522 



INDEX. 



Macoma — Continurd. 



proxima, 95. 

 Macrocyclis concava, 406. 

 Mactra lateralis, 77. 



ovalis, 75. 



polipiyina, 75. 



ponderosa, 75. 



solidissiina, 73. 

 Miimma iminaciilata, 344. 

 J\Jargarita acuminata, 284. 



(irctica, 281. 



argentata, 282. 



canipanulata, 282. 



cinerua, 279. 



lielirina, 281. 



iiiiiiutissima, 280. 



obsciira, 283. 



uiululata, 280. 



varicosa, 285. 

 Margaritaiia arcuata, 174. 



niarginata, 177. 



uiululata, 176. 

 Melampus hidentatus, 467. 

 Melamlio decisa, 289 

 3Ieiib(ea arhuscula, 236. 

 Menestho albula, 333. 

 Mcsodesinu airtntn, 80. 



Jaiiiesii, 81. 

 Modiola dlscoi .s, 1 93. 



discrepans, 192. 



ylanauld, 194. 



modiolus, 186. 



nexa, 190. 



pfclinula, 195. 



plicatula, 188. 

 Modiolaria conugata, 193. 



discors, 192. 



nigra, 190. 

 Molgula arenata, 21. 



producta, 21. 

 Montarjtta hidtntata, 86. 



elevaia, 86. 

 Mya arcnaria, 55. 



trniicata, 58. 

 Mytilus edulis, 183. 



pellucidiis, 184. 



N. 



Nassa obsolcta, 362. 



trivittata, 364. 



vibex, 365. 

 Natica canalicitlitta, 348. 



clausa, 342. 



diiplicata, 345. 



Jliiva, 347. 



heroic, 338. 



imimiculdla, 344. 



]>iisi//n, 341. 



pusiila, 344. 



tn'srn'ala, 340. 

 Nc£Era pel 1 u ci d a , 61. 

 Ncverita duplicata, 345. 

 Niobe zonata, 258. 



Nucula (see also Lcda and Yoldia) 

 delphinodonta, 153. 

 exj)ansa, 152. 

 inflata, 152. 

 proxima, 150, 

 tenuis, 149. 



o. 



Odostomia bisutnralis, 327. 



dealbata, 327. 



exujua, 327. 



fusca, 325. 



impressa, 330. 



iiiodesta, 327. 



producta, 325. 



seminuda, 329. 



tritida, 328. 

 Ommastrephcs Bartramii, 512. 



sagittatus, 510. 

 OsteodtsiiHi liijalina, 64. 

 Ostrea borealis, 203. 



Virginiana, 202. 



Pahidina decisa, 289. 

 Pandora trilincata, 62. 

 Panoprea arctica, 51. 

 Pa ted a Candida, 270. 

 Pecten concentricus, 199. 



fuscus, 200. 



irradians, 199. 



Islandicus, 198. 



Ma(/elluiiiciis, 196. 



tcnuicostatus, 196. 

 Pelonaia, 27. 



arenifira, 27. 

 Pera pelhu-ida, 17. 

 Petricola dactylus, 92. 



Juniivala, 90. 



pholadiformis, 90. 

 Pldlinefurmosa, 2 1 3. 



iineolata, 214. 



qnadiata, 213. 



sinuata, 213. 

 Pholas costata, 36. 



cris])ata, 39. 



truncitta, 38. 

 Physa ancillaria, 485. 



e/o}>i/(itii, 486. 



heterostropha, 483. 

 Pisidium abdituni, 113. 



Adamsii, 110. 



ffquilatcrale, 1 12. 



compressum, 110, 



dubium, 109. 



ferrugineuni, 113. 



variabile, 1 15. 



ventricosum, 1 16. 

 Placobranchus catulus, 256. 



shnjilex, 257. 

 Planorbis armii/erus, 500. 



bicarinatus, 491. 



