49 



6. Ch. lampropsalis L. K. (PI. II, fig. 12 a). — The sac is comparatively shorter 

 than that of Ch. graniilatus C. K., but it is similar to it in the structure of the 

 outer wall, for there is no limitation between a basal and a distal portion. While 

 both portions of the sac seem really present in Ch. granulahis C. K., the basal part 

 is probably really wanting in this species, for the "funnel" is placed close to the 

 entrance-opening (PI. II, fig. 12 a,/'); this is only poorly developed and represented 

 by about ten hairs, arising from a short plate with indistinct longitudinal lines, 

 and apparently basally fused. The anterior and exterior walls as well as the dorsal 

 and ventral posteriorly bear a number of subconical tubercles, which bear at least 

 a single often bifurcate and sometimes rather short hair each; these tubercles are 

 not so densely crowded as in Ch. granulatiis C. K., but the posterior wall bears a 

 single one almost in the middle. The supporting ridges scarcely form a meshwork 

 as in the latter species, but they are nevertheless numerous and have in the main 

 a transverse direction (cf. next species); anteriorly just beyond the base these ridges 

 are very short, rather narrow and densely placed. The skin is mounted with, in 

 the main, transverse lines or exceedingly thin ridges, rather indistinct basally, but 

 fairly well pronounced near tip. 



7. Ch. lampropsalidi sp. af. from Spain (PI. II, fig. 11 a, pi. Ill, fig. 6 a-c). — The 

 coxal sac of this si)ecies is remarkable by its great length and slenderness, being 

 five times longer than broad, and also that it is distinctly Hattened; it is similar 

 to the two foregoing species inasmuch as there is no exterior distinction between 

 a basal and distal part (figs. 6a-b). The "funnel" provides an interesting modifica- 

 tion; it is placed anteriorly near to the entrance-opening in a portion of the cavity, 

 which is at least dorsallyC?) marked off by a low wall (fig. 6 c, w) projecting into 

 the interior of the hollow; the units, which build up the "funnel", are of two 

 kinds, viz. short basal subconical tubercles, quite similar to the usual ones, con- 

 verging towards each other and with their bases, placed in an almost semicircular 

 bow, open towards the posterior, which are sometimes completely free, sometimes 

 more or less fused (fig. G c, /r') and of long slender hairs, placed terminally, con- 

 verging towards each other, until Ihey arrive the entrance opening, beyond which 

 they are divergent or parallel (/i'). The thus described "funnel" provides a marked 

 similarity to that of Ch. Mortensenii n. sp., as easily realised by comparing the 

 descriptions (PI. II, fig. 9 c, pi. Ill, fig. 6 c). The walls of the distal portion of the 

 cavity are everywhere beset with subconical tubercles, which are always connected 

 by ridges, on the arrangement of which that of the tubercles accordingly depends 

 {h and r); terminally the tubercles are densely crowded on all surfaces besides the 

 posterior; nearer to the middle they are less abundant especially posteriorly, and 

 basally thej' are only found anteriorly. These tubercles are sometimes long and 

 slender and sometimes short and clumsj'; two or even several are often fused with 

 each other; they bear often a single bifurcate hair, but sometimes several hairs 

 (lig. lia). The direction of these hairs are always obliquely towards the interior 

 of the cavity and towards the base of the sac; if the lip be cut olT such a sac 



11 K 1) Viilonsk Selsli SUr , 7. »ii-klip, niiluiviilfiisk, ub mkiIIumii AIVI III- 1. 7 



