534 



accessory appendage rather slender, somewhat exceeding half the length of the 

 flagellum, and 8-articulate. Inferior antennae with the last 2 joints of the peduncle 

 nearly equal-sized, flagellum not attaining the length of those joints combined. 

 Gnathopoda rather strongly developed, otherwise of a similar structure to 

 that in the 2 preceding species, dactylus of the anterior ones with only 3 

 serrations at the base, that of the posterior ones with 7 serrations occupying 

 the proximal half. The 2 anterior pairs of pereiopoda extremely slender, 

 with the dactylus rather elongated; the 3 posterior pairs rapidly increasing 

 in length, and having the basal joint large and laminar, especially in the last 

 pair; the latter very much elongated, with the propodal joint smooth, and the 

 dactylus extremely slender, nearly equalling the length of that joint. Last 

 pair of uropoda with the rami comparatively narrow, the inner one, as usual, 

 somewhat broader than the outer, and having 3 small denticles on the inner 

 edge. Telson very narrow, nearly 3 times as long as it is broad, cleft 

 extending nearly to the base, terminal lobes tapering and minutely bidentate 

 at the tip, each with a very small apical spine. Colour in the living state of 

 the animal not yet stated. Length of adult female 6 mm. 



Remarks. The present new species is nearly allied to L. plli<~la> 



differing, however, very markedly in the want of distinct eyes, and in the 

 very slender form of the pereiopoda, the dactylus of which, especially of the 

 last pair, is unusually elongated; hence the specific name. 



Occurrence,. Only two specimens of this form have hitherto come 



under my inspection; the one found at Hvaloer, outer part of the Christiania- 

 fjord, the other at R0dbjerget in the Throndhjemsfjord. In both places it 

 was taken from a very great depth. 200400 fathoms. 



29. Lilljeborgia fissicornis, (M. Sara), 



//',s,s/Y,,////.s ; M. Sars, Oversigt over norsk-arktieke Krebsdyr, Clir. Vid. Selsk. Frh. 



1858, p. 147. 



Syn: Idiina I i SB i corn is, Boeok. 



Gamnmrns pallidns, Goes (not. Sp. Bate). 



Body moderately slender, with the segments of metasome including 

 the last one) each produced dorsally to a dentiform projection; the 2 anterior 

 -(-incuts of urosome each armed dorsally with a rather large and compressed, 

 triangularly pointed projection. (Vplialmi about the length of the first 2 

 egments of mesosonie combined, rostral projection rather small, lateral 

 cornei- subangular, postantennal ones small, but distinct. Anterior pairs of 



