g . CRUSTACEA. 



curvatim dedivis. Digiti instar cochlearis excavati. Pedes 8 jpostici 

 articulo 3tio non cristati. 



Carapax posteriorly flat or nearly so, towards the anterior and antero- 

 lateral margins curvately inclined. Fingers excavate spoon-like. 

 Eight posterior feet not having the third joint cristate. 



These species are like Actseae in form and aspect, but the fingers 

 are those of the Chlorodinse. The front and sides curve downward, 

 and the outline in a vertical view is a regular semicircular arc. More- 

 over, the species are often granulous as in Actaaa, and the two genera 

 pass into one another by insensible gradations. The granulous species 

 graduate into those that are nearly smooth, or are granulous only ante- 

 riorly and laterally, and also, into other species that have a cellular 

 surface. Some species have the fourth or fifth joints of the posterior 

 legs more or less cristate, but not the third, like the Zozymi. 



This genus includes Zozymus in part, of Edwards. The Z, tomentosus 

 may be considered its type. 



1. Carapax laivis sive vix granulatus, nee tomentosus. 

 ACT.EODES AREOLATUS. 



Carapax bene areolatus, leevis, areola 2 M simplice, 1R,ZR discretis, 1 P 

 vix circumscripta; niargine front all fere recto, emarginato ; margine 

 antero-laterali h-dentato, dente quinto parce rninore. Pedes antici 

 cequi, manu extus parce rugatd, digitis canaliculatis, 2-3-dentatis, 

 digito mobili valde uncinato. Pedes postici panlo nudi, articulis com- 

 pressis, tertio supra fere acuto. 



Carapax areolate, smooth, areolet 2 M simple, 1 R and 3 R separate, 1 P 

 hardly circumscribed ; frontal margin nearly straight, emarginate, 

 antero-lateral margin five-toothed, fifth tooth the smallest. Ante- 

 rior feet equal, outer surface of hand hardly rugate, fingers chan- 

 neled, 2-3-dentate, moveable finger strongly uncinate. Posterior 

 feet nearly naked, joints compressed, the third nearly acute above. 



Plate 9, fig. 8 a, outline of antero-lateral margin, enlarged; b, hand. 





