UNIO.— INDEX. 



pugio,Be„son XCV. 51(5 



pullatus, Li^a LXVI. 335 



pumilis, Zieghv LXXIII. 374. 



pumilis, ira XXXVI. 198 



purpurascens, Lamarck LXVIII. 346 



purpuratus, Lamarck XXIV. 115 



purpureus, Say LXVIII. 346 



pitatidata (Tlicliderma), Swaiii- 



son I- 4 



pudulosiis. Lea XII. 43 



pyramidatus, Lea LXIV. 323 



qiiadrulus, Rajinesqne VI. 24 



;-ao?/a^ff (Uuiopsis), Swainson . . LXXVI. 396 



radiatiis {Mya), Gmelin XXVII. 139 



Eangiamis, Lea XIV. 54 



rariplicata, Lamarck II. 5 



ravistelhi.s, Morelet LXXII. 366 



Raveneliamis, Lea XVI. 70 



rectilinearis, Soicerby LXV. 333 



rectus, Law.arck XIX. S6 



rt^twx?,, Rqfiiiesque VI. 23 



resiularis, Lea LXVIII., 351, and 



XXXIV. 181 



rm\ionm%, Sckmiiit LXXII. 371 



retioulatus, JfoWcflW LXXXVI. 458 



retusiis, Lamarck LXXI. 363 



rhomboides, Zf;a LXXXIX. 480 



rJwmboidea (Mya), SchrOter . , XXII. 98 



rkombiila, Lamarck LXVIII. 346 



Rh.uacoica (Monocondytea), 



D'Orbigny ' XCIII. 505 



Kiddellii, i?a LXXXIII. 443 



ridibundus. Say XV. 03 



Roanokensis, Lea LXVII. 341 



Roissyi, Midland LXII. 311 



rosiraia, Studer XXV. 124 



fosirala, Lamarck XXY. 123 



rostrata, Valenciennes XVI. 94 



rotundatus, Lamarck LXXIV. 384 



rotundatus, Eeeve X.KIII. 106 



rotundus (Diplodoi/), Spl.c .... LXXII. 379 



rotundus, Moricand LXXXVI, 467 



TJoiwii, Dupuy XXV. 123 



Rowellii, Lea LXXXVIII. 471 



rubellianus. Lea X(.'. 490 



rubiginosus, Lea XXVII, 136 



rufusculus, Lea LXXIII. 377 



rugosus, Barnes LX. 302 



rtigosvs (in part), Barnes .... VII. 25 



j-K^M^M (Mya), Wood LI. 267 



rusticus, Soicerby (not Lea) . . LXIV. 



sacculus, Anthony XV. 



sagittiformis, Lea XCII. 



sagrinatiis, Sowerby LXVII. 



Salmenianus {Anodon), Gonld . . XCH . 



Sandrii, Villa LXXIX. 



Sapotalensis, Lea XCI. 



satur, Lea XCII. 



Sayii, Ta.ppan LXX. 



scalenia, Ilafinesque LXIX. 



Schoolcraftensis, Len 1. 



Schwavtzenbacliii, Rossmiisder XLIV. 



scobinatus, Lea LXIII. 



scnlptilis (Alasmodon), Say . . LXXVI. 



scutum, Benson XCIV. 



securis. Lea LXI. 



semiffranosns. Reeve X. 



semicjuadratus, Soicerby XLVIII. 



semirugata, Lamarck XXII. 



Shanghaiensis, Zm XX. 



Sliepardianus, Lea X,X. 



Showalterii, Lea LXXXI. 



Slmttleworthi, Lea XXXII. 



Siculus, Swainaon LXXI. 



Sikkimensis, Lea LXXVI. 



slUquoideus, Barnes LVIII. 



sinuatus, Lamarck LXII, 



Soleniformis, Lea XLV. 



soUda (Mysca), Turton XXV. 



solidus, Lea XXVII. 



Solisianus, D'Orbigny XCIII. 



sordldus. Lea LXVIII. 



Sowerbianus, Lea XIV. 



sparsus, Lea IV. 



spatludatus, Lea LXV. 



speciosus, Lea LXXXIV. 



Spilbnaiinii, Lea LXXXII. 



spinosus, Lea XLIX. 



spissus, Lea LXXXVIII. 



splendidus. Lea XXXI. 



spuria (Mya), Gmelin LXXI. 



stapes. Lea XIII. 



stegarius, Rafnesqne XII. 



Stewardsoni, Lea XV. 



Stonensis, Lea LXXXVI. 



stramineus, Conrad LXXX. 



stramlneus, Reeve XXXIX. 



striatissiraus, Anthony LXXXVI. 



striatuhis, Lea LXXII. 



striatus, Lea LXXVIII 



324 



67 

 499 

 345 

 513 

 413 

 495 

 501 

 350 



82 

 3 

 241 

 313 

 399 

 510 

 304 



36 

 258 



98 



96 



426 

 167 

 364 

 400 

 293 

 311 

 243 

 124 

 133 

 507 

 346 

 58 

 14 

 328 

 447 

 435 

 261 

 470 



06 

 402 

 422 



