CAPRELLIDEA. g21 



subcequis, paulo oblongis. Caput rotundatum, segmento proximo 

 duplo longius. Antennce lmce pubescentes, dimidio corporis paulo 

 longiores et inferioribus plus duplo longiores, articulo Irno parce bre- 

 viore quam 2dus,flagello vix bremore quam basis, 10-12-articulato. 

 Antennce 2dce parvulce, basi lmarum multo breviores. Branchice ob- 

 longce. Manus secunda oblonga, palmd rectiusculd, pubescente, versus 

 bami prominuld. 



Body rather slender, second, third, fourth, and fifth thoracic segments 

 subequal, somewhat oblong. Head rounded, twice as long as next 

 segment. Superior antennae pubescent, rather longer than half the 

 body, and more than twice as long as the inferior, first joint a little 

 shorter than second ; flagellum ten to twelve-jointed, hardly shorter 

 than the base. Inferior antennae much shorter than base of supe- 

 rior, quite short ciliate. Branchiae oblong. Hand of second pair 

 oblong; palm pubescent, nearly straight; a prominence towards 

 base. 



Plate 55, 1ig. 3, animal, enlarged. 



Rio Janeiro, in ten to twelve fathoms; taken from the anchor with 

 the preceding. 



Length, half an inch. The rounded front of the head is peculiar ; 

 so, also, the small size of the inferior antennae, which are not half as 

 long as the superior, while the flagellum of the superior antennae is 

 about half the whole organ. The head, moreover, is twice as long as 

 the first thoracic segment. The inferior antennae are about as long as 

 first two basal joints of the superior. The first basal joint of the supe- 

 rior is but little shorter than second, and about equal to third. Hand 

 of first pair of legs very small, less than half the length of second pair. 

 Branchial appendages subovate. Fifth thoracic segment is but little 

 shorter than the preceding. 



In the specimen figured, the second pair of legs is attached below 

 to the second thoracic segment near its middle, and not anterior to it. 



The species may possibly be a variety of the dilatata. 



206 



