67 



pair deeper tliaii ihey are broad and forming at the infero-posterior corner 

 a projecting triangular lobe. Last pair of epimeral plates of metasome with 

 the infero-lateral corners a little produced, posterior edge smootli. First 

 segment of nrosome having a slight transversal depression at the base. Eyes 

 oval, somewliat narrowed above, pigment light red. Sujierior antennae with 

 the 1st joint of the peduncle rather large, flagellum scarcely longer than the 

 peduncle, 10-articulate, with the 1st joint about as long as the 3 succeeding 

 ones combined; accessory appendage scarcely half the length of the flagellum, 

 4 — fj-articulate. Inferior antennas in female only little longer than the superior, 

 flagellum 10 — 12- articulate. Epistome slightly projecting in front of tiie 

 anterior lip and evenly rounded. Anterior gnathopoda comparatively slender, 

 propodos about as long as the carpus and very slightly tap)ering to the 

 somewhat obliquely truncated tip. Pereiopoda unusually short, with the daetjdus 

 very minute; basal joint of the 3 posterior pairs very large, longer than the 

 remainder part of the leg. Last pair of uropoda with the inner ramus fully 

 as long as the basal joint of the outer, the latter provided (in female) with 

 a single seta on the inner edge. Telson nearly twice as long as broad, cleft 

 bej^ond the middle, lateral lobes slightly diverging at the tip. Body pale 

 yellowish red, or flesh-coloured, each segment having at the infero-lateral 

 corners a small orange-coloured speck. Length of adult female scarcely 

 exceeding (i mm. 



Ilenmrls. — Tlie present species was first described l)y Kroyer as 

 an Anmiyx and subsequently referred by Boeck to his genus Orcliomcne. It 

 may be regarded as the type of the genus. 



Occitnence. — The species would seem to occur along the wdiole coast 

 of Norway, Inxt is especially very fre({uent in the Arctic region, off the coast 

 of Nordland and Finmai-k, in moderate depths, from 20 to 50 fathoms. 



Disfrihiifion. — Arctic Ocean: Greenland, Spitsbei'gen, the Murman 

 Coast, the .Siberian Ptdar Sea (Stuxberg); ? Biitish I.sles (Sp. Bate); ? Ad- 

 riatic (Heller). 



24. Orchomenella pingvis, (Boeck). 



(PI. 24, fig. 2). 

 Orchmncnc jntigvis, Boeck, Crust, ampliip, bor. & arctica, p. 3(5. 



Very like the preceding species in its general hal)itus, though perhaps 

 somewhat thicker in proportion to its height. Lateral corners of cephalon 

 narrowly munded at the tip. Coxal plates not full}- as deep as in 0. minida, 

 1st pair distinctly' exjjanded below, 5th pair exhibiting a similar projecting 

 lobe at the infero-posterior corners as in that species. Last i)air of epimeral 

 plates of metasome rounded at the infero-lateral corners, posterior edge 



