PLEUEOTOMA.— Plate XXV. 



An extremely variable species, though always preserving 

 its peculiar pinkish-red variety of colouring. Kiener ap- 

 pears to have figured a specimen of it for Donovan's Mu- 

 rex angulalus of the English Channel. 



Species 221. (Mus. Cuming.) 



Pleurotoma Candida. Pleur. obeso-fiisiformi, laevigata, 

 basin versus striata, anfractibus superne angulatis, lon- 

 gitudinaliter costatis, costis laliusculis, obliquis; canali 

 breviusculo ; columella labroque intus crenulatis ; sinu 

 amplo, superne calloso ; Candida. 



The white Pleurotoma. Shell obesely fusiform, smooth, 

 striated towards the base, whorls angulated at the 

 upper part, longitudinally ribbed, ribs rather broad, 

 oblique ; canal rather short, lip and columella crenu- 

 lated within ; sinus large, thickened round the upper 

 part ; white. 



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

 pi. 6. f. 18. 



Hab. Magnetic Island, coast of Veragua ; Hinds. 



A pale stout solid shell, with the sinus remarkably 

 thickened. 



Species 222. (Mus. Cuming.) 



Pleurotoma spectrum. Pleur. testa fusiformi, trans- 

 versim elevato-striatd, anfractibus rotundatis, longitu- 

 dinaliter fortiter oblique plicato-nodosu, nodis in an- 

 fractu ultimo evanide confluentibus; canali brevi; labro 

 simplici; nived, nodis pa.llide rufescente-fuscis. 



The phantom Pleurotoma. Shell fusiform, transversely 

 elevately striated, whorls rounded, longitudinally 

 strongly obliquely plicately nodided, nodides upon 

 the last whorl faintly flowing down towards the base ; 

 canal short ; lip simple ; snowy-white, nodules palely 

 tinged with reddish brown. 



Reeve, Pro. Zool. Soc, 1845. 



Hah. Puerto Galero, Isle of Mindoro, Philippines (found 

 among coral sand at the depth of about nine fathoms) ; 

 Cuming. 



A pale obliquely plicated shell minutely and delicately 

 ridged across. 



Species 223. (Mus. Belcher.) 



Pleurotoma radula. Pleur. testa pgramidali, acumi- 

 nata, anfractibus lineis granuliferis decussatis, uniseri- 

 atim tuberculatis, luberculis sublunatis; canali brevi, 

 aperturd pared, sinu amplo ; corneo-fuscd. 



The grater Pleurotoma. Shell pyramidal, acuminated, 



whorls decussated with granular lines, encircled with 



rows of sublimate tubercles ; canal short, aperture 



small, sinus large ; horny brown. 

 Hinds, Moll. Voy. Sulphur, p. 16. pi. 5. f. 9. 

 Hab. Straits of Malacca (in mud at the depth of seventeen 



fathoms); Hinds. 



A dark brown finely granulated shell encircled with rows 

 of tubercles of which the middle is the most conspicuous. 



Species 224. (Mus. Belcher.) 



Pleurotoma aspera. Pleur. testa subclavatd, anfractibus 

 rotundis, longitudinaliter costatis, lineis elevatis decus- 

 satis, carina subobscurd prope suturam cingulatis ; ca- 

 nali brevi; labro incrassato, crenulato, sinu amplo; 

 nigrican te-f/iscd. 



The rough Pleurotoma. Shell somewhat club-shaped, 

 whorls rounded, longitudinally ribbed, decussated with 

 raised lines, and encircled with a somewhat obscure 

 keel near the suture ; canal short ; lip thickened, cre- 

 nulated, sinus large ; blackish-brown. 

 Clavatula aspera, Hinds, Moll. Voy. Sulphur, p. 19. 

 pi. 6. f. 7, 8. 



Hab. Guayaquil (in mud at the depth of five fathoms) ; 

 Hinds. 



A strongly-marked dark coloured shell. 



Species 225. (Mus. Cuming.) 



Pleurotoma bilineata. Pleur. testa ovato-oblongd, sub- 

 pgramidali, anfractibus medio tumidis, uniseriatim pli- 

 cato-nodosis, nodis angnstis, compressiuscnlis, anfractiis 

 ultiini dorso callositate mnnito ; canali brevissimo, la- 

 bro simplici, sinu amplo ; incarnato-fuscescente, lineis 

 dnabus saturatioribus, quorum superiore multo snbti- 

 liore, inter nodos cingulatd. 



The two-lined Pleurotoma. Shell ovately oblong, 

 somewhat pyramidal, whorls swollen in the middle 

 and plicately nodided, nodules narrow, rather com- 

 pressed, back of the last whorl furnished with a cal- 

 losity ; canal very short, lip simple, sinus large ; pale 

 fleshy brown, encircled between the nodules with two 

 darker brown lines the upper of which is much the 

 finer. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. Islands of Capul and Mindoro, Philippines (found on 

 the reefs and among coarse sand at the depth of fifteen 

 fathoms); Cuming. 



In some examples of this very characteristic species the 

 colour is suddenly darker below the row of oblique plicated 

 nodules, and assumes a band-like appearance. 



