nnj CRUSTACEA. 



Genus TRICHODACTYLUS. 



TeichodACTTLUS PUNCTATUS (?), Eydoux and Souleyet. 



T. quadrato affinis. Punetahts. Marge carapacis antero-lateralis mi- 

 nute bi-emarginatus, non reflexus. Frons lev tier excavatus. Digiti 

 plerumque brevissime tomentosi, eoque tarsi* shinies. Articulus rnaxil- 

 lipedis extemi otius 2do vix brevior. 



Near T. quadratus. Punctate. Antero-lateral margin of carapax 

 minutely bi-emarginate, not reflexed. Front slightly excavate. 

 Fingers mostly tomentose like the tarsi. Third joint of outer max- 

 illipeds but little shorter than second. 



Bio Janeiro. 



Length of carapax, thirteen lines; greatest breadth, fifteen lines; 

 ratio of length to breadth, 1 : 1*15. This species may be the quad- 

 rahts; but that species, according to the figure in Edwards's Cuvier, 

 Plate 15, represents the margin entire. The punctate character is 

 a peculiarity also of the quadratus. 



III. CYCLIKEA. 



Pedes postici non natatorii. Antennae externa obsolete?. JRamus maxilr 

 lipedis lmi internus simplex. Carapax august us vel suborbicularis. 



Not natatory. Outer antennse obsolete. Inner branch of first maxil- 

 lipeds simple. Carapax narrow or suborbicular. 



The singular species here included, has much the appearance of 

 an Atelecyclus, and its relation to that group is suggested by Lucas. 



