INDEX. 



xvu 



Leptodesma umbonatum, Sail, 



L. umbonatum var. depressum. Rail, 199, 2i 



Lima glaber, Hall, .... 



L. macroptera, Coui'ad, 



L 1 obsoleta, Hall, .... 



L. rugmstriata, Hall, . 



LiMOPTERA, Hall, .... 



L. cancellata, Hall, . 



L. cancellatavar. occidens, H. i^ W., 



L, cui'vata, Hall, 



L. macroptera, i Conrad; Hall, 



L. obsoleta. Hall, 



L, pauperata, Hall, 



Lyhiopecien, Hall, ... 



L- anomia?formis. Hall, . 



L. cymbalon, Hall, 



L. Dardanus, Hall, 



1,. fasclatus, Hall, 



L. interradiatus, Hall, 



L macrodontu.s. Hall, 43, 4.t, 46, 48 



L,. magnilicus. Hall, . . 45, 47, 



L. orbiculatus, .ff«;Z. . 



L. parallolodontus. /J«Zi, 



L. Polydorus, Hall. . 



L. Priamus, Hall. .... 



L. solo.v. /TaZi, .... 



L. tricostatus, ( Vanuxem) Hall, 



MERISTIhA, iJn(i, .... 



MoDiOLA, Lamarck, ... 



JIf. metella. Hall, ... 



ilf. prcecedens. Hall, 



M. (Mytilops) metella, ffiiZZ, 



M. M. ) pra3cedens, Hall. 



MODIOMORPIIA, Hall, 



Monotis princeps, Conrad, 



SIYTILAKCA, Hall, .... 



44, 



, 60, 53, 55, 



4S, no, 51, 



41, 43, 

 40, 



45. 50, 

 43, aO, 54, 



45,51, 

 47, 48, 



175, 236, 



M. 

 M. 



M. 

 M. 

 M. 

 M. 

 M. 

 M. 

 M. 

 M. 

 M. 

 M. 

 M. 

 M 

 M 

 M. 

 jM. 

 M. 

 M. 



iir 



M 

 M- 

 M, 



arenacea. Hall, 

 attenuata, 77rt?^ 

 carinata, ffoZZ, 

 Chemungeusis, (C'onr.) if. .25' 

 libristriata, ( fTftiie if- Whitfield) Hall. 

 gibbosa, Hall, 



lata. Hall 



occidontali.?, ( White tf Whitfield) Hall, 

 oviformis, (Conra<l) Hall, 

 ponderosa. Hall, . 

 t>yramidata. Hall, 

 radiata, Hall, 

 regular!.?. Hall. 

 simplex, Hall, 

 triqaeter, (Conrad) Hall, 

 umbonata. Hall, . 

 {Pli'thomytilus) arenacea, Hall, 



i.P. 



(P. 



(P. 



(P 



(P 



(P. 



Myttlops, Hall. 

 M. [Modiola 



M. {M. 



M. {M. 



M. [M. 



) cordiformis. Hall, 

 ) Knappi, Hall, 

 ) mytilimera, Conrad, 

 ) ovata. Hall, 

 ) oviformis. Hall, 

 ) ponderosa, Hall, . 



)lata,UiiU, . 

 ) metella, Hall, . 

 ] prtscedens, HaU, . 

 ) simplex. Hall, . 



PAGE. 

 . 198 



203 



246, 



:00, 202, 



85 



251 



Si 



15 



243 



344 



244 



350, 251 



244, 346, 250 



243, 349 



. 343 



3, 40, 74 



. 53 



50 



41 



55 



60 



57 



57 



81 



42 



45, 47, 



56 



66 



51 



28 



267 



266 



267, 268 



368 



. 367 



234 



4 



266 



253 



360 



258, 359, 2fil 



358,259,261,362, 264 



. 864 



363 



. 363 



25!), 363, 



175, 



1, 



263, 262, 



364 



260, 262 



365, 256, 

 . 364, 



262, 



264 

 356 



253 

 263 

 361 



265 



85r 



254 

 254 

 356 



254 

 254 

 265 

 255 

 267 

 262 

 268 

 267 

 261 



MYTILUS, .... 



M. Chemungensis, (Conrad) Pliillips & 



M. fibristrlatus. White & Whitfield, 



M. occidentalis. White & Whitfield, 



M. Whitfieldianus. Winchell, 



PaLjEOPinna, Hall. 



P. flabella, Hall, . 



P. recurva. Hall, 



Pecten cancellatus. Hall, 



P. 1 convexus, H.all, 



P. 1 crennlatus. Hall, 



/*, ? dolabriformis. Hall. 



P. duplicatus, Hall, 



P. Halleanus, D'Ortiigny, . 



P. striatus, Hall, . 



P. Tranquebarieus, Gmelin, 



P. uudulatus, McCoy, 



Pernopecten, Winchell. . 



P. fasciculatus. Hall, 



Pletho.hytilus, Hall, 



P. ponderosus. Hall. 



Pterinea, Goldfuss, 



P. avis. Hall, 



P Boydi. Conrad, 



P. Chemungensis, {Conrad) Hall, 



P. consimilis. Hall, 



P. costulata, Roemer, 



P. dispanda. Hall. 



P. fasciculata, Goldfuss, 



P. flabella, Hall, . 



P. grandis. Hall, 



P. interstrialis. Hall, 



P longispina, (SaW)^. \ Miller, 



P. pinguis. Hall, . 



P. prora, Hall, . 



P. protexta, (Coarad) S A. Miller 



P. reprobus. Hall, 



P. reversa. Hall, . 



P. reversa var. avis. Hall, . 



P. rigida. Hall, 



P. ? suborbicularis. Hall, 



P. triqueter, Conrail, 



P. (Vertumnia) avis, Hall, 



P. (V. ) reproba, .HaH, . 



P. (V. ) reversa, flaii. 



Pteronites, McCoy, . 



P. inoptatus. Hall, 



P. laivis, (Hall) S. A. Miller, . 



P. muricatus. Hall. 



P. profundus. Hall, 



P. rostratus, Hall, 



p. spinigerus, (Conrad) .S. A, Miller, 



P. subdecussata. Hall, 



Pterinopecten, Hall, 



conspectus. Hall. . 

 crenicostatus. Hall, 

 cremtlatus. Hall, . 

 diguatus, Hall, 

 dispandus. Hall, 

 erectus, Hall, . 

 e.xfoliatus, Hall, 

 fllite.xtus. Hall, 

 Hermes, Hall, 

 imljocilis, Hall, 



63, 



175, 



•Salte 



103, 



95, 98, 101, 

 90, 



91, 92, 93, 97, 



91, 

 103, 104, 105, 



151, 208, 237, 



67, 



65, 66, 68, 69, 

 .58, 78, 79, 



, 63, 64, 65, 

 73, 76, 



59, 60, 



67, 



63, 64, 66, 67, 



236 



2.58 



264 



263 



264 



240 



340 



341 



18 



28 



82 



26 



17 



18 



22 



48 



72 



81 



.55 



2,53 



254 



91 



107 



113 



103 



100 



93 



97 



93 



98 



91 



96 



179 



93 



107 



183 



72 



105 



105 



101 



80 



365 



105 



106 



104 



239 



339 



158 



108 



239 



338 



177 



110 



248 



74 



81 



78 



67 



77 



77 



61 



70 



69 



75 



