FllOiX THE GULF OF GUINEA. Ii3 



Antcnnules in the female provided with numerous apical setce of moderate length (fig. 51-). 

 The last joint of the male antennule is ahruptly curved and furnished witli a dense sub- 

 apical fascicle of short hairs, besides several terminal setre, one of which is of considerable 

 length and much longrr than the others ; tentacle very slender and scarcely reaching to 

 the extremity of the antennule. 



Secondary bninch of the male antennae nearly two thirds the length of the natatory 

 branch and furnished with two apical setae — one extremely long and one about two fifths 

 the length of the other. The antcnnal hook, which is sliglitly dentate on the inner 

 margin at the distal end, carries one short seta and two elongate ones on the exterior 

 edge, immediately behind the geniculation (fig. 55). 



KaUtut. Lat. 19' 2" S., long. T 19' 0" E. This is the nearest observed position to 

 where the material containing specimens of this sjiecies was collected. It was a surface 

 gathering, collected at 8.45 p.bi. ; the position recorded was taken about 40 minutes 

 earlier on February 2nd. 



The drawings of the side and dorsal views are from two specimens which differed some- 

 what in size. The length of the spines at the extremities of the dorsal margin varies in 

 different specimens. 



Haloctpris punica, n. sp. (PL XV. figs. 7, 8, 39, 40.) 



Shell (male) robust, subcentrally gibbous. Outline as seen from the side : — Dorsal 

 margin sinuated ; ventral margin slightly convex, immediately posterior to the subcentral 

 gibbosity, then bending up posteriorly in a flattened curve to a little below the horizontal 

 middle line of the shell ; thence the posterior extremity recedes upward in a gentle 

 slope to the dorsal margin, with which it forms a bluntly-rounded obtuse angle ; the 

 anterior margin is boldly convex below the notch, then evenly and gently rounded 

 inferiorly, where it merges into the ventral margin. Greatest height fully eqiial to half 

 the length. Beak prominent, stout. Seen from above, broadly and rather irregularly 

 ovate; greatest breadth, in front of the middle, equal to about half the length ; posterior 

 extremity bluntly rounded ; anterior end subacute. Antennules furnished with nine 

 apical seta?, the two inner ones abrujitly twice geniculated at the base ; two of the outer 

 rather longer than the others, and bearing a double row of small spiniform teeth near 

 the middle ; tentacle .slender and extending considerably beyond the apex of the anten- 

 nules. Secondary branch of the antennae short and stout, basal part dilated. The upper 

 margin with two processes — one narrow and tooth-like, the other larger and bearing two 

 small spines ; apical joint furnished with two terminal elongate setae, three small sub- 

 marginal filaments, and a small hook ; the hook has the inner margin at the distal end 

 slightly crenate or toothed. Several of the plumose seta^ of the natatory brancli are 

 thickened or spatulate at the extremity. Length "77 mm. 



Habitat. Station 9 (lat. 3' 0' 8" N., long. 7' 43' 0" W.), 50 fathoms, in a tow-net 

 gathering, collected January 10th. A few specimens only were obtained. 



