326 



ME. P. H. GOSSE ON THE CLA SPING-ORGANS 



iection at the tip, which is darker and seems firmer and denser than the substance of the 

 valve as if it partook of the nature of a prehensor. The dorsal margin is fringed by 

 very Ion- projecting hairs; and the interior cavity is thickly beset with fine sinning 

 pale hairs, in irregular groups, which spring from various points, and make it difficult 

 to see the'outhne of the parts. In the delineation, I have omitted most of these tufts of 

 hair as otherwise nothing could be represented. The harpe is complex. Pirst, from the 

 dorsal margin, a little below the projecting terminal wart, rises, almost erect, a stout 

 black polisned spine; then, further down the same margin, but a little within, is a 

 similar smaller spine of clear yellow chitine. From a base occupying the whole width 

 of the valve, proceeds along the middle of the cavity an irregularly curving, stout, thick 

 rod whence, beyond the middle, springs an erect, black, polished spine; the rod then 

 expands, and terminates in a free claw of two pincers, notched along their opposing 



g(J(TgS. 



The whole anal region is protected and concealed by a wide canopy of long, pro- 

 jecting, parallel scale-hairs, over all, which reaches far beyond the fringes of the valves. 

 These proceed from the dorsal arch of the eighth segment ; and other long scales proceed 

 from the sides of the same. When these are all removed, we see a moderately long 

 uncus, very slender, acute, nearly straight, and horizontal. Below it is the scaphium, 

 dark but translucent, shining yellow, shallow, and narrow but long, the " double 

 teeth" discernible only as a slight thickening. 



The penis is very long, narrow, pointed, in contact with the lower surface of the 

 ecaphium, beyond whose extremity it protrudes. 



This and the preceding, both African species, have, in their irregular and complex 

 armature, much in common, with ample diversity. 



Papilio Agesilatts, Boisd. (A. B.) (Plate XXXIII. figs. 4-6.) 



Valve externally thickly clothed with scales, half white, half black, the colours abruptly 



divided Along the ventral margin, around the extremity, and nearly halfway down,^ 



the dorsal side, a close fringe of long black hairs extends, springing from the very edge. 



This considerably augments the apparent area. The cavity is almost wholly occupied 



by a large and very elaborate harpe, whose structure I do not quite understand; for 



thou-h ft can be separated for examination, the process inevitably distorts the parts, 



and alters their relation to each other. There seems to be a great arching ridge of dark 



chitine right across the middle, ending in a great erect double claw, near the ventral 



margin'- more or less structurally connected with this, by the chitinous base, rise two 



other erect pieces, the three standing triangularly, and bending toward each other. 



Prom the arching ridge extends a (comparatively) great spoon-like plate, nearly filling 



the terminal moiety of the valve, its ventral edge, running about parallel with the 



ventral edge of the valve, of denser and darker chitine than the rest, cut into close 



minute saw-teeth. This saw-like edge stands, throughout, free above the level of thd 



""In examination of the left valve in some measure cleared the difficulty— at least so 



