88 STALK-EYED CRUSTACEA 



external antenna; very much enlarged, with short spines 

 at the distal extremity. First pair of legs often large, 

 with the palm compressed and more or less dilated. 



2. Mithrax (Mithrax) spinosissimus. 



MitJirax spinosissimiis . . . Milne Edwards, Gibbes, 



Stimpson, Desbonne 

 ' and Schramm, Von 

 Martens. 



Maia spinosissima .... Lamarck. 



The carapace, contracted in front, is covered with 

 spines more or less elongated, but smooth in the space 

 which these points have between them, and ornamented, 

 as well as the legs, with a multitude of stiff hairs ; with 

 age some of the spines disappear. The antero-lateral 

 borders of the carapace are armed with five or six large 

 spines, of which the two first are bifurcated. The superior 

 orbital border has three or four spines, of which the anterior 

 is very strong and directed forwards. The rostrum is 

 formed of two diverging spines, directed forwards. The 

 basal joint of external antennae terminates in two spines, 

 of which the internal is very long; the third joint is very 

 short. Legs very spinous. Palm of hand with spines on 

 upper edge. 



Colour, red. 



Range. — Barbados, Guiana, Florida, Guadaloupe, 

 Cuba. 



3. Mithrax (Mithrax) cornutus. 



Mithrax coriiutns . . . Saussure, A. Milne Edwards, 



Miers. 



The body and the legs are covered with a short 

 pubescence resembling cloth. The carapace is ovoid 



