017 



the otlier 2 combined, and not very mnoh expanded, being armed ou the 



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



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



not very strong and scarcely longer than the superior, basal joint somewhat 



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 with the propodos slightly widening 



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



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



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



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



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 along the back with a 



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



BemarJcH — I have been in some doubt about the identification of 



this species, but it seems on the whole to agree rather well with 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. crassicorne, 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 G — 10 fathoms. 



DislrlhUion. — British Isles (Sp. Bate), coast of France (Milne-Edwai'ds). 



