35 



mitfi' iiiif imicli the larger and luiving a distinct terminal joint. Telsoii large, 

 tapering, and deejdy cleft. 



JReniarlis. — Thi,'^ genus, tliougli in some points related to the 

 preceding one i.s very markedly di.stingnislied Ly the rather different structure 

 of the antei'ior gnathopoda and of the maxillipeds, as also by that of the 

 last pair of uropoda and the telson. It was founded by the Rev. Mr. Stebbing 

 on a sjtecies from the «Challenger» Expedition ])rocured at Kei-guelen. 



3. Cheirimedon latimanus, (t. <>. Sars. 



(PI. 13, fig. 2). 

 Nnrmanifi hifii)ianri. G. O. Savs Ovcvsigt af Norges Cvnstaceer I, p. 83, pi. 3 fig. '5. 



Body highly compressed, with the back evenlj' rounded. Ce])halon 

 having the lateral corners somewliat projecting and angular. Segments of 

 mesosome successively increasing in .size posteriorly. Coxal plates very large, 

 the 4 anterior jiairs l)eing more than twice as deep as the body; oth pair about 

 as dee]i as it is liroad. Epimeral plates of metasome likewise rather large, last 

 pair having the posterior corners rectangular. First segment of urosome pro- 

 duced dorsally to a high compressed projection, obliquely truncated at the tip. 

 Eyes of moderate size, narrow oval. Sujierior antennae about the length of 

 the cephalon and tlie 3 anterior segments of the mesosome combined, 1st 

 joint of the peduncle more than three times tlie length of the other 2 com- 

 l)ined, tlagellum about the length of the peduncle, 7-articulate with the 1st 

 joint rather large, accessory appendage slender, triarticulate. Inferior antennce 

 (in female) about the length of the superior, tlagellum 6-articulate. Anterior 

 gnatho])oda with tlie carpus very small, triangular, propodos exceedingly 

 lai'ge and l>roatl, occujiying about the third part of the length of the leg, 

 triangular, gradually expanded towards the extremity, palm without any 

 crennlations, slightly arcuate and defined below by a rightangled corner armed 

 with 2 slender spines. Last pair of uro])oda with the basal pai't .shorter than 

 the telson, inner ramus conically tapering and (piite bare, outer one having 

 at the end of the basal joint on each side a short spine. Telson almost 

 twice as long as broad, gradually tapering and cleft beyond the middle, with 

 2 small dorsal denticles on each side and a single one at the tip of each 

 tenninal lolje. Length of adult female (i mm. 



Bemarls. — The present species was formerly referred by the author 

 to the genus Nornnmia. But a closer anatomical examination has shown it 

 to be in reality rather ditferent, and evidently to belong to the genus 

 Cheirimedon. as characterised bj' the Hev. Mr. Stebbing. 



