The Tibiae are normally all spined, the fore-tibiae but slightly, 

 and in some instances we have met with specimens where the spines 

 were lacking; the mid and hind tibiae are always strongly and heavily 

 spined. A tibial epiphysis is present in all species and the mid and 

 hind tibiae each possess a single pair of short, stout, apical spurs. 



The Venation, as already pointed out, is typically Hespcriid ; 

 the 5 branches of the radius on primaries arise from the cell, equi- 

 distant from each other ; vein ]\L, is weaker and much closer to M., than 

 to Mj ; the cell is equal in length to about 2/3 of the costa. A peculiar 

 specialization of structure is noticeable in the 5 5 of most of the 

 species ; this has been already noted by Comstock and consists in the 

 fact that vein Cu, is bent downwards at the base and approached to 

 Cuj to a greater or less extent; it reaches its greatest degree of de- 

 velopment in strcckcri where both veins arise almost from the base 

 of the cell. This specialization is supposed to add greater force to 

 the downward stroke of the wing. 



Although there is usually a certain amount of sexual dimorphism 

 present, manifest in the width of the band of spots on the primaries, 

 in only two instances have we noted the presence of any secondary 

 sexual characters ; in strcckeri and smithi the S S have the basal por- 

 tion of the hind wings covered with long hair; in strcckcri there is a 

 further patch of similar hair at the base of primaries on the underside 

 but our specimen of smithi (a rather worn one) does not show this. 

 It is possible that this characteristic may occur in indecisa, a species 

 unknown to us, as it appears from the figure to be closely related to 

 smithi. 



The Sexual Organs in both sexes have proved of excellent spe- 

 cific value and we have made as extended a study of these as our ma- 

 terial would allow. For the terminology of the principal divisions of 

 the S organ we would refer to our paper in the Can. Entomologist, 

 Vol. XLIII, p. 181 ; in the place of "Scaphium," however, the new 

 term "Gnath" is employed: Dr. Chapman has recently shown (Ent. 

 Record XXIII No. 11, 1911) that the Scaphium of Gosse as occuring 

 typically in the genus Papilio is supra-anal, in spite of Gosse's state- 

 ment that he imagines he has seen the anal opening between the uncus 

 and scaphium ; Chapman therefore proposes the new term "Gnath" 

 for what has almost universally been designated as the Scaphium. 



The Uncus is broad at the base, the point of division from the 

 I2th tergite being usually marked by a distinct lateral indentation; 



