1851.] 247 The Committee to which was referred Mr. Dana's communication, reported in favor of its publication in the Proceedings. Conspectus Crustaceorum qua in Orbis Terrariim circumnavigatioiie, Carolo Wilkes e Classe ReipubliccB Faderatae, Dace, lexit ct descripsit J. D. Dana. Descriptio Familiarum Subfamiliarum Generorumqne Crustaceorum Grapsoi-deorum in Ephemeride Scientiarum Americana Sillimani, vol. xii, p. 283, anno 1851, auctore edita. Synopsis brevis Familiarum et Subfamiliarum sequens : CRUSTACEA GRAPSOIDEA, (Cyclometopa, Edwardsii.) 1. ArTICULUS MaXILLIPEDIS ExTERNI 4tUS ANGULO 3t1I INTERNO ARTICULATL'S. Fam. I. GoNOPLACiDvE, vel Grapsoidea Cancridica. Gen. Eucrate De Haan, Curtonotus De H. {P seudorhomhila, Edw.), Gonoplax Leach. 2. Articulus Maxillipedis externi 4tus angulo 3tii interno non articulattjs. Fam. II. MACROPHTHALMIDiE. Sub-fam. 1. Macrophthalminae. Gen. Cleistostoma) De H., Maeropkthalmus, Latr. Subfam. 2. Ocypodinae. Gen. Gela.iimus, Latr., Helacins, Dana {Gelasimum cordiformem amplectens), Ocypoda, Fabr., Scopimera, De H. Subfam. 3. Dotinae. Gen. Doto, De H. Fam. III. Grapsid^. Subfam. 1. Grapsinae. Gen. Pseudograpsvs, Edw., Eriockeir, De H. (Utica, White), Platyiiotus, De H., Brachynotus, De H., Trichopus, De H. {Varuna, Edw.), quorum maxillipedibus externis vix hiantibus ; Grapsus, Lamk., Gonio-grapsus, Dana (Graps. cruentatum, messor, etc., amplectens), Fla7ies Leach {Nau-tilograpsus, Edw.), irewj^ra^s?^^, Dana {Cyclograpsus partim, Edw.), Cyrto-grapsus, Dana, maxillipedibus externis rhomboidice hiantibus. Subfam. 2. Sesarminae. Gen.,Sesarma, Say {Pachysoma, De H.), Sarmatium, Dana, quorum, articulo maxillipedis externi 3tio apicem rotundato ; Cyclograp-sus, Edw. (Gnathochasmus, M'Leay), Cliasmagnathus,Y>Q H., Helice, DeH., quorum articulo maxillipedis externi 3tio apicem truncato et ssepe excavato. Subfam. 3. Plagusinae. Gen. Acanikopus, De H. {Plagusiam clavimanam amplect), Plagusia, Latr. Fam. IV. Gecarcinid^. Subfam. 1. Ucainae, Gen. TJca, Leach, Gecarcinucus , Edw., Cardisoma, Latr. Gecarcoidea, Edw. Subfam. 2. Gecarcininae. Gen. Gecarcinus. Fam. V. PinnotheridjE. Subfam. 1. Pinnotherinae. Gen. Pinnothera, Latr., Fabia, Dana, Xenoph-thalmzis, White, Xanthasia, White, Pinnixa, White, Pimiotherelia, Lucas. Subfam. 2. Hymenicinae. Gen. Hymenosoma, Leach, Hallcarciiius, White, HyTfienicus, Dana, Elamena, Edw. Fam. VI. MvcTiRiDiE. Genus Myctiris.
Crustacea Grapsoidea, (Cyclometopa, Edwardsii): Conspectus Crustacearum quæ in Orbis Terrarum circumnavigatione, Carolo Wilkes e classe Reipublicæ Fœderatæ Duce, lexit et descriptsit J. D. Dana
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