36 
A. 0. WALKER. 
Lower antennae : First joint stout, about one-third of the second, which is shorter 
than the third ; flagellum subequal to the second joint of the peduncle, five-jointed. 
Both pairs of antennae are sparsely setose. 
Mouth organs normal ; the mandibular palp reaching beyond the first joints of 
the antennae. The outer plates of the maxillipeds have spine-teeth only on the distal 
end of the inner maroon. 
First gnathopods: Side-plates oblong, rounded below, deeper than wide. First 
joint narrow, shorter than the fourth and fifth joints united ; wrist subequal in length 
and width to the hand, hind margin convex, flattened near the middle ; hind margin of 
the hand evenly convex, palm spinulose. Dactylus slender. 
Second gnathopods: Side-plates as in the first pair. First joint widening distally ; 
wrist sub triangular, half as long as the hand, the hind margin subangular and setose; 
hand with the palm subequal to the rest of the hind margin, minutely crenulate, slightly 
convex near the base of the dactylus, then concave to the palmar angle, which is 
rounded, with a spine on the side. Dactylus with two or three teeth near the point. 
First and second perseopods as in F. ergthrophthalmus, but less setose. 
Last three pairs of perseopods increasing in length successively, the third pair as in 
G. nana, Sars ; the fourth and fifth have the hind margin of the first joint convex 
above and almost straight below, with the posterior angle right. The last pair do not 
extend beyond the uropods. 
First and second uropods: Outer rami shorter than the inner and subequal to the 
peduncles. 
Third uropods: Peduncle twice as long as the styliform rami, of which the outer is 
slightly the shorter. All the uropods are sparsely spinous. 
Telson not reaching to the middle of the peduncle of the third uropods, roof-shaped, 
wfith a small notch and spine at the distal end ; when flattened and seen from above it 
appears to be triangular. 
Length 6 mm. 
O 
Male :— 
Upper antennse not reaching the end of the peduncle of the lower, otherwise as in 
the female. 
Lower antennse almost as long as the whole animal. 
Second gnathopods: First joint stouter than in the female, the front margin 
terminated by a blunt tooth ; wrist very short, hind margin a little produced, sub- 
angular, setose ; hand widening distally, front margin almost straight, hind margin 
rather longer than the palm, rather convex, with four fascicles of setae terminating in a 
strong tooth forming the palmar angle; palm almost transverse, with a strong tooth 
behind the palmar one and an irregularly toothed and setose space between it and the 
base of the dactylus, the point of which reaches to the palmar angle, but is carried over 
the side of the hand. 
Length 6 mm. 
O 
