644 



TAGB SKOGSBERG 



and reproduced by G. W. Muller, 19U1; on both the right and left antennae tliere are cross- 

 ridges distally; tlie right clasping organ may or may not have a few small chitinous verrucae 

 on its proximal shank. The h-, i- and j -bristles are subequal and in most cases somewhat, 

 though only shghtly, shorter than the f-bristle; they are of about the same width as the f- and 

 g-bristles distally of their shafts and are bare; none of them has any traces of a shaft. 



Mandible: — Protopodite: Coxale: The toothed edge on the pars incisiva 

 has from about nine to eleven teeth, of which the posterior ones are in a number of cases somewhat 

 more developed than in my fig. 16 of C. symmetrica. The distal tooth -hst is of about the same 

 relative size and type as has been described for C. oblonga above. The proximal tooth-list is 



of about the same relative 



size and type as is described 



below for C. sfinirostris, but 



the teeth seem to be on an 



average somewhat, though 



only rather sUghtly, fewer. 



The part situated proximally 



of this tooth-list is also of 



about the same type as in 



the last-mentioned species. 



Basale: The six teeth on the 



distal edge of the endite are 



furnished with rather fine 



serrate teeth. The single 



tooth on the outside of this 



endite is of about the same 



type and size as in my fig. 19 



of C. symmetrica; in jnf)st 



cases it is finely serrulated 



along the greater of both the 



posterior and the anterior edge; its j^uint seems, liowever, to be smooth in most cases. The disto- 



medial bristle of this joint is in most cases somewhat longer than in most species of this genus. 



There isnoepipodial appendage. Endopodite: The first joint has only two 



posterior bristles, which have about tlie same position and relative length as in C. spinirostris. 



Maxilla: — This is of the same type as is described below for C. spinirostris. 



Fifth limb: — This is of about the type described on p. 630 above for C. degans, 



but in the specimens investigated by me there was never more than one tube-bristle dorsall}- 



of the short dorsal claw on the endopodite; in addition the shorter bristles in the ventero-distal 



group on the first exopodite joint were usually somewhat longer relatively than in the species 



just mentioned. 



Penis (see fig. 11): — This is very powerful, relatively high and distally rounded, it 

 has from about eight to thirteen transverse muscles in the distal half; distally of these there 



Fig. CXXI. 



Cunchoecia obta^ala (i. O. Sars. J. 



11. Penis, seen fi'iuii 

 outside (drawn as if it were seini-traiisiiareiit); 260 X. 12. Ttie point ot' this 

 organ seen from outside; 833 X. (From a specimen from Skager Rak.) 



