Worms, test ace a. 54. Lepas. - 169 



Inhabits the American and Atlantic feas, and U fometimes found 

 in a foffile Hate: peduncle pale faffron : firft <vol<ve curved, 

 fmooth and carinate on the back, the reft with diftant Arise, 

 each of the larger ones turgid towards the peduncle, with a 

 wedged divergent end; the fmaller ones narrower and more 

 pointed. 



*Anatijera Shell comprefTed^ 5-valved, fmooth, featcd on a peduncle. 



Duck-befhacko 



Natur. Mi/cell, tab. 191. Barbut, tab. I, f. io* 



Pennant Brit. Zool. iv. tab, 38, f t 9, 



Donovans But. Jhclls, i, tab. 7. 



Ellis Philof Tranf. 1758. tab. 34;/. 6~, 



Da c^da Brit, conch, tab. 1 8, f. 3. 



Lifter cone h tab 440,/' 283. 

 1*0 S -~0hemn. touch %tab. too,/. 853—855. 

 T Gualt. Tejl tab. t66, / A, Bj 



Argent, conch, tab. 26, f E. Zoomirph, t, *j,f. I, Ko 



&£« Af>/ 3. /*£. 16. /.i. A. 2. 



2. Shell rounded. Lift, concb. tab. 43T), /*. 280. 



3. The longer valve fpinous on the back. 

 Lifter oonch. tab. 439» fig* 282* 



4. Cancellate with fineftriae; cirereous, 

 Gualt. Test. tab. 106, fig. B. 



Inhabits moil feas* and is generally found fixed in cluflers to 

 the bottoms of veflels and old piecei>of floating timber ; gene- 

 rally whitifh with a blue calt; the margins of the valves yel- 

 low ; fometimes marked with a ray or two dotted with black 1 

 peduncle long^ coriaceous black, and very much wrinkled to- 

 wards the fhell, and growing paler and pellucid toward? the 

 bafe, extenfile ; fometimes though rarely red : <vah>es finely 

 filiate; the 2 larger ones triangular j the i top ones nearly- 

 triangular and about half theftze; the other narrow, long* 

 curved, rounded at the back, a little protuberant at the bale 

 and inclofing the others. 



This fpeeies was formerly fuppofed to be the origin of the 

 Bernacle goofe. See Gerard*; Herbal, p. 1587, 158$. 



Auritai . Shell membranaceous, ventriebfe, featedoh a tube and eared : 

 mouth 8-valved, toothed. 

 Ellis Philof. Tranf. 1758. tab. 34, ft. 

 Seba Muf 3. tab. 16, f. 5. Edw. Glean, t* 286, f. A* 

 Chemn. conch. 8; tap. IOO. f. 857, 8584 

 Inhabits North Seas : peduncle long, 



PfittacvJi Shell hooked behind, 6-valved, wrinkled-, 

 Melin Hist. Nat. Chili, p. 179. , 



VOL. IV.*—- lY Inhabit* 



