NA Zoology. . 287 
E e Fax. IlL GRAPSIDA — 
365» 
... Oculi tertià parte latitudinis carapacis breviores. Carapax subqua- 
"dratus, sepius depressus, lateribus aut rectis aut arcuatis. Ántennz 
interne transverse. Articulus abdominis maris 9dus sterno postico 
sepius vix angustior. Articulus maxillipedis externi 8tius sive inorna- 
tus sive costá obliquá ornatus. Palatum lineá elevatá vie efferentis 
limite instructum. 
1. GRAPSINJE.—Antennz internz fronte tectz. Articulus maxilli- 
pedis externi 3tius costá obliquá in 2dum productá non notatus. 
l. Maxillipedes externi viz. hiantes. 
G 1. PsEupocnaPsus, ÉEdw.—Articulus maxillipedis externi 3tius 
orbiculato-cordatus, aut subquadratus, 2do brevior. Frons 
dimidio latitudinis carapacis vix brevior. Carapax lateribus 
arcuatus. 
G. 2. EniocnzgiR, De H.*— Articulus maxillipedis externi 8tius uti 
in Pseudograpso. Frons dimidio latitudinis carapacis multo bre- 
vior. Carapax subpolygonatus. 
G. 3. PrnaATrvNorus, De H.t—Articulus maxillipedis externi 3tius 
2do longior, margine postico valde obliquo. 
G. 4. 'TRicHoPus, De H.i—Articulus maxillipedis externi 3tius 
latior quam longior, extus dilatatus. — Pedum articuli 5tus 
6tusque posticorum compressi denseque ciliati. 
2. Macillipedes externi rhomboidici hiantes. 
G. 5. GnaPsus, Lamk.—Carapax transversim lineolatus, lateribus 
plus minusve arcuatis. Frons dimidio latitudinis carapacis bre- 
vior. Antennae externz juxta frontis latera oblique exsertz. 
Tarsi spinulis armati. 
G. 6. GoNiocnarsus, Dana.S—Carapax transversim  lineolatus. 
lateribus rectis, postice szepe convergentibus. Frons dimidio 
latitudinis carapacis longior. Antenne externe sub frontis mar- 
gine sepius exseriz. — T'rsi spinulis armati. a 
* Faun. Japon., p. 32, 59.—The genus Utica of White, (Ann. Mag. Nat. Hi: 
206, and Crust. Voy. Samarang, 52, pl. 13, fig. 6,) appears to have the ess: 
acteristics of Eriocheir, and like Eriocheir differs but little from Pse TAps 
The front is narrow, the form subpolygonal, and it lives like E. Japonieus, in fre 
water. The bushy hair on the hand of the J apan species is not necessarily i. je 
character. The name Eriocheir is therefore unfortunate, and it would be bete for 
the science to substitute the name given by White. 
The E. penicillatus of De Haan, (p. 60, "pl. 11, f.6,) appears to be a true Pseu- 
dograpsus. 
f Faun. Jap., p. 34. 
BRaAcHYNorus is the name of another genus by De Haan based on a Mediterranean 
species described by Risso, Hist. Nat. de l'Eur. Merid, v, 13. The male abdomen 
ja but 4-jointed, ie female ^-jointed ; 2d and 3d joints of the outer maxillipeds of 
equal length, and the 3d truncate at either extremity. 
i Faun. Jap. p. 32.— Varuna of Edwards, Crust. ii, 94. 
$8 In part, G'oniopsis of De Haan, F. Jap., p. 38, and Pachygrapsus of Randall, 
J. Acad. Nat. Sci, Philad., viii, 126. 
