44 CRUSTACEA. 



portions of the claws, and the number of their caudal segments, are 

 removed from them, as well as from the other anterior subgenera, 

 by the insertion of their lateral antennae under the snout, and their 

 approximation to the fossulae lodging the intermediate ones, being 

 closer than to those which receive the ocular pedicles(l). 



In the two following subgenera the ocular pedicles are short or 

 moderate, as well as in the preceding ones. But the claws, even 

 those of the males, are hardly thicker than the following feet. The 

 tail always consists of seven segments. In the 



Maia, Leach, 



The second joint of the lateral antennae seems to arise from the 

 internal canthus of the ocular fossae. The hand and the joint which 

 precedes it are nearly of the same length. The shell is ovoid. 



This subgenus established by Lamarck, and originally consisting 

 of a great number of species, comprises, at present, according to 

 the method of Dr Leach, but one, the Cancer squinado, Herbst, XIV, 

 884, 5, lvi; Inachus cornutus, Fab. It is very common on the coast 

 of France and in the Mediterranean, where it is called JLraignec de 

 mer. It is one of the largest of the European Crustacea, and the 

 Maia of the ancient Greeks, figured on some of their coins. They 

 attributed great wisdom to it, and considered it as sensible to the 

 charms of music. 



Micippe, Leach. 



The first joint of the lateral antennae curved, dilated at its supe- 

 rior extremity into a transverse and oblique blade, closing the ocular 

 fossae; the ensuing joint inserted under its superior margin. The 

 shell, viewed from above, appears widely truncated before; its an- 

 terior extremity is inclined, and terminates in a sort of clypeus or 

 dentated rostrum(2). The 



Stenocionops, Leach, 

 Is distinguished from all the other subgenera of this tribe by 



(1) Maia taurus, Lam.; Cancer cornudo, Herbst., lix, 6. 



N.B. The genus Jimathia of M. P. Roux, Hist, des Crust, de la Mediterr., &c, 

 liv. I, does not differ from my Pericera it even appears to me to have the same 

 type. The Lithographic plates which accompany this work are distinctly and 

 faithfully executed. 



(2) Cancer cristatus, L.; Rumph., Mus., VIII, 1, the male. Cancer phy lira, 

 Herbst.. lviii, 4; Desmar. Consider., XX, 2. 



