230 TACK SKOOSHKRO 



with rathtT powerful secondary tootli distallx , inic is of about tin' same type, l)ul larger and 

 more powerful, tlie three reinaiiiiu'; ones, all somewhat longer than thr thrrc others, are latlirr 

 weakly poetinated distally; the two outer of these usually have on the midille rather sparse 

 and rather long, exeeedingly tine hairs. The tiiiid endite has also six bristles: the three outer 

 of those are of about the same type as the outer ones on the seeond endite; of the three remaining 

 ones one is of about the same length as the three former ones, with short, fine hairs or almost 

 bare, one somewhat shorter, rather strong and with rather powerful distal secondary teetli, 

 the remaining one, the inner one, is of about the same length as the last-mentioned one, l)ut weaker 

 and apparently in most cases bare (sometimes missing?). The proximal bristle on the outside 

 of the third endite is nearly as long as the outer edge of this process and has short, fine hairs or 

 is almost bare. The dor.so-distal bristle of the coxale is about as long as the outer ones of the 

 distal bristles of the third endite. Of the three bristles on the boundary between the basale 

 and the first endopodite joint the one that is situated close to the exopodite is about as long as 

 the bristles of the last-mentioned branch and is plumose; the two others are almost bare, the 

 one on the anterior edge of the palp is somewhat shorter than the dorso-distal bristle of the 

 coxale, the other still somewhat shorter. Exopodite: 01 the three bristles the proximal 

 one is about as long as this branch and has short, fine hairs or is almost bare; the two others 

 are somewhat longer and densely plumose. Endopodite (fig. 10): First joint: This has 

 distally on the anterior edge two rather long bristles, of which the proximal one is somewhat 

 longer than the distal one; both are bare, or else the proximal one is sparsely plumose. On the 

 posterior edge of this joint there are similarly two distal bristles, the posterior one rather long, 

 the anterior one half the length of the posterior one, both with moderately strong pectination 

 distally. The chitinized posterior, verruciformly projecting distal edge of this joint is comparati- 

 vely weakly developed and varies somewliat in form. The end joint is very strongly chitinized, 

 especially on the inside, which forms a broad, blunt and strong tooth. It has thirteen bristles: 

 four moderately long, rather strongly pectinated a-bristles; three b-bristles, the anterior one 

 of which is moderately long, rather powerful and rather strongly pectinated, tlie two others 

 are subequal, also rather powerful, straight, spine-like and bare or almost bare, only about 

 half the length of the former one; three c-bristles, of about the same tyi^e and size as the anterior 

 one of the b-bristles; three d-bristles, very powerful, very much bent in the middle and quite 

 smooth (from which quality the name of this species is derived), only in exceptional cases can 

 one or more weak secondary teeth be observed on these bristles, the posterior of them is largest 

 and most powerful, the anterior shortest and weakest. Pilosity: On the first endopodite joint 

 there are some transverse rows of fine, rather long hairs. 



Fifth limb: — Protopodite: The first endite (fig. 12) has seven bristles. 

 Of these nos. 2, 4 and 5, counting from the anterior side of the limb, are subequal and 

 comparatively long and powerful, equipped distally with numerous rather long and stiff secon- 

 dary bristles, placed close together in more or less well-defined oblique wreaths. Bristle no. 1 

 is of about the same type as those already mentioned, but is only about half their length. The 

 three others are still shorter: no. 3 has in the middle a wreath of rather long, stiff hairs and is 

 pectinated distally; no. 6 is rather weak, with thin walls and furnished with a rather small 



