606 TAGE SKOGSBERO 



me best, in order to avoid too much repetition in tlie following descriptions of species, to describe 

 here what one might call the normal type of this limb in this genus. When a character of this 

 limb is not specially mentioned in the following descriptions of species, it thus means that in 

 the species in question this character agrees with what is denoted here as the most usual state 

 of affairs. — This limb shows no, or at any rate scarcely perceptible, dimorphism. — P r o t o- 

 podite: Coxale: The toothed edge of the pars incisiva is in most cases of about the same 

 type as that reproduced below in fig. 16 of C. symmetrica, i. e. the most anterior tooth is very 

 powerful, smooth, low, broad, rather transversally and evenly cut off distally; tlie others are 

 also smooth and decrease, though somewhat irregularly, in size and strength the more posteriorly 

 they are situated; the anterior ones are moderately large and somewhat irregularly triangular, 

 the posterior ones are very small; the posterior part of this edge can conveniently be described 

 in this type as being irregularly undulated. The number of these teeth is rather difficult to 

 establish with certainty on account of the small size of the posterior teeth and it varies somewhat 

 even within the species. The toothed edge seldom varies from this type. In some species, 

 however, variations were observed with regard to the teeth situated behind the large anterior 

 tooth. These are sometimes subequal — or else the most posterior one is even somewhat more 

 powerful than its neighbours — and are all relatively smaller than the anterior ones of these 

 teeth in the type described above, irregularly triangular and smooth (cf. my figure 9 of C. rotun- 

 data G. W. MOller). In one species (cf. my figure 6 of C. Gaussi) this toothed edge ends poster- 

 iorly with a low, broad, irregularly rounded tooth; the teeth nearest to the large anterior one 

 are of about the same type as in the , .normal type" described above, but somewhat less relatively; 

 the other teeth decrease in size and strength the more posteriorly they are situated; the part 

 just in front of the broad rounded posterior tooth is finely serrulated. The two tooth -lists and 

 the masticatory pad show such great variability that it did not seem to me convenient to de- 

 scribe them in this connection. I need only point out here that the tooth-lists often exhibit 

 a certain variability even within the species and that the masticatory pad is always well developed. 

 Along the posterior edge of the pad-like part of the pars incisiva there are four more or 

 less broad lancet-bristles and also a large number of rather short or moderately long bristles, 

 situated close together and simple or somewhat bifurcated distally. Basale: This is in most 

 cases of about the type reproduced by me in fig. 22 of C. symmetrica; its relative length is in 

 exceptional cases somewhat less and it has sometimes a relatively stronger endite. The six 

 teeth on the distal edge of the endite are in most cases all of about the same size and type. 

 These teeth have most frequently the following type: They are moderately large and 

 almost equilaterally triangular; about the jiroximal halves of the anterior and posterior 

 edges are exceedingly finely serrulated; in a number of cases this serrulation is rather 

 strong. In exceptional cases (cf. my fig. 10 of C. Gaussi) these teeth are relatively low, 

 the proximal serrate teeth on one or both of the edges are, on the other hand, very powerful, 

 i. e. the difference between the main points of these teeth and the serrate teeth has almost 

 disappeared in this type. The two posterior processes on this edge are subecpial, moder- 

 ately strong, bare or furnished with a few secondary spines; the distal one of them is of the 

 tube-bristle type, the pioximal one, which is situated rather slightly proximally of the former 



