CANCROIDEA. 



183 



though neat aspect. The species is broader than the Halimede fro- 

 gifer of De Haan ; the ratio of the length of the carapax to the 

 breadth, in which, according to De Haan's figure, is 1 : 1-16. The 

 antero-lateral teeth are somewhat reflexed, and T is the largest, and 

 they are all scabrous. The carpus and hand are armed seriately with 

 oblong tubercles, which are rough with spinules. The tarsus is spinu- 

 lous near the extremity; but more posteriorly, the spiuules are setae 

 more or less setulose, and the hairs of the legs have a rough look, 

 from their setulose character. 



Family CHLOEODIN^. 



The genera in this family run parallel with those of the subfamily 

 Xanthine. Thus Zozymus is allied to Atergatis, Carpilodes to Car- 

 pilius or Liomera, Etisus to Cancer (in part), ActaBodes to Aetata, 

 Chlorodius to Xantho, Pilodius to Xanthodes, Cyclodius to Medaeus. 

 In some instances it is difficult to decide whether the fingers should 

 be described as pointed or excavate, the transitions are so gradual. It 

 is obvious, therefore, that the allied genera of the two groups might 

 be arranged in a single group. Yet the relations of the series are best 

 shown by placing them in distinct divisions, so that they may be 

 viewed in their true parallel relations. 



Etisus is the only known genus in this family, in which the move- 

 able part of the outer antennae is excluded from the orbital hiatus, a 

 process from the first joint filling this hiatus. 



.' 

 Genus ETISUS, Leach. 



In the following species of this genus, the carapax is more or less 

 areolate, the medial and lateral regions being subdivided, and in some 

 instances also the posterior. The lateral areolets become less distinct 

 with age, and in the adult Etisus levimanvs, are indicated only by 

 undulations of the surface, although well marked in an individual not 



