636 



long, posteriorly curving spine. Cephalon very large, and carinated dorsally, 

 the carina terminating in front in a large, lamellar, rostriform projection; 

 postantennal corners acutely produced. Anterior pair of coxal plates sub- 

 triangular in form, terminating in an acute point; 2nd pair somewhat larger 

 than the others, and having a lateral lappet. Eyes very large and umboni- 

 form protuberant, pigment dark red. Antennae densely edged posteriorly 

 with delicate bristles; the superior ones rather strongly built, and about 

 equalling in length the body without the urosome, 1st joint of the peduncle 

 short and thick, 2nd more than twice as long, and produced at the end 

 anteriorly to an obtuse projection, 3nd joint somewhat longer than the 2nd, 

 flagellum about the length of the former, and composed of 5 articulations, 

 the 1st of which is much the largest, accessory appendage 3-articulate, with 

 the first 2 articulations subequal, the last one very small. Inferior antennae 

 shorter and narrower than the superior, the last 2 joints of the peduncle 

 each produced at the end anteriorly to an obtuse projection, flagellum much 

 shorter than the last peduncular joint, and composed of 3 articulations. An- 

 terior gnathopoda with the carpus rather large and expanded, being densely 

 setiferous below, propodos shorter than the carpus and scarcely as broad, 

 lower edge terminating in front in a small lobe and, like the upper edge, 

 densely setous, daetylus long and slender, minutely denticulate inside. Pos- 

 terior gnathopoda in female somewhat shorter and stouter than the anterior, 

 basal joint terminating at the end outside in a triangular lappet edged with 

 slender spines, carpus comparatively short and expanded below to a setiferous 

 lobe, propodos rather broad, oval in form, with the lower edge evenly curved; 

 those in male considerably more powerful, with the propodos rather large, 

 oval quadrangular in form, and produced below to 2 distant triangularly 

 pointed projections, daetylus very strong and densely setous. Anterior pairs 

 of pereiopoda small and feeble; the 3 posterior pairs rather strong and much 

 elongated, their outer part being densely clothed with short spines, meral 

 joint about the length of the outer 2 combined, daetylus strong and curved. 

 Uropoda with the rami very narrow and terminating in a sharp point, the 

 outer ones somewhat shorter than the inner, both being, as also the basal 

 part, edged with short spines. Telson somewhat longer than it is broad, and 

 having on either side 2 small bristles, tip narrowly rounded. Body whitish, 

 pellucid, and variegated with irregular patches of a brown and light yellow 

 pigment. Length of female 12 mm., of male 15 mm. 



Remarks. This is the form upon which Kreyer founded his genus 

 Dulichia, and it ought therefore to be regarded as the type species. It is 

 easily distinguished from the other known species, both by its comparatively 

 large size and the spinous armature of the body. 



