78 



small bispinose lappet inside turning towards the mouth, terminal prominence 

 very coarse, resembling somewhat in shape the molar process of the mandibles 

 in higher Crustacea; palpe sub-spatulate in form, and armed on the broadly 

 rounded terminal edge with 5 coarse spines of equal size. Maxillipeds short 

 and stout, with a small conical process inside the large proximal joint; distal 

 joint strongly chitinised, incurved, and projecting at the end into 2 coarse and 

 somewhat unequal spiniform processes. The 4 anterior pairs of legs of essentially 

 same structure, 2nd basal joint well defined from the 1st and projecting outside 

 in a small, knob-like prominence ; inner ramus oval in form, with the 2 apical 

 setaB rather slender and considerably exceeding the ramus in length; connecting 

 plate between these legs divided by a deep incisure into 2 rather prominent lingui- 

 form lamellae. Last pair of legs obliquely oval in form and slightly upturned, 

 advancing on each side somewhat over the base of the tail, each having on the 

 posterior edge 2 small bristles. Ovisacs not present in the specimen examined. 



Colour of the living animal not yet ascertained. 



Length of the body 2.60 mm. 



Male unknown. 



Remarks. The above-described form is unquestionably referable to the 

 genus Enterocola of v. Beneden, but differs from the 2 other known species 

 by the comparatively narrow cylindrical form of the anterior division of the 

 body, as also in the structure of the posterior antennas and oral parts. Another 

 character by which this form is easily recognised is the peculiar bilamellar 

 shape of the connecting plates between the 4 anterior pairs of legs. The 

 specific name here proposed alludes to this character. 



Occurrence. A solitary specimen only of this form, an apparently fully 

 grown female,, but without ovisacs, has as yet come under my notice. It 

 was found in a bottom-sample taken at Farsund, south coast of Norway, from 

 a depth of about 40 fathoms, and had undoubtedly by some accident been 

 thrown out from its abode within some compound Ascidian. 



Gen. 17. Mycophilus, Hesse, 1865. 



Generic Characters. Body of female soft, vermiform, and more or less 

 strongly curved dorsally, with no sharp demarcation between the anterior and 

 posterior divisions. Trunkal segments indicated by slight constrictions of the 

 body. Tail however not at all segmented, sac-like, with 2 very small 

 lamellae (the caudal rami) on the blunted extremity. Anal orifice not, as usual, 



