24 



33 Mytilus Granulatus, p. 246 



34 Strigatus, p. 251 



35 Pinna Saccata, p. 253 



36 Atropurpurea, p. 255 



37 Perna Costellata, p. 259 



38 Malleus Albus, p. 260 



39 Avicula Semisagitta, p. 261 



40 Meleagrina Mazatlanica, 



APP. 



41 Lima Bullata, p. 266 



42 — Ventricosa, p. 267 



43 Pecten Latiauritus, p. 275 



44 Plicatula Australis, p. 288 



45 Spondylus Sinensis, p. 294 



46 Cussoni, p. 295 



47 Ostrea Adriatica, p. 296 



48 Rosacea, p. 304 



49 Vulsella Ovata, p. 311 



50 Placuna Papyracea, p. 312 



51 Anomia Elyros, p. 314 



52 JEnigmatica,p.313 



53 Discina (=Orbicula)Laevis, 



p. 317 



54 — — Lamellosa, p. 317 



55 Terebratula Rubicunda, p. 



324 



56 



57 



58 

 59 



p. 329 



322 



Septentrionalis, 



Californica, p. 



Pisum, p. 328 

 (Magas ?) Cum- 



ingii, p. 331 

 60 Lingula Hians, p. 333 



