187 



the integuments, and liaving a few orange-coloured patches on tlie posterior 

 part, ami on the basal joints of the last 3 pairs of pereiopoda, cephalon finely 

 dotted witli whitish and brownish pigment, which, however, does not form 

 any distinct I'amifications. Length of adult female scarcely exceeding 9 mm. 



Bemai-]is. On going over the rather large material of Bi/blis Gai- 

 mardii collected off the Norwegian coast in different places, and at different 

 times, I have been aware of this very nearly allied, though apparently distinct 

 species, and quite recently, I have had an opportunity of examining it also 

 in the living state. From B. Gaimnrilii, it may be readily distinguished not 

 only by its miich inferior size, but also by the much smaller corneal lenses, 

 by tlie distinctly angular inferior corners of the front, the different mutual 

 relation in length of the antennae, and finally by the want of distinct pig- 

 mentary ramifications on the cephalon. 



Occurrence. — As the species was formerly confounded with B. Gai- 

 mardii, I am at present unable to state, with certainty, the several places 

 in which tlie species probably occiirred, though I believe them to have belonged 

 either to the south or west coast of Norway. Oft' the coast of Finmark it 

 seems, in fact, to be wholly absent. For not even a single specimen could 

 be detected among a vast material of Byhli.v Gdimnrclii collected by Mr. 

 Schneider off that part of o\ir country, and kindly sent to me for examina- 

 tion. As mentioned above, I have, qxiite recently, observed this species in 

 a living state. It occurred only in a single locality, at the entrance of the 

 Skjornfjord, outer part of the Trondhjemsfjord, in a deptli of 40 to (30 fathoms, 

 but liere rather abundantly. 



17. Byblis erythrops, G. O. Sars. 



(PI. 66, lig. 3). 

 Byblis erythrops, G. 0. Sars, Oversigt af Norges Crustaceer I, p 109, PI. 6, fig. 3. 



Body rather slender and highly compressed. Cephalon with the 

 frontal part transversely truncated at the tip, inferior corners distinctly pro- 

 jecting. First pair of coxal plates obliquely expanded distally, and densely 

 fringed with rather long setse. Last pair of epimeral plates of metasorae 

 nearly rectangular, lateral corners rounded off. Corneal lenses very small, 

 and but little refractive, the lower pair placed at some distance from the 

 inferior corners of the front; ocular pigment bright red. Antennae ratlier 

 elongated, and less unequal than in the preceding species; tiie superior ones 

 but little shorter than the inferior, with the peduncle reaching considerably 

 bej-ond the penultimate peduncular joint of the latter, flagellum more than 



