73 



roiiiided quadrangular, nearly as broad as long, tip transverse!}^ truncated, 

 with 2 apical denticles and 2 small spiniform bristles on each side. Body 

 yellowish, each segment having a bright orange-coloured transversal band partly 

 extending down the coxal and basal joints of the 3 posterior pairs of pereio- 

 poda; ova in the marsiipial pouch dark violet. Length of adult female 

 only 4 mm. 



Bemarls. — This is the only as yet known species of the genus and 

 was, as above stated, wrongl}^ referred by Boeck to the genus Orchomene. 



Occurrence. — I have only met with 2 specimens of this diminutive 

 species, both collected in the same locality, viz., at Folgero, west coast of 

 Noi'way, in a depth of about 40 fathoms. Boeck collected this form at Hauge- 

 sund in comparatively shallow water between algae. Out of Norwaj' it has 

 not yet been recorded. 



Gen. 17. Orchomenopsis, G. 0. Sars, n. 



Syii: Oivlnjitieuc, Stebbing (ex parte). 



Body more slender than in the 3 preceding genera, with the metasome 

 well developed and the coxal plates successively increasing in size to the 4th 

 pair. Cephalon with the lateral corners obtusel}^ rounded. Last pair of epi- 

 meral plates of metasome likewise evenly rounded, posterior edge smooth. 

 Superior antennae of moderate length, with the accessory apjiendage well de- 

 veloped. Liferior antennae considerably longer than the superior. Epistome 

 not at all projecting, anterior lip rounded in front. Mandibles strong, with 

 the molar ex])ansion slightly produced; palp rather large and originating a 

 little nearer the base than does the latter. First pair of maxillae with the 

 masticatory lobe obliquely truncated and armed with strong denticulated spines 

 partly of lamellar form, basal lobe narrowly produced, with 2 small apical 

 bristles, palp normal. Second pair of maxillae with both lobes narrowly pro- 

 duced and acuminate at the tip. Maxillipeds al^out as in Oichomenellu. An- 

 teri(jr gnatliopoda veiy powerful, subcheliform ; posterior ones with the carpus 

 rather expanded, propodos comparatively short and angularly jiroduced at the 

 tip beneath the minute dactylus. Pereiopoda strong, basal joint of the 3 post- 

 erior pairs moderately expanded. Last pair of uropoda considerably pro- 

 jecting beyond the preceding pair, rami setous on the inner edge. Telson 

 large, triangular, deeply cleft, the incision ver\- narrow, fissure-like. 



