Scl'iizopoi/u Colli cted in the Anlarclic He. /ion. 7 



bounding a nioinbraiions area which is ovcrhuu-^ hy a iikmm- 

 braiious Map apparently risiijf^ from its |)ostcrior boi'ihr. 

 Antennal pfdimclt' h)n^er than tlic anteiiimlar, and almost 

 as lonj; as the antennal scale, slender, distal joint shorter 

 than the pieeedinjj. Antennal scale lanceolate in shape, 

 about three and a half times as long as broad, tip evenly 

 rounded, the whole of the inner margin and distal third of 

 the outer margin setose; proximal two thirds of the outer 

 margin without sctie, but bearing eleven strong spines, the 

 first spine at about the end of the proximal (juarter of the 

 outer margin, the spines inereasing in size distally. Muuth- 

 fuirls agreeing in all partieulars with those of //. fylla. First 

 thoracic limb very mueh like that of Il.fijlla, without exopod 

 but with a well-developed epipod, no inner raeral lobe, 

 seventli joint of endopod with four strong and rather long 

 spines, sixth joint witli two, fifth joint with three, and fourth 

 joint with six short spines on their inner margins. 

 Riniaining thoracic limhs agreeing in their main points with 

 those of /J.fijlfa, all with rather slender endopods and well- 

 developed ex opods. Marsiqiial /ouch of female composed 

 of seven pairs of ineul)atory lamella!. Pleopods of the 

 female ail uniramous, the rami of the first four pairs uni- 

 articulate, those of the fifth pair biarticulate ; pleopods 

 increase in size posteriorly, the fifth and longest pair 

 reaching to the liase of the telson. Telson longer and a little 

 wider than the last segment of the pleou, almost oblong in 

 shape, sides slightly arcuate ; apex wider than the base, 

 truncate or very slightly cmarginate, with a median small 

 spine and about six or seven long sj)ines on each side ; lateral 

 margins armed with about twenty-five fairly long spines 

 arranged more or less in series of three. Outer uropod 

 nearly twice as long as the last segment of the pleou, two- 

 jointed, terminal joint about one seventh as long as the basal ; 

 outer margni of the basal joint without setie^ but armed w ith 

 twenty-one stout spines. 



Length of adult female 20 mm. 



Locality. Off Coulmau, 100 fath., two females. 



Apart from the eye-apparatus, which may possibly be 

 entirely absent in H.fyllcs, tlie latter differs from H. untarctica 

 chicHy in the characters of the antennal scale and outer 

 uropods, and of so mueh of the telson as remains in Hansen's 

 specimen. The peculiar structure which we have noted on 

 the basal joint of the antcnnular peduncle in //. anturctica 

 may prove to be an auditory organ. 



