IN CEETAIN LEPIDOPTERA. 295 



fig. 2, the longitudinal portion is shown, laterally, more magnified, and viewed as a 

 transparent object on the stage of the microscope. It now appears still more like a 

 knife-blade, of thin material, transparent, but of a deep yellow hue, the surface studded 

 with numerous minute round eminences, each of which is surmounted by an erect 

 bristle. The inferior, adhering edge, is thickened into a narrow rim, which is fringed 

 with a row of close-set short hairs which grow in a direction across the blade. The free 

 edge is notched into a number of minute saw-teeth, not quite uniform in size or distance. 

 These serrations are seen only on the blade proper, the free terminal fourth. 



The abdominal armature is normal, the miens, the scaphium, and the penis, being all 

 well developed and of ordinary proportions. When the valves are in place and closed, 

 the tips of the two harpe-blades meet close to the tip of the uncus. The scaphial 

 " double teeth " have this peculiarity: the inner (base-ward) member is obsolescent ; the 

 outer stands up quite perpendicular, a straight needle of polished horn. The penis has 

 a broad expanded hiant extremity, which turns towards the right side. Fig. 3 shows 

 these parts in situ, the right valve having been detached, the left and its harpe indicated 

 in outline. 



The continental form, marked by broad red ocelli with black pupils, more or less con- 

 spicuous, at the anal angle of the hind wings beneath, has been lately distinguished, 

 even by such an experienced naturalist as Mr. Wallace, as a true species (Tr. Linn. Soc. 

 xxv. p. 47) ; and Mr. Kirby gives it a specific place as P. Agenor (Syn. Cat. 552). But 

 if any faith is due to the organs of which I am treating, the distinction cannot be 

 maintained. 



I examined a <$ , which agreed, in all essentials of form and marking, with Cramer's 

 pi. xci. A, b, whose name of P. Androgeos Mr. Wallace would retain. But I can find no 

 feature of valve, harpe, uncus, scaphium or penis, in which it differs to any appreciable 

 degree from examples of P. Memnon received from Borneo. 



Papilio Mayo, Moore. (A. D.) (Plate XXVIII. figs. 4-8.) * 



Valve agrees closely with that of P. Polymnestor. So also does the harpe, as it lies in 

 situ; perhaps still more with that of P. Memnon. But when lifted from the valve (which 

 is done with readiness) and examined separately, there is considerable difference. The 

 blade is not so regularly securiform, and the end is not so decidedly bent-over ; the 

 blade is rudely triangular, serrated with minute teeth all along its dorsal edge, and the 

 greater portion of its broad end. 



The uncus and its accompaniments are on the type which I have figured in P. Memnon. 

 The scaphium is very well developed ; and I take advantage of this to make a more 

 careful examination of the organ. 



If we compare the uncus to the upper maudible of a bird's head, Ave see a white fleshy 

 body filling the place, and taking much of the form, of the lower mandible. In this 



* Tor a few species examined, I have been dependent on loose abdomens, supplied by Mr. Arthur Doncaster, of 

 30 Strand, London, who has verified their names. These are indicated by the initials above. 



