ISo 



the 1st joint of the inner, and having the middle joint much the largest, last joint 

 somewhat dilated, and armed with 5 geniculated spines of exactly same appearance, 

 though gradually increasing in length distally; inner ramus very slender, with the 

 1st joint scarcely at all dilated and twice the length of the other 2 combined, 

 apical claw slender and elongated. Natatory legs with the basal part bent in an 

 elbow-like manner, rami extending at right angle to the basal part, and extremely 

 narrow, being less unequal than in the preceding species; terminal joint of outer 

 famus in 4th pair with only a single seta inside. Last pair of legs with the 

 distal joint exceedingly narrow, linear in form, and ciliated on both edges, number 

 of marginal setae as in S. longicaudata ; inner expansion of proximal joint rather 

 small and narrowly exserted at the tip, with only 3 apical setae. 



Body pellucid, of whitish colour. 



Length of adult female 0.83 mm. 



Remarks, The present species is easily distinguished from the preceding 

 one, both by the general form of the body, and by the numerous slender hairs 

 clothing it both dorsally and laterally, the last named character having given rise 

 to the specific name here proposed. It also differs conspicuously in the structure 

 of some of the appendages, though on the whole agreeing in the more essential 

 characters, so as more properly to be regarded as congeneric with that species. 



Occurrence. Only a very 'limited number of specimens of this remarkable 

 form have hitherto come under my notice. They were taken partly in the upper 

 part of the Christiania Fjord, partly at Farsund, south coast of Norway, from 

 depths ranging from 30 to 50 fathoms, muddy bottom. 





Gen. 51. PhyllOpOdOpSyllUS, Scott, 1906. 



Generic Characters. Body more or less slender, but comparatively strongly 

 built, with rather hard integuments. Anterior divison somewhat compressed and 

 having the last segment defined in front by a conspicuous constriction. Cephalic 

 segment comparatively large and deep, projecting in front to a short and blunt 

 immobile rostrum. Urosome well developed and attenuated behind, genital seg- 

 ment (in female) large and somewhat depressed, being imperfectly subdivided in 

 the middle, 2nd segment produced at the end ventrally. Caudal rami more or 

 less lamellarly expanded inside, and each carrying on the tip a strong seta bul- 

 bously dilated at the base. Eye well developed. Anterior antennae rather elon- 

 gated, and composed of 8 or 9 articulations, the 1st of which is much the largest, 



