 

 growth ; in older specimens the flowing lines become fainter. 



Species 220. (Mus. Cuming.) 



Pleurotoma rubida. Pleur. testa ovatd, spird brevi, in- 

 terdum acuminata, anfractibus superne Iambus, trans- 

 versim elevato-striatis, longitudinaliter costatis, costis 

 obtuso-rotundatis, latiusculis, approximatis, labrum ver- 

 sus evanidis ; canali bred ; columella' labroque crenu- 

 latis; rosaceo-rubidd, fascia nigrkante juxta suturam, 

 fascidque mediand in anfractu ultimo ornatd, faseiis 

 interdum nuttis. 



The red Pleurotoma. Shell ovate, spire short, some- 

 times acuminated, whorls smooth round the upper 

 part, transversely elevately striated, longitudinally 

 ribbed, ribs obtusely rounded, rather broad, approxi- 

 mated, fading towards the outer lip; canal short, lip 

 and columella erenulated ; pinkish-red, ornamented 

 with a black band next the suture, and one round tin 

 middle of the last whorl, bands sometimes wanting. 

 Clavatida rubida, Hinds, Moll. Voy. Sulphur, p. L8 



pi. G. f. G. 

 Pleurotoma angulata ? Kiener. 



Hab. [slands of Ticao and Masbate, Philippines (under 

 stones at low water); Cuming. NVu Guinea (from 

 mud al ili'' depth of seven fathoms), and New Ire- 

 laud (from among coarse sand at Low water); Hind-. 



October 1845. 



