- WORMS. TESTACEA; 66. Oftrea. 273 



hutitiliii Shell equivalve, with 50 imbricate interrupted rays : ears 

 equal, one of them unequally plaited. 

 Lifter conch, tab* 176. Klein oftr. t.t). f. 32, 33* 

 Knorr Vergn. 6. tab. 38. fig % 5. 

 Chemn. conch.'], tab. 6%. fig. 652. 



2. Chemn. conch. 7. /a£. 68 # /g-. 655. 



Inhabits the American Ocean ; refembles the laft, but has more 

 numerous rays: Jhell fnowy with a crenate margin ; 2) mar- 

 gin entire. 



'Hiatus Shell whitifh, thin, gaping each fide and oblique, with 



obfolete undulate rays and trarifverfe rounded femi- 

 lunar ftriafc.- 



Schrcet. Einl. in conch. 3. tab. 9, fi£. 4. 



Inhabits Norway ; r§ inch long, f of an inch broad: ears very 

 fmall and acute : margin crenate, very entire within. 



Excavata. Shell dirty- whitey with longitudinal undulate ftrias and a 

 few tfanfverfe rings, frriooth within : one ear obfo- 

 lete : margin very entire. 



Chemn. conch. 7. tab. 68._/\ 654. 



Inhabits Norway; rare: 5 inches long, 3J broad. ! 



B. Rough and generally plated on the outfide. Oyflefs. 



Malleus* Shell equivalve 3-lobed, 2 of the lobes placed tranfverfely 



like the head of a hammer. 

 Barbut, tab. 9. fig. l. Rumpf. Muf tab. 47, H. 

 Argent, conch, tab. 19. A. Gualt, test. tab. 96. D ? 

 Lift. tab. 219. Bonan* Muf. Kirch. 2; Jig, 1 2©* 

 Peti<v. Amb. aq- tab. 20, fig. IO. 

 Seba Muf 3. tab. 91. /. 4, 5. /«£. 93. /*. 1, 2. 

 Spengler teji. conch. tab< 1. Jig. A. 

 Chemn. conch. 8. Az£. 70. /%". 655, 656. 

 Inhabits deeps of the Indian and South Seas : very rare. 

 Shell about 6 inches long and 4f broad; black with a dark blue 



call, gaping, formed like a crofs j the valves lamellate. 



tdfella* Shell fubpelluckl, narrow, elongated^ brittle, lamellate ; one 

 end rounded ; within very fmooth and glofly. 

 Chemn. conch. 8. tab. 70. Jig. 657. 

 2. Af<2?\\ allg. Naturf' 4. /#£. 147, ^j>v 2. 



Inhabits the Red Sea: 3- inches long, 1 broad. 

 Shell violet, tawny or ferruginous, gaping at the hingej rough 

 on the outfide, and thinner at the rounded end, 



VOL. IV.— M m Anatina, 



