168 CLASS CRUSTACEA. 



of their peduncle as long or even longer than the preceding, 

 and terminated by a long and setaceous stem. They approach 

 micippus. Such are 



Kalimus, Latr.^ 



Two species, one very near the Cancer superciliosus of Lin- 

 naeus. 



Those vthich form the two following subgenera have the 

 ocular pedicles susceptible of complete retraction into their 

 fossets, and protected posteriorly by a projection in the form 

 of a tooth or angle of the lateral edges of the testa ; the second 

 articulation of the peduncle of the lateral antenna? is much 

 larger than the following ; they are terminated by a very short 

 stem, in the form of an elongated stylet. 



Hyas, Leach, 



Have the lateral edges of the testa very much dilated, in the 

 manner of an auricle, behind the ocular cavities, which are 

 oval, and tolerably large ; the external side of the second arti- 

 culation of their lateral antennae compressed and carinated, 

 and the ocular pedicles capable of being entirely discovered, 

 when the animal raises them up. The body is subovoid. 

 {Cancer araneus, Linn.) 

 In 



LiBiNiA, Leach, 



The ocular fossets are very small, and almost orbicular; 

 the ocular pedicles are very short, and admit but of little pro- 

 trusion. The second articulation of the lateral antenna is 

 cylindrical, and but little or not at all compressed. The body 

 is almost globular or triangular. 



We shall unite to these the Doclcsa and Egeria of Dr. 

 Leach. 



