ORDER DECAPOD A. 175 



leriorly, denticulated or spiny on the sides. The eyes are 

 situated near the middle of the forehead, and carried on short 

 pedicles. 



Dromia, Fah., 



Have the four posterior feet inserted on the back, and ter- 

 minated by a double hook ; the testa suborbicular, or almost 

 globular, gibbous, and woolly, or well furnished with hairs. 

 {Cancer dormia, Linn.) 



Dynomene, Latr., 



In which the two posterior feet, much smaller than the others, 

 are alone dorsal, and as it appears to us, imperfect. The 

 testa is widened almost into the form of an inverted heart, and 

 truncated posteriorly, like that of the last quadrilatera, and 

 simply furnished with hairs. The ocular pedicles are longer 

 than those of Dromia. {Dynomene Jiispida, Desmarest.) 



The last notopeda differ from the preceding, in that all the 

 feet, with the exception of the claw s, are terminated like fins, 

 and from all the other brachyura, in having the tail extended. 

 Such are. 



Ran IN A, Lam. 



Their testa is elongated, proceeds narrowing from front to 

 rear, and has generally the form of an inverted triangle, with 

 the base denticulated. The ocular pedicles are elongated. 

 The lateral antennae are long and advanced. The external 

 jaw-feet are equally elongated, narrow, and with the third 

 articulation contracted into a point towards its extremity. 

 All the feet are very much approximate, or almost contiguous 

 at their origin, and beginning from the fourth pair, they 



