308 ME. P. H. GOSSE ON THE CLASPING-OEGAJNTS 



where they are longest ; then suddenly cease, giving place to a series of very fine shinin 

 hairs, which spring from the cavity, within the ventral margin, and reach heyond it. 

 The whole valve-floor, which is of a bright brown hue and has a velvety texture, is more 

 or less studded with gilded hairs. 



The harpe is a slender rod, black and polished throughout, affixed to the lining- 

 membrane, parallel with the ventral margin nearly to the valve-tip ; then it makes 

 a sudden bend, and projects as a curved acute spine-like point as far as the ends of the 

 dorsal margin-scales. From the bend onward the rod becomes free, springing from 

 the cavity-floor, but proceeding laterally, nearly in its plane, the taper point describing 

 a full semicircle, curving at last quite upward. It is a simple polished wire, densely 

 set along its inner side with long shining hairs, but quite void of serration in every 

 part. 



The abdominal organs present some peculiarities of form. The -miens is unusually 

 broad and short, taking the shape of a very wide but pointed spoon-bowl, clothed 

 almost to its termination with coarse, brown body-scales, among which individual blue 

 scales gleam Hke tiny sapphires. 



The scaphiani is of moderate size, its most conspicuous feature being the lateral 

 teeth. The ridge, or cheek, on each side carries a stout and strong spine of polished 

 black chitine, which projects horizontally forward at first, and then bends up at the 

 point, the secondary tooth being represented by a low conical knob at the base. The 

 whole tooth is beset with long bristles, especially about the middle ; but immediately in 

 the vicinity of the point these are very few and minute. High magnifying power shows 

 (fig. 8) that, as in P. Merope, the scaphial teeth arc themselves toothed ; but here the 

 notching is shallow, and the minute bristles, instead of being seated on the summits of 

 the toothlets, are sunk in the insterstitial angles. 



The penis is moderately large and protrusile, bending upward and outward its column 

 of brown translucent chitine, and terminating in a dilated, but not expanding, orifice. 



Papilio Phokcas, Cram. (Plate XXX. fig. 9.) 



Valve small, but comparatively long and narrow, and slightly fringed. 

 Harpe of the very simplest form, a mere narrow rod-like elevation of the chitine, 

 running, in a slightly bent line, throughout the length of the valve, and terminating in 

 a fine smooth point, Avhich protrudes even a little beyond the fringing hair-scales. The 

 whole rod is of polished dark brown chitine. (PI. XXX. fig. 9.) 



Uncus well developed, long, slender, curved into a nearly complete semicircle. The 

 adjacent parts present nothing calling for special notice. 



Here is a very close ally of P. Mreus, a West-African species (the specimen labelled 

 as captured at Accra), yet widely differing from both it and its nearer compatriot 

 P. Bromius, in the form of the genital armature. It approaches the Oriental P. Ulysses 

 and P. Arcturus in the form of the harpe, but exceeds both in simplicity. 



Papilio Thoas, Linn. (Plate XXX. figs. 10, 11.) 



In this noble American butterfly, so abundantly found from Virginia to La Plata, we 

 have a new type of valval armature. The outline of the valve is rotundo-triangular, 



