316 ME. P. H. GOSSE ON THE CLASPLNG-OEGANS 



vision, there was no break of the light reflected from the shining surface. A.nd in other 

 examples there was no trace of them. These appearances, therefore, I cannot satisfac- 

 torily explain. 



The varus is curved in the usual arc ; it is thatched, for most of its length, with 

 coarse shaggy black hair ; the extremity forms a thick rounded spoon, bent abruptly 

 downward ; the keel produced by the vertical rami is unusually deep. 



The scaphivm is boat-shaped, rather shallow, with a cleft tip, and no proper keel, tbe 

 sides are full and round ; their summits, brown with longitudinal chitinous thickenings, 

 have no trace of the normal " double teeth," but are surmounted with ridges of long stiff 

 bristles. 



The penis is of moderate dimensions and protrusion, without terminal expansion. 



Papilio CniLURKX.1% Cray. (Plate XXXI. figs. 10-18.) 



Valve sabtrigonal, pointed, nearly equal-sided, sparsely fringed with hair-scales, and besei 

 with hairs, pointing inward from the ventral margin, and specially crowded near the tip. 



Harpe nearly coextensive with the valve, springing from the entire base, and forming 

 a concave triangular plate, with both lateral edges thickened, and a strong ridge running 

 up near the middle. The ventral edge rises from an expanded hollow base, like the 

 trunk of a tree, sending oif near its middle point a stout sharp erect spine ; at its end, 

 where the central ridge meets it. both expand into a sort of hollow hand, turned up and 

 curved-over ventrally, having the short fingers of glittering black chitine on half of its 

 semicircular edge, the rest being a smooth wall. The dorsal edge of the harpe stands 

 close to the edge of the valve, from which it rises into a thin wall of considerable height, 

 leaning inwards, fringed along its summit, bearing a row of fine hairs. 



The chief feature remarkable in the abdominal organs is the penis, which is rather thick, 

 and so long as to protrude beyond the closed valves ; its hue is pale chitine-yellow ; its 

 expanded orifice is filled with the white pulpy tissue, which swells beyond the margins; 

 and there are, on the column, successive marks, which are repetitions of the terminal 

 outline. (See the same organs in Orn. Raliphron, p. 285, supra; PL XXVI. fig. 7.) 



Papilio Sesostris, Cram. (Plate XXXI. fig. 19.) 



The general type is that of P. Childrena; and the similarity is greater (considering 

 the complexity of the armature) than I have observed in any two forms which may 

 be considered species, or even marked varieties. Yet there are numerous diversities 

 between these two. 



The valve is of a different outline, parallel-sided and rounded, instead of trigonal 

 and pointed ; it is more distinctly fringed, along the dorsal margin and around the 

 end, with close-set hair-scales. 



The harpe, while of the same pattern, is much modified. Its ventral edge is straight, 

 the solitary spine placed nearer the base, and reduced to a wart. The ridge is now the 

 principal feature, which in P. Children^ is secondary ; it is more curved. The hand-like 

 tip is similar in form ; but the short blunt fingers, curving over the cavity, are replaced 

 by sharp teeth, curved like the spines of a rose, nearly in the plane of the valve (as 



