\ 



CANCROIDEA. 229 



2. OZINiE. — Carapax plus minusve transversus, lateribus non dila- 

 tatus. Digiti acuminati. Antennae internae transversae. Orbita 

 hiatu intemo basi antennas occupato instructa. Abdomen maris 

 7-articulatum. 



1. Articulus antennae externa lmus/rontem bene attingens. 



Gr. 1. Galene, Be Haan* — Carapax transversus, longitudinaliter multo convexus, 



antice declivis. 

 G-. 2. Ozius, Leach. — Carapax transversus, latus, fere planus. 



2. Articulus antenna; external lmus/rontem non attingens. 



Gr. 3. Psetjdozitjs, Dana.f — Carapax transversus, fere planus, latior, margine 



antero-laterali breviore quam postero-lateralis. 

 Gr. 4. Pilumnus, Leach. — Carapax angustus, parce transversus, saepius convexus, 



margine antero-laterali breviore. 

 Gr. 5. Pilumnoides, Edw. et Lucas. % — Carapax angustus, parce transversus, valde 



convexus, margine antero-laterali longiore, bene arcuato, super carapacem postice 



incurvato. 

 Gr. 6. Melia, Latr. — Carapax subquadratus, fere planus, fronte lato, oculis versus 



angulos insitis. Pedes toti graciles. Basis antennae externae cylindrica. 



An genus sequens hie pertinet ? 



Acanthodes, De Haan.§ — Carapax angustus, Pilumno forma affinis, spinis gran- 

 dibus antice armatus. Pedes spinosi. — Species Acanthodes armatus Haanii mag- 

 nitudine portentosus. 



3. ACTUMNINiE. — Orbita Ozinis similis. Digiti instar cochlearis 

 excavati. 



Gr. Actumnus, Dana. || — Carapax paulo transversus, valde convexus, antice laterali- 

 terque curvatim declivis. Articulus antennas externae lmus processum frontis 

 attingens tantum. 



4. ERIPHIN^. — Orbita infra bene clausa, hiatu interno carens, ar- 

 ticulo antennae basali e orbita omnino excluso. Carapax sive paulo 

 transversus sive subquadratus. 



* Faun. Japon., 19. 



f Near Pseudocarcinus, from which it differs in the ridge on the prselabial plate, as 

 well as in its natter form. 



% Crust. D'Orb. S. Am., 21. 



§ Faun. Japon., 20. 



II Very near Actsea, but the praelabial plate or palate is strongly divided by a ridge 

 either side. Besides, the form is much narrower and more convex than in the Actaeae, 

 being subglobose above. 



58 



