Plate 27 

 ATLANTIC COAST BIVALVES 



a. COMMON AWNING CLAM, Solemya 



velum Say, % inch (Nova Scotia to 

 Florida), p. 333. 



b. SHORT YOLDIA, Yoldia .sapotilla Gould, 



1 inch (yVrctic to North Carolina), 

 p. 340. 



c. POURTALES' GLASS SCALLOP, Pro- 



peamiissium pourtalesinninn Dall, '2 

 inch (off Florida), p. 369. 



d. MYALLS YOLDIA, Yoldia myalis Couthouy, 



1 inch (Arctic to Cape Cod), p. 340. 



e. BROAD YOLDIA, Yoldia thraciaeformis 



Storcr, 2 inches (Arctic to North Caro- 

 lina; also Alaska), p. 340. 



f. SULCATE LIMOPSIS, Limopsis sulcata 



V. and B., 3^ inch (Massachusetts to 

 West Indies), p. 347. 



g. UNDULATE BITTERSWEET, Glycy- 



rneris undata L., 2 inches (North Caro- 

 lina to West Indies), p. 348. 



h. DECUSSATE BITTERSWEET, Glycy- 

 meris decussata L., 2 inches Florida and 

 West Indies), p. 348. 



i. COMB BITTERSWEET, Glycymeris pec- 

 tinata Gmelin, ^4 inch (North Carolina 

 to West Indies), p. 348. 



j. MOSSY ARK, Area umboiiala Lamarck, 



2 inches (North Carolina to West In- 

 ches), p. 342. 



k. DOC BALES' ARK, Barbatia tenera C. B. 

 Adams, 1 inch (Florida and West In- 

 dies), p. 343. 



1. ICELAND SCALLOP, CJdamys islaudica 

 Midler, 3 inches (Arctic to Massa- 

 chusetts; also to Washington), p. 365. 



m. ATLANTIC DEEPSEA SCALLOP, Placo- 

 pecten magellanicus Gmelin. 9 inches 

 (Labrador to North Carolina), p. 366. 



n. TURKEY WING, Area zebra Swainson, 

 3 inches (North Carolina to West In- 

 dies), p. 342. 



o. CUT-RIBBED ARK, Anadara lienosa fie- 

 ri da ji a Conrad, 4 inches (North Caro- 

 lina to Texas), p. 344. 



p. EARED ARK, Anadara notabilis Roding. 

 2 inches (Florida to Brazil), p. 344. 



q. RED-BROWN ARK, Barbatia cancellaria 

 Lam., 1 inch (Florida and West Indies), 

 p. 343. 



r. WHITE BEARDED ARK, Barbatia ean- 

 dida Helbling, 2 inches (North Caro- 

 lina to Brazil), p. 342. 



s. TRANSVERSE ARK, Anadara transversa 

 Say, 1 inch (Cape Cod to Texas), p. 345. 



t. BLOOD ARK, Anadara ovalis Brug., 2 

 inches (Cape Cod to Texas and West 

 Indies), p. 345. 



u. WHITE MINIATURE ARK, Barbatia 

 doniingensis Lam., j/2 inch (North Ca- 

 rolina to West Indies), p. 343. 



V. SAW-TOOTHED PEN SHELL, Atrina 

 serrata Sby., 6 inches (North Carolina 

 to Florida), p. 360. 



w. AMBER PEN SHELL. Pinna earnea 

 Gmelin, 5 inches (Florida and West 

 Indies), p. 360. 



X. STIFF PEN SHELL, Atrina rigida Solan- 

 der, 7 inches (North Carolina to West 

 Indies), p. 360. 



y. INCONGRUOUS ARK, Anadara brasiliana 

 Lam., 2 inches (North Carolina to 

 Texas to Brazil), p. 346. 



z. PONDEROUS ARK, Noetia ponderosa 

 Say, 2 inches (Virginia to Texas), p. 346. 



