534 



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

 flagelhim, and 8-articnlate. 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 structiire 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 seri'ations occupying 

 the ]n'oximal half. The 2 anterior pairs of pereiopoda extremely slendei', 

 witli the dactj-lus rather elongated; the 3 postei-ior pairs rapidly increasing 

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

 pair; the latter very much ehnigated, 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 tlie livIiTg state of 

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



Remarks. — The present new species is nearly allied to L. jialJirJa, 

 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 unusualh' elongated; hence the specific name. 



Oconrriice. — Only tAvo specimens of tliis form have hitliei'to come 

 under my inspection; the one found at Hvaloer, outer part of the t'hristiania- 

 fjord, the other at Rodbjerget in the Tlirondhjemsfjord. In both jdaces it 

 was taken from a very great depth, 200—400 fatlioms. 



29. Lilljeborgia fissicornis, (M. Sars), 



Gummarns fissicornis, M. Sars, Oveisigt over norsk-arkliske Krehsdyi', (lir. \'iil. Sel.sk. Korh. 



1858, p. 1-17. 



Syn: Iiluiia fissicornis, Boeck. 

 ' I.- '^'i- — Gamnianis palliflns, Cioes (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 

 segments of urosome eacli armed dorsally with a rather large and conijiressed, 

 triangularly-pointed projection. ('eplialon about tiie length of the first 2 

 segments of mesosome cond)ined, ro.stral projection rather small, lateral 

 corners subangular, postantennal ones small, but distinct. Anterior pairs oi 



