270 I' \(;i: sKticsmmc 



First a II I (' II n ;i: 'I'ln' lirislK's dl' ilir tliiid, Imiilli .iiid sixtli juiiits :iimI tlic 



a-bristlc of tin- sovonth joint liavc aluuit the same position and tlic same iclalixc l('iij>tlis us in 

 C. (V.) uorregiat. The posterior bristle ni' tlif I'mirtli jnint is somewhat shorter ichit ively. All 

 tliese bristles have short liairs or aii' almost naked. The sensory luislle ol the lil'th joiril is ol 

 about the same length tis the second to the fourth joints (countiiijj; on tiie posterior side) or 

 somewhat longer. Of its thirteen sensory filaments - all entirely witlioiit secondary spines -- 

 tile nine proximal ones are separated from the distal ones by a rather wide gap and. compared 

 to the latter, they are relatively thick and long (attaining about a third to a hall ol the whole 

 length of the bristle); the three following ones are only about a fifth of the length of the bristle, 

 the distal one is still shorter. Of the bristles on the seventh and eighth joints the c-, f- and 

 g-bristles are rather long, the c-bristle attaining about the same length as the seven distal joints, 

 the f-bristle is somewhat longer, the g-bristle is about as long as the whole antenna. The 

 b-bristle is about as long as the total length of the fourth and fifth joints and has five sensory 

 filaments, each with one or two secondary spines. The c-bristle has ten sensory filaments each 

 furnished with from none to two (most of the distal ones with none) secondary spines. The 

 f-bristle similarly has ten sensory filaments, each with from none to five secondary spines. 

 The g-bristle has eleven sensory filaments, each having similarly from none to five secondary 

 sjjines. The secondarv spines on all the distal bristles are rather strong. The simple sensory 

 bristles d and c are about as long as the four distal joints. Pilosity: The second joint has anter- 

 iorly and posteriorly a few almost invisible transverse rows of short, fine hairs; apart from 

 these tills antenna is smooth. 



Second antenna: — Protopodite: Length about 0,0 mm. The medial- 

 distal bristle is of moderate length, not quite so long as the longest of the four 

 proximal bristles of the first endopodite joint, bare or almost so (fig. 12). Exopodite: 

 The first joint is about as long as the total length of all the following joints, the 

 second joint about as long as the total length of the two following ones, the 

 remaining ones are subequal. The bristle of the second joint is about as long as the 

 total length of the six following joints, and is furnished ventraUy with numerous moderately 

 strong spines, arranged in two rows. The proportion between the length of the long natatory 

 bristles and the total length of the exopodite is about three to two. These bristles are equipped 

 with broad natatory hairs. The end joint has four bristles, of which the dorsal one 

 is about as long as the total length of the five distal joints; like the others, it is furnished with 

 long natatory hairs situated rather close together. The third to the ninth joints have 

 powerful, rather long and conical basal spines, perhaps even a little longer relatively than 

 those in C. (V.) norvegica; they decrease in strength and length the more proximally they are 

 situated, the one on the third joint being of rather moderate proportions. At the base of the 

 bristle on the second joint there are no spines at all. Endopodite: This is very short, two- 

 jointed or with a very faint indication of being three-jointed. The first joint has a group of 

 four bristles proximally, one of wliich is rather long, considerably longer than the whole endo- 

 podite, the three others not half as long as this bristle; they are bare or almost so. In addition 

 there is presumably to be found a single bristle situated more distally on this joint, attaining 



