Zoology. 129 
k. 
— X. LUPINJE.—Sutura sterni mediana segmenta tria intersecans. Palati 
... colliculi prominentes. 
l. Pars antenne externe mobilis hiatu orbile non occlusa, orbitá 
jacendo aptata. 
G. 1. Scyrna, De Haan.*—Valde latus et crassus, marginibus 
anterioribus simul sumtis bene arcuatus, antero-laterali longiore 
quam postero-lateralis. Pedes antici breviores, crassissimi, manu 
valde tumidá, non angulatá vel prismaticá. 
G. 2. Lupa, Legch.t— Valde latus, marginibus anterioribus totis 
4 . simul sumtis bene arcuatus. Manus elongaté trigona aut pris- 
matica, costata. : 
|... G. 8. Aurnurrair£, De Haan,$ Dana.—Angustior. Margines fron- 
ECC talis antero-lateralisque angulo convenientes, antero-laterali raro 
yia breviore quam postero-lateralis. Manus elongata, prismatica. 
F Basis antennz externz crassus, hiatu orbitze parce angustior. 
G. 4. CanvPa, JDana.—'ransversus. Margines frontalis antero- 
lateralisque angulo convenientes, fronte recto, emarginato. Basis 
antennz: externa; subcylindricus, hiatu orbitze multo angustior. 
9. Pars antenna externe mobilis hiatu orbit omnino per basis proces- 
sum occlusa, orbitá plus minusve remota. 
G. 5b. TuaramrirA, Latr.—Latus. Frons dimidio latitudinis cara- 
pacis longior; margo antero-lateralis longitudinalis. Articulus 
antennz externe lmus prelongus, 2dus orbitá remotissimus. 
Pedes antici longi, manu elongatá. 
G. 6. Cnanvspis, De Haan, Dana.S—Angustior. Frons dimidio 
latitudinis carapacis brevior; margo antero-lateralis obliquus.. 
Articulus antenn; externe lmus paulo oblongus, 2dus orbitá 
paulo remotus. Pedes antici longi, manu elongatá. 
G. 7. LissocanciNus, White.|| —Suborbiculatus, laevis, subporcel- 
lanus. Articulus antennz externe lmus brevis, fere longitudi- 
nalis, articulo sequente orbitá parce remoto. Pedes nudi ; antici 
breves, brachio ultra carapacem vix saliente, manu perbrevi. 
9. ARENJEINZE.—Sutura sterni mediana segmenta. tria intersecans. 
Palatum colliculo utrinque non divisum. Ramus maxillipedis 1mi 
internus ad apicem late transversim triangulatus lineamque media- 
. nam fere attingens. 
* Faun. Japon. 11. 
t Neptunus, Pontus and .Achelous of De Haan, (Faun. Japon., 8, 9) the distine- 
tions between which genera appear not to be sustained. 
f Faun. Japon. 8. Includes, as here adopted, the Lupa of De Haan, which di- 
vision he restricts to the Lupa forceps (Edw. Crust. i 456) The ZLwupocyclus of 
Adams and White, (Crust. V oy. Samarang, 4^1, pl. 12, f. 4,) appears to be identical 
with Amphitrite. jns. 
8 Fauna Japon. 10. Includes both Charybdis and Oceanus of De Haan, which 
divisions shade into one another by imperceptible gradations, and are not distin- 
guished by any important characters. Corresponds to the * Thalamites Hexago- 
nales" of Edwards. 
| Crust. Voy. Samarang,45. "We have taken the generic characters from a species 
collected by us, in connection with the description by White. 
SECOND SERxes, Vol. XI, No. 31.—July, 1851. "e 17 
