4 1 9 
43 
Anoraia. 
Chap. IV. CONCH 
a/ala. 133- O. flat, brittle, pellucid ; dilated towards the 
margin. America. # 
mvtiloides. 134. O. nearly equivalve, ovate, ventricofe, ftraight. 
torto. 135. O. equivalve, intorted. — This and the preced- 
ing ipecies are found foflil in Alface. 
pes-lutrce. 136. O. equivalve, fmooth, wedgq-fhaped with 6 
obtufe plates, varied with purplilli and white, and 
marked with fine longitudinal Arise 3 margin flightly 
fcalloped. 
Gen. 15. Anomia. 
Gen. Char. — The animal is a ligula or Arap-ffiaped 
body, emarginated and ciliated 3 the briftles being 
fixed to the upper valve. There are two linear 
arms, longer than the body, open, ftretched out, al- 
ternate on the valve, ciliated on both fides 3 the hairs 
are fixed to both valves 3 the (hell is inequivalve 3 
one valve being rather flat, the other more gibbous 
at the bafe, with a produced beak, generally curved 
over the hinge 3 one of the valves is often perforat- 
ed at the bafe 3 the hinge is without teeth. A fmall 
linear fear appears prominent, with a lateral tooth 
placed within 3 but on the very margin of the flat 
valve. There are two bony rays for the bafe of 
the animal. 
Species. 
craniolaris 1. A. orbicular 3 the gibbous valve conico-convex, 
flat valve with three hollows at the bafe 3 1 inch long, 
^ broad. Mediterranean feas and Philippine iflands. 
It is fometimes found foffil. 
peBinata. 2. A.' oblong, with branched grooves 3 the gibbous 
valve with two hollows behind. An inch long, \ broad 3 
flat valve perforated. Mediterranean. 
ephippium. * 3, A. roundiih, pellucid, with wrinkled plates 3 flat 
valve perforated 3 diameter fometimes 3 4- inches, moll 
frequently about 2. European and American feas, 
fliores of Britain.— -It is often found adhering to the 
common oyfter. Mr Montagu thus accounts for the 
perforation in thefe (hells. The teftaceous plug, he ob- 
ferves, by which the animal fixes itfelf to other bodies, 
is firmly attached by flrong ligaments to thefe bodies, 
and fo clofely cemented, that they become infeparable. 
When, therefore, the (hell is torn from its native place, 
the plug is left behind upon the Hone or other thell to 
which it adhered. 
capa. * 4. A. obovate, unequal, violet 3 upper valve convex 3 
lower perforated. European and American feas, fliores 
of Britain. 
sleBrica. 5. A. roundifli, yellow, fmooth 3 one valve convex 
and gibbous 3 very thin. Coafts of Africa. 
fquamula. * 6. A. fmall, orbicular, entire, thin like the fcale of 
a filh. European feas, Britain. 
patellfor- 7. A. ovate, convex, fubdiaphanous, flriated ; pofte- 
- mis. rior beak recurved and fmooth. North feas. 
Jcobinata. 8. A. roundifn, fmooth, and rough within 3 beak 
perforated. 
e urita. 9. A. fub-ovate, flriated, and flightly eared 3 beak 
perforated. Norway feas. 
retufa. 10. A. obovate, flriated, retufe with a longitudinal 
cavity 3 beak perforated. Norway feas, adhering to 
zoophytes. 
gryphus. 11. A. oblong, fmooth, with an obfolete lateral 
plate on one valve, and incurved beak 3 the other 
O L O G Y. 
valve Ihort and flattifli. Frequently found in a foflil 
flate. 
12. A. femiorbicular, depreffed, with numerous Arise; peBen, 
one valve flat. Found in a foffil ltate. 
13. A. roundiih, and a little dilated 3 gibbous onjirialula <. 
each fide 3 flriated 3 valves equal. Has been only 
found foffil. 
14. A. fuborbicular, obfoletely flriated 3 hinge trun- truncata, 
cated. European feas. 
15. A. heart-fhaped, with decuffated Arise ; Ihorter reticularis, 
valve more gibbous. Found foffil. 
16. A. dilated, lunated, plaited with longitudinally/>//c«/c//(?o 
flriated grooves. Found only in a foffil flate. 
17. A. dilated, triangular, plaited with wrinkled crifpa,. 
grooves 3 the middle broader. Found foffil in Eng- 
land and Switzerland. 
18. A. roundiih, with numerous grooves 3 valves lacunofa, 
plaited at the tip 3 one of them ffiorter and pitted. 
Found only in a foffil flate. 
19. A. obovate, grooved 3 beak of one valve pubefeens* 
nent, the other gaping 3 about the fize of a cucumber 
feed, covered with fmall, eredl, diflant hairs, Nor- 
way feas. 
* 20. A. conic, pointed, grooved 3 one valve con vexcujpidata. 
with an incurved beak 3 the other pyramidal with a 
large triangular foramen. Found in Derbylhire in a 
foffil flate. 
21. A. roundiih with numerous grooves 3 the valves farBa, 
convex, and 8-toothed at the tip. Found foffil in Swit- 
zerland and Weflphalia. 
22. A. obovate, flriated downy 
valve with a caput-fer-> 
longer perforated beak. Norway feas. It is generally pentis, 
found adhering to the madrepora prolifera. 
23. A. obovate, fmooth, convex 3 one valve with terebratu* 
three plates 3 the other with two 3 the beak of one A. 
valve prominent and perforated. Found frequently in 
a foffil flate, 
24. A. with compreffied plates at the fides of the haCe^ angu/afa> 
anteriorly 3 the middle three-toothed. Found foffil. 
25. A. dilated, fmooth, convex 3 flriated with about liyjlerita. 
3 lobes ; anterior part depreffed, with an acute margin. 
Found foffil in Germany. 
26. A. two-lobed, equal, flriated. Only found foffil .biloba. 
27. A. orbicular, flat, pellucid ; hinge with two \\- placenta. 
near callofities growing within the fliell 3 5 inches dia- 
meter. Indian ocean. 
28. A. nearly quadrangular, convex, and nearly cella. 
clofed 3 bronzed 5 margin repand 3 7 inches diameter. 
Indian ocean. 
* 29. A. covered with fpines as long as the (hells .Jpinofa. 
England, in a foffil flate. 
30. A. roundifli, prickly; crown fmooth and recur- aculeata, 
ved behind 3 lower valve flat, fmooth, and perforated 
at the crown. Norway feas. 
31. A. hyaline, ventricofe ; crown bent towards th eviuricaia* 
right 3 upper valve longitudinally flriated ; lower valve 
flat, very thin, and the circumference of the perfora- 
tion elevated. Guinea. 
32. A. oblong, with a rounded margin 3 one valve fquama, 
flat, thin, fmooth, with a large ovate perforation at the 
tip; the other convex, and longitudinally flriated. Seas 
of Norway. 
33. A. orbicular, hyaline, thin, pun&ured 3 flat valve punBata, 
perforated at the tip 3 fmall, brittle. Ferro iflands. 
3 G 2 34. A, 
