26 



prosepistoina is continuous with the forehead in the middle and sepa- 

 rated from it on both sides by a transverse, incomplete, ])rieocnlar cut. 



Tmncus: first segment with the antero-median tubercle hardly 

 }ierceivable; coxopodites distinct on the entire lengtii of the edge of 

 the segment, ('oxopodite of the second segment hidden under the 

 bent side part of the segment. 



Cauda: tiie lateral parts being nearly folded underneath, the 

 hind edge of segments 3—5 seems straight from a dorsal view. 

 Pleotelson flat, with curved sides and a blunt, rather rounded ajjcx. 



Uropodes: basis with a large oblong processus; endoi)odite reaching 

 to twothirds the length of tiie pleotelson ; exopodite small , placed at 

 the top of the basal processus. 



Color: dark brown, llagcllum whitish. 



Long. 5 m. m. Lat. 2 m. m., (much decreasing backward)." 

 Patria: St. Vincent?, open swampy land, under rubbish, 

 S. end of the Island. (Mus. Londinense). 



(Description copied after Dollfus). 



