290 



DEC A POD A. 

 MACROURA. 



PALjEMONIDJL. 



THOMPSON'S HIPPOLYTE. 



Hlppolyte Thompsons. Milii. 



Specific Ct/aracter. Rostrum straight, deep, acute, continuous with a slight 

 carina, which extends from near the posterior margin of the carapace ; furnished 

 above with eight teeth, of which four, more distant than the others, are situated 

 on the carapace ; beneath, with three minute teeth near the apex. 



THE carapace is of moderate length, the surface slightly 

 scabrous : a carina commences at about two-thirds back- 

 wards, and extends forwards to form the upper portion of 

 the rostrum, which, with the carina, is furnished with eight 

 teeth, directed forwards, of which four are situated on the 

 carapace, and are more distant from each other than those 

 on the rostrum itself; the inferior portion of the rostrum 

 has three minute teeth placed towards the apex, which is 

 acute and simple. The scale of the external antennse ex- 

 tends to more than half the length of the internal, and the 

 latter have the filaments slightly curved downwards, and 

 moderately thick. The anterior pair of feet are of moderate 



