Bathynectes, Stimpson. 



47 longipes, Risso. 



48 superba, O. G. Costa. 



= B. longispina, Stimpson. 

 = Thranites velox, Bovallius. 

 Lupa, Latreille. 



49 hastata, H. M. Edw. 

 Callinectes, Stimpson. 



50 diacanthus, Latreille. 

 Neptunus, De Haan. 



51 Sayi, Stimpson. 

 Panopaeus, H. M. Edwards. 



52 Herbstii, H. M. Edw. 



53 *depressus, J. S. Smith. 



54 *Sayi, J. S. Smith. 



55 texanus, Stimpson. 

 Eriphia, Latreille. 



56 spinifrons, Herbst. 

 Pilumnus, Leach. 



57 hirtellus, Pennant. 



58 spinifer, H. M. Edw. 



59 tridentatus, Maitland. 

 Xantho, Leach. 



60 floridus, Montag-u. 



6 1 rivulosus, Risso. 



62 tuberculatus, Bell. 

 Perimela, Leach. 



63 denticulata, Montagu. 

 Paragalene, Kossman. 



64 longicrura, Nardo. 

 Cancer, Linne. 



65 pagurus, Linnet 



66 irroratus, Say. 



67 borealis, Stimpson. 



68 Bellianus, J. Y. Johnson. 



69 magister, Dana, P. 



70 productus, Randall, P. 



71 antennarius, Stimpson, P. 

 Trichocarcinus, Miers. 



72 oregonensis, Miers, P. 

 Heterocrypta, Stimpson. 



73 Maltzani, Miers. 



= H. Marionis, A. M. Edw. 

 Lambrus, Leach. 



74 mediterraneus, Roux. 



75 angulifrons, Latreille. 



76 massena, Roux. 



77 *Verrillii, J. S. Smith. 

 Lissa, Leach. 



78 chiragra, Herbst, 



Libinia, Leach. 



79 emarginata, Leach. 



80 dubia, M. Edw. 

 Pelia, Bell. 



81 mutica, Stimpson. 

 Eurynome, Leach. 



82 aspera, Pennant. 

 Pisa, Leach. 



83 tetraodon, Pennant. 



84 biaculeata, Montagu. 



85 nodipes, Leach. 



86 corallina, Risso. 

 Maia, Lamarck. 



87 squinado, Rondelet. 



88 verrucosa, H. M. Edw. 

 Herbstia, H. M. Edwards. 



89 condyliata, H. M. Edw. 

 Chionoecetes, Kroyer. 



90 phalangium, Fabricius. 

 Hyas, Leach. 



91 araneus, Linn4. 



92 coarctatus, Leach. 



93 var. latifrons, Stimpson, P. 



94 lyratus, Dana, P. 

 Acanthonyx, Latreille. 



95 lunulatus, Risso. 

 Epialtus, H. Milne Edwards. 



96 productus, Randall, P. 

 Pugettia, Dana. 



97 gracilis, Dana, P. 



= P. Lordi, Bate. 

 Anamathia, S. J. Smith. 



98 Rissoana, Roux. 



99 *Agassizii, S. J. Smith. 

 Oregonia, Dana. 



100 gracilis, Dana, P. 



Euprognatha, Stimpson. 

 roi rastellifera, Stimpson. 



Ergasticus, A. M. Edwards. 



102 Clouei, A. M. Edw. 

 Collodes, Stimpson. 



103 *robustus, S. J. Smith. 



104 depressus, A. M. Edw. 

 Scyramathia, A. M. Edwards. 



105 *Carpenteri, Norman. 

 Lispognathus, A. M. Edwards. 



106 *Thomsoni, Norman. 

 Inachus, Fabricius. 



107 dorsettensis, Pennant. 



108 thoracicus, Roux, 



