234 



Occurrence. — Owing to its small size and inconspicuous colouring, 

 this peculiar form may easilj' escape attention. I have only seen a few 

 specimens, which were derived from 3 different localities off the Norwegian 

 coast, viz., in the Hardangerfjord at Sunde, in the Trondhjemsfjord, and off 

 the Lofoten Isles. It occurred in all the localities at a very considerable 

 depth, from 150 to 300 fathoms. Out of Norway, it has not yet been recorded. 



Fam. 8. Stenothoidae. 



Body more or less compressed, with rather large coxal plates, the 

 1st ])air of which, however, are quite rudimentary. Cephalon comparatively 

 small, and without any distinct rostrum. Metasome, as a rule, not very 

 powerful. Antennae more or less slender, with elongated peduncles, the 

 superior ones without any accessory appendage. Buccal mass very little 

 projecting. Anterior lip laminar, and distinctly bilobed ; posterior lip very 

 small. Mandibles, as a rule, short and stout, cutting edge coarsely dentated, 

 molar expansion very slight, or quite obsolete, palp present or wanting. 

 First pair of maxillae rather stout, palp uni- or biarticulate, basal lobe 

 minute. Second pair of maxillae much smaller than the 1st, inner lobe more 

 or less rudimentary. Maxillipeds with the basal lobes comparatively small 

 and sometimes coalesced, masticatory lobes obsolete, palp very lai'ge and 

 pediform, with the terminal joint claw-shaped. Gnathopoda, as a rule, very 

 unequal, the posterior ones being much the larger, distinctly subcheliform, 

 and often peculiarly modified in the male. Pei'eiopoda more or less slender, 

 basal joint of the antepeniiltimate pair generally (biit not always) linear, 

 that of the last 2 pairs, as a rule, laminaidy expanded. Branchial lamellas 

 simple and rather small; incubatory lamellae large and broad, edged with 

 slender setae. The 2 anterior pairs of uropoda normal, biramons; last pair 

 sin)ple, stylif'orm, 3-articulate. Telson, when present, squamiform, entire. 



liemar/ii^\ — The present family is a very natural one, differing, as 

 it does, in several points very materially from those treated of in the 

 preceding pages. Thus the structure of the oial parts is lather pecialiar, 

 as also that of the last pair of uropoda. The sexual difFerence is often very 

 pronounced, especially as regards the structure of the posterior gnathopoda. 



