﻿LEPIDOPTEROLOGIE COMPAREE 43 



however comparée! with the différences between Argus and 

 Aegus. They are fairly comparable with différences that 

 I showed to exist in différent forms and races of tlie allied 

 species Aegon {Argus) in Plates A and B in the Proceedings 

 of the Entomological Socieiy of London for içoç. 



A spécimen from Budapest, taken by M. Sheldon, which he 

 has kindly allowed me to examine, proves to be Aegus; a notable 

 extension to the habitat of this form. The falces of thèse species 

 differ in a point that deserves mention. In Argus, Aegus and 

 Micrargus, the straight portion does not rapidly become thinner, 

 but before the extremity is hollowed out on one side, so as to 

 form a rather long open hook. In Melïssa and Sareptensis, it 

 tapers regularly and ends in a very small hook. (See photo- 

 graphs.) 



The maie genitalia of Argus hâve the dorsal hooks {falces) 

 fairly broad and with a regular sweeping curve from their origin 

 to where the last half becomes straighter, but not quite straight. 

 The terminal toothed process {harpe) of the claspers has a 

 marked angular bend at the neck, or one might say its dorsal 

 margin is deeply recessed before the extremity, the teeth number 

 9 to 12 varying in différent individuals rather than in races 

 and are much bolder than those of Aegus. 



In Aegus the hooks, falces, are more de&nitely angled before 

 the straight portion is reached, and this straight portion, is a 

 good deal longer than in Argus and much more entitled to be 

 called straight. 



The toothed end of the clasp, has very little of the recessed 

 margin below the head. The teeth are very much smaller, rather 

 more numerous than in Argus, and with a much greater tendency 

 to become evanescent at the lower end of the margin, so that 

 counting them is difficult. The individual variations in the two 

 species never approach each other near enough to suggest that 

 further variation might bridge over the différence. 



I hâve not been able to detect any différences in the aedeagus, 

 not having amongst my mounted spécimens a sufficient number 



