404 CRUSTACEA. 



truncato vel arcuato. Tarsi lati, postici 4tis vix angustiores. Antennae extern* 

 breves, articulo 2do processu auriculiformi instructo, 3tio cordiformi. Articulus 

 maxillipedis externi 3tius 2do parce brevior. Sternum inter pedes 2doa lineare. 



G. 3. Ranilia, Edwards.— Carapax antice non angustior, fronte arcuato. Pedes 

 uti in Ranina. Antennas extern* basi processu auriculiformi non instruct*, 

 articulo 3tio crasso, cylindrico. Articulus maxillipedis externi 3tius 2do longior. 



G. 4. Notopus, De Eaan* — Carapax antice non angustior, margine antico lato, 

 paucidentato, superficie fere l*vi. Pedum 2dorum 3tiorum otorumque tarsi 

 angusti, pedibus 5tis parce minoribus. 



G-. 5. Lyreidus, Be Haan.-f — Carapax antice latera convergens, margine antero- 

 lateral! valde obliquo, rectiusculo, margine antico angustissimo. Pedum 2dorum, 

 3tiorum 5torumque tarsi angusti, pedibus 5tis parvulis, fere filiformibus. 



G. 6. Cosmonotus, White.% — Carapax plerumque uti in Li/reidu. Pedes postici 

 4tis parce minores. 



Ranina serrata, Lawk. 

 Sandwich Islands. 



Cancer 7-aninus, Linn., Mus. Lud. Ulr., p. 130. 



Ranina serrata, Lamk., Syst., 256, and Hist, dcs An. sans Vert., v. 225. 

 Ranina dentata, Latreille, Encyc. x. 268; Edwards, Crust., i. 194, pi. 21, figs. 

 1-4, and Cuv., pi. 41, f . 1 ; De Haan, Faun. Japon., p. 139, pi. 34, 35. 



Section II. ANOMOURA MEDIA. 

 Subtribe IV. HIPPIDEA. 



The genera of Hippidea, thus far described, are distinguished as 

 follows by Edwards : 



ALBUNiEA, Fa br,~ Antennas externa breves. Pedes antici subcheliformes. 

 Albunhippa, Edu.$- Antennae extern* long*. Pedes antici subcheliformes. 



* Faun. Japon., 136, pi. 35. 

 f Faun. Japon., 136, pi. 35. 

 X Voy. Samarang, 60, pi. 13, f. 3. 



§ Arch, du Mus. d'Hist. Nat., ii. m.-B^karlpoda, Dr. J. Randall, Jour. Acad. 

 ^Nat, feci. Philad., vm. 130. 



