48 



theless easily distinguished from it; it is less elongate and comparatively both 

 higlier and broader, and as a whole more cylindric in shape. The basal portion 

 of the sac is comparatively much smaller and the anterior cleft better marked (n); 

 the funnel (/) is not completely straight, but curved slightly backwards in the 

 middle. The number of the subconical tubercles is about 30 and a single (li') is 

 placed posteriorly in the basal portion ; at least a single bears three hairs, all well 

 articulated; exteriorly a few ridges to support the tubercles, but nearer to the base 

 apparently none. 



3. Ch. superbiis, var. n. sp. provides great similarity to Ch. depressiis, the basal 

 portion only is even smaller, but with the usual anterior cleft and dorsal and 

 ventral grooves or depressions. A great number of cones are situated along the 

 anterior and exterior surfaces, but also anteriorly at the dorsal surface at least; 

 the supporting ridges are only poorly developed. When the coxal sac is observed 

 in its natural position in the coxa, it is observed that the basal portion is placed 

 on a distinctly lower level than the distal, which has a direction obliquely upwards, 

 so that the relative position of the two parts seems not to be the same as in Ch. 

 Mortensenii n. sp. 



4. Ch. snberbus n. sp. provides great similarity to the preceding one, but has 

 also interesting structures of its own. The basal portion is very small, and the 

 anterior cleft is slightly pronounced, while the dorsal and ventral grooves are fairly 

 distinct; the anterior surface of the funnel proper is concave and much longer 

 than the posterior. The anterior as well as the exterior wall of the distal cavity 

 is densely crowded with subconical tubercles, mounted with a single or a few 

 hairs and supported by short ridges, and so are, but in a less degree, the dorsal 

 and ventral sides anteriorly; the skin is everywhere provided with very thin, trans- 

 verse ridges. The sac of this species is remarkable thereby, that a large portion of 

 the distal and posterior surface is deeply excavated ; the limitation of this excava- 

 tion could not be followed in the single specimen at disposal. 



5. Ch. granulatus C. K. — The coxal sac of this species of which I have only 

 examined a single partly broken specimen, seems to be more similar to that of 

 Ch. lampropsalis L. K. than to those of the previously described species; it is rather 

 long and slender and there is no marked distinction between the two portions 

 exteriorly, as neither anterior cleft, no dorsal and ventral depressions in continua- 

 tion of it, were traced. The "funnel" is represented by a number of about 30 

 long, slender and bifurcate hairs, which are placed anteriorly and slightly removed 

 from the base; they converge towards each other and cross each other, just before 

 they arrive at the entrance opening, beyond which they diverge in all directions. 

 The anterior and the exterior surfaces as well as the dorsal and ventral ones 

 posteriorly are up to just in front of the "funnel" densely crowded with subconical 

 tubercles, bearing the usual sometimes bifurcate hairs, as well as with a mesh- 

 work of supporting more or less short and curved, sometimes branched ridges; 

 the anterior surface, where no subconical tubercles are found, bears no hairs. 



