708 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [8] 



cephalothorax, short furca, well-developed terminal setae, and seven- 

 teen-jointed antennas, reaching the abdoinen, with acute ridge on the 

 three distal joints, that on the last serrate. (PI. in, fig. 14.) 



Total length 1.8 mm , cephalothorax l.l mm long, .G3 m,u wide, and AS mux 

 high ; abdomen and furca ,7 mm long, equaling the longest bristle. 



Basal segment of antenna without circlet of minute hairs, the second 

 segment short, the third shorter, the fourth equal to the second and 

 third together, the fifth a little longer than the second, the sixth equal 

 to the third, the seventh slightly longer than the fifth and sixth to- 

 gether ; segments eight to eleven sub-equal, increasing a little in length, 

 twelve to fourteen a little longer, fifteen to seventeen much longer. 

 Antennules with line of delicate hairs inclosing a patch on posterior 

 surface of each segment, elongate oval on air but the proximate, where 

 it is circular. 



Labruin with twelve conspicuous teeth, the second from each end 

 decidedly larger than the others. 



The swimming legs with all the rami three-jointed. The first pair (Pl.n, 

 fig. 10) with the segments of the outer ramus about as broad as long, the 

 terminal segment with one spine and two spine-like setre at tip, two spines 

 without and three sette within; the other segments all with one spine 

 and one seta. The inner ramus with one very stout spine at tip and 

 one very slender seta not longer than the spine, one seta without and 

 three within on the distal segment; the basal segment of this ramus 

 with one seta and the second with two. 



Second pair of legs with two very stout spines and a slender seta at 

 tip of the last segment of the outer ramus, two stout spines without 

 and four setse within. The armature of the inner ramus like that of 

 the preceding. 



Outer ramus of the third pair of legs with two spines and one seta 

 at tip (the inner spine the longer), three spines without and four setie 

 within ; the inner ramus as before. 



In the fourth pair of legs (PI. n, fig. 11), the outer ramus has two 

 spines and one bristle at tip (the bristle shorter than the longer spine), 

 one spine without and four bristles within, the lower of the latter abort- 

 ive. The inner ramus has the last joint slender, truncate, with two 

 stout spines at tip, the outer one the larger, with one seta without and 

 two within. 



The fifth pair of legs (PI. II, fig. 12), are jointed, the basal segment^ 

 two thirds as wide as long, its outer margin straight, its inner, convex 

 and minutely hairy. The distal end is truncate, with a very long seta 

 at the outer distal angle. The second (terminal) segment is about as 

 long as the preceding is wide, lobed in the middle, and tri-setose, the 

 outer seta shorter than the inner, and the latter about half as long as 

 the median. 



Abdomen short, the greatest breadth but twice in length, the furca 

 short and broad, the rami half as wide as long, about as long as the two 



