126 Scientific Intelligence. 
1l. Hiatus orbilg internus processu basis antenne externa occupatus, 
articulum 2dum occludens. 
G. 1. Emisus, Leach.* 
9. Hiatus orbitae internus basi antenne externe occupatus, articulo 
2do non occluso. 
1. Regio carapacis postica convexa. 
G. 2. CanPiLODES, Dana.—Carapax latus, nudus, margine antero- 
laterali crassé rotundato. Pedes 8 postici subcylindrici, nudi. 
Liomerce habitu similis. 
G. 3. Zozxwus, Leach.t—Carapax mediocriter latus, margine 
antero-laterali tenui. Pedes 8 postici valde compressi, cristati 
aut subceristati. |. Atergat? habitu similis. 
2. Regio carapacis postica fere plana. 
a. Carapac versus margines frontalem antero-lateralemque curvatim. declivis. 
G. 4. AcropEs, Dana.j—Pedes S8 postici non cristati. Acte 
aspectu similis. Articulus maxillipedis externi 3tius apicem vix 
excavatus. 
G. 5. Daina, De Haan.S—Pedes 8 postici non cristati. Articulus 
maxillipedis externi 3tius apice valde emarginatus. 
b. Carapax versus margines frontalem antero-lateralemque vix declivis. 
G. 6. Curononivs, Leach.|—Carapax plus minusve transversus 
Articulus antennze externze Imus oblongus frontem bene attin- 
gens. Articulus maxillipedis externi 3tius subrectangulatus. 
Xantho aspectu similis. 
G. 7. Piropnius, Dana.—Carapax paulo transversus. Articulus 
antennz externa abbreviatus, processum fronts oblongum. at- 
tingens tantum.  Paraxantho aspectu similis. 
G. 8. Cvcrnopnivus, Dana.—Carapax parce traasversus. Articulus 
antennz externz oblongus frontem bene attingens. Articulus 
maxillipedis externi 3tius triangulatus, latere interiore brevissimo. 
G. 9. Cxuo, De Haan.f|—Carapax non transversus, fere orbicu- 
latus, disciformis. —Antennis CAlorodio affinis. 
* Part of the species (the typical) have the arm long projecting, and a broad 
form somewhat like Cancer. Another part, quite different in habit, have a short 
arm as in Actzodes, and graduate into Actzodes. "The latter may well be named 
Emrsoprs. 
t Zozymus of Leach and ZZ£gle of De Haan have the same species as type, the 
Z. «neus, and De Haan makes the cristate character of the 8 posterior legs a generic 
character. We follow him in this respect, though adding the character dependent 
on the spoon-shape of the fingers, as done by Leach. 
i Includes Zozymus tomentosus and the allied, in which the 8 posterior legs are 
not cristate. "The species are closely like Actzeze except in the fingens 
8 Faun. Japon. 18; ZLagostoma, Edwards, Crust. i, 386. 
|| CMorodius of De Haan (F. Jap. 13) of subsequent date, is Bye. with 
AAtelecyclus of Leach. 
«4| Faun. Japon. 22. 
