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long as it is broad, and quite unarmed. Colour in the living state of tbe 

 animal not yet stated. Length of adult female scarcely attaining 3 mm. 



Remarks. This pretty little species is at once recognized from any 

 of the other known northern forms by the peculiar hooded prolongation of 

 the 1st joint of the superior antennae, which at first sight appears as a 

 beak projecting in front of the cephalon ; a fact which indeed gave rise to 

 the specific name, nasiita, proposed by Boeck. Otherwise it is very nearly 

 allied to a Greenlandic species recently described by Dr. Hansen as M. c- 

 rhiata, though evidently being specifically distinct. It is also closely allied 

 to a form described by the Rev. Mr. Stebbing from the Iverguelen Islands under 

 the name of M. nasutigenes, in which species the basal joint of the superior 

 antennae forms a hooded projection similar to that in the Norwegian species. 



Occurrence. I have met with this form in 3 different places on the 

 west coast of Norway, viz. at Kopervik, in the Hardangerfjord, and atChris- 

 tiansund. It occurred in all 3 places, rather sparingly in depths varying 

 from 50 to 100 fathoms. Out of Norway, it has not yet been recorded. 



Gen. 4. CreSSa, Boeck, 1870. 

 Syn ; Danaia, Sp. Bate (not M. Edw. & Haime). 



Body comparatively short and stout, with deep coxal plates, the 1st 

 pair of which, however, as in the other Stenothoidse, are quite rudimentary; 

 2nd and 3rd pairs quadrangular in form, with the infero - posteal corners 

 more or less strongly dentate; 4th pair smaller than in the other Steno- 

 thoidae, and deeply emarginated in their upper part to receive the rather 

 large 5th pair. Antennae very unequal, the superior ones being much 

 the longer, and very slender. Anterior lip distinctly bilobed ; poste- 

 rior lip with the inner lobes coalesced. Mandibles rather strong, molar 

 expansion very slight, cutting edge about as in Stcnothoe, palp slender 

 and elongated, distinctly 3-articulate, with the last joint well - developed. 

 First pair of maxillse having the palp uniartieulate; 2nd pair with the 

 inner lobe very small. Maxillipeds of moderate size, basal lobes not 

 coalesced, masticatory lobes very small, but distinct, palp elongated, pedi- 

 form. Anterior gnathopoda slender and feeble in structure, not subcheli- 



