444 WORMS. TESTACEA. 78. Mure*. 



Inhabits Canada and the Frozen Sea, Shell brown, fometimes 

 larger and uniform, fometimes lels and radiate imooth or tranf- 

 'verfely ftriate : margin of the back knotty. 



Ficus, Beak dilated : fhell filiate, the whorls feparatcd by a fmall 



canal; the outer-ones brown, the firll ciowned with 

 knobs at the bafe. 

 Inhabits—? — Martini conch. 3, jab. 66. fig. 741. 

 2. Quoit. teR. tab. 26. N. 

 3^ Chemn. conch. 10 tab. 163. fig, 1564,1565. 



Carica. 



Beak dilated; fhell tranfverfely ftriate : fpire a little pro- 

 minent, the whorls crowned with fpines at the bafe. 

 Lister tub 880, Gualt. teft. tab. 47. B. 

 Knorr !'er;n. 1. tab. 30 fig. 4 and 6. t. 2J.f. i» 

 Martini conch. 3. tab. OJ.fig, 774. t- 69,/! 756, 757. 

 Inhabits about 8 inches long : pillar plaited. 



Rapa. Shell folid nmbilicate with a triple row of knots and tranf- 



verfely ftriate: aperture large ftriate. 

 Knorr Vergn. 5. tab. z\.fi%. 2. Spengl conch, 3. C. 

 Martini co^ch. 3. tab. 6$. fig. 750 — 753. 

 2. Lister tab. 894, 895. 



Inhabits India: relembles Bulla rapa. 



Niveus* Beak dilated: fhell fnowv diaphanous: who.ils of the fpire 

 feparatcd by a fmall gvoove, the firft with tranfvcrfc 

 carinate ribs. 



Bonan recr. 3. fig. 338, Muf. Kirch. $.f. 337. 



Inhabits the Seas round Brdfil. 



Granum. Shell hemifphjerical glabrous diaphanous, with a fpreading 

 ftraight beak, crown papillary. 

 Lister tab* 881. Ellis corallines, tub. 33. A. a. 

 Muf. (lOttw. tctb. 30. fig. 2, 5. 



Inhabits North America. Whorls convex and growing gradually 

 lefs towards the tip, 



Aruanus* Beak dilated: fpire crowned with fpines. 

 Rumpfi muf tab. 28. fig. A. 

 Bcnan. recr. and MuJ. Kirch. 3. f 101. 

 Chemti. conch. 4 p. 143. vign. 39, D. 

 Inhabits New Guinea* Shell coarfe ponderous, black or blueifh, 

 Unrounded with rings: aperture angular: beak rather long; 

 Jpire raucronate. 



Perverfus, 



