300 



lowish brown colour. The swimming movements of the animal arc rather clumsy, 

 .Hid .-in' effected in an abrupt jerking manner. When disturbed, it immediately 

 sinks to tin- liuttom. and rolls its body up almost into a hall by a strong ventral 

 llexure. remaining in this attituoV lor some time. Exactly the same behaviour 

 may also be observed in the succeeding species. 



Occurrence. 1 have met with this form not unfrequentlj in the upper 



part of the ( 'hristiania Fjord in a depth of about <i fathoms, muddy bottom. It 

 also occurs occasionally at Skute-na-s, south-west coast of Norway, and is more- 

 over recorded by Th. Scott from the Finmark coast. 

 lhsl> ilnilnni. Scottish coast (Scott). 



i!. Enhydrosoma propinqvum (Brady). 



<P1. <('VI). 



r/,/,/,'.s /-,-.-/,;,/./(,/. r.i-ii.iv. .M ...... gr. nrii. Cnp^po,!:,. Vol. in. p. MI, pi. IAXYII. figs. 917. 



Y/ r/7/V ('liiirni-li /.-. -Female. Body considerably more slender than in 

 the type species and tapering more gradually behind. Cephalic segment less 

 tumid, with the rostral projection broader and terminating in a blunt, somewhat 

 recurved point, ("rosome much shorter than the anterior division, last segment 

 larger than the preceding one and scarcely widening distally. Caudal rami com- 

 paratively small, blade-like, \\ith the lateral seta> rather distant, dorsal seta issuing 

 close to the ba>e. middle apical seta scarcely longer than the ramns itself. An- 

 terior antenna- ^hort and stout, with the 2nd joint much larger than the 3rd, 

 terminal part scarcely half as long as the proximal one. Posterior antenna- with 

 the terminal joint fully as long as the basal one. and less dilated distally than 

 in the type species; outer ramus somewhat larger than in that species, but of a 

 \er\ ^imilar structure. Mandihular palp comparatively smaller, with only a single 

 lateral lobule. Natatory leg- re-i'iubling in structure those in /*,'. curticaudatuvn, 

 though having the rami somewhat le^ robust. Last pair of legs likewise built 

 upon the xmie type, distal joint ho\ve\er wanting the dense clothing of hail's on 

 the outer edge, which is onl\ finely ciliated in its proximal half, marginal seta- 

 1 in number, one very strong at the tip. and .'! much shorter ones on the outer 

 due: inner expansion of proximal joint not extending to the middle of the distal 

 joint, and carrying on the tip a strong lancet-shaped spine, inside 2 more 

 sh-mb-r Bet. 



.!/"/' with the c;mdal rami >oinr\\hat narrower than in female. Anterior 

 antenna- hinged in the same manner as in the preceding species. None of the 



