617 



the other 2 combined, and not very much expanded, being armed on the 

 outer edge with 3 spines, flagellum somewhat exceeding half the length of 

 the peduncle, and composed of 6 articulations. Inferior antennae, in female 

 not very strong and scarcely longer than the superior, basal joint somc\vli;it 

 produced inside and tipped by a spine; antepenultimate peduncular joint 

 armed with 2 spines; penultimate joint not at all expanded, being nearly 

 cylindric in form, and carrying on the posterior edge 3 strong spines; last 

 joint a little shorter and armed with a single spine beyond the middle of 

 the posterior edge. Anterior gnathopoda \vith the propodos slightly widening 

 distally, and having the palm somewhat oblique; posterior gnathopoda with 

 the dactylus bidentate at the tip. Anterior pairs of pereiopoda with the 

 meral joint rather expanded, and the carpal one very short, dactylus about 

 the length of the last 2 joints combined. Last pair of pereiopoda very slender 

 and elongated, with the basal joint lamellarly expanded and the outer ones 

 very narrow. Last pair of uropoda with the terminal joint rather large and 

 broadly oval in form. Telson twice as broad as it is long, and having the 

 tip transversely truncated. Body whitish, variegated a-long the back with a 

 very dark pigment forming transverse bands. Length of adult female 6 mm. 

 Remarks - I have been in some doubt about the identification of 

 this species, but it seems on the whole to agree rather well \vitli the short 

 description given by Milne-Edwards of his C. Bonelli. In the complete fusion 

 of the segments of the urosome, this species agrees with C. crassicornc, but 

 is easily distinguished by the want of a rostrum, by the short, rounded, lateral 

 lobes of the cephalon, the comparatively larger and more darkly pigmented 

 eyes, and by the rather different structure of the antennae. In the living 

 state the animal may also at once be recognized by the very dark pigment 

 ornamenting the body. It is very strange, that I have never met with 

 males of this form, though I have collected the species in several places. 

 Perhaps the sexual difference in this species is so very slight as to escape 

 attention. 



Occurrence. The species would seem to occur both on the south 

 and west coasts of Norway, at least to the Trondhjemsfiord, and is generally 

 found in depths varying from 610 fathoms. 



Distribution. - - British Isles (Sp. Bate), coast of France (Milne-Edwards). 



