THE CANADIAN ENTOMOLOGIST. 



digitules are of unequal size, one being small and fine, with the end but 

 slightly expanded ; the other larger, with the end flat and widely expanded. 

 Tarsal digitules also of unequal size, one being longer and thicker than 

 the other. Rostral loop long, folded upon itself and extending to the 

 anal plates. Length, .335 mm. 



Hab. — Ypiranga, State of Sao Paulo. Abundant on branches of 

 Maytenus, sp. 



THE NEURATION OF ARGYNNIS. 



BY A. RADCLIKFE GRO'lE, A. M., HILDESHEIM, GERMANY. 



In my examination of the types indicated by Mr. Scudder I have 

 been quite unable to separate Acidalia niphe, Scudd., Gen. 101, from the 

 type of Argynnis. This latter type, A. ag/aia, L., is characterized by the 

 second radial branch of primaries running so close to the main vein, for 

 a distance beyond the median cell, as to form a minute false accessory 

 cell above the angle of the radius which the crossvein joins. Since this, 

 as well as all other features, are repeated in the wing of Jiiphe, I conclude 

 the genus Acidalia of Hiibner, as founded on this species, must be 

 dropped. Another type, Dryas paphia, can hardly be retained as dis- 

 tinct from Argynnis from the neuration. The only difference is, that 

 the second radial branch, in running propinquitous, leaves the main vein 

 at somewhat before the point chosen in aglaia and niplie. Indubitably 

 paphia is a species belonging to the same phylogenetic group, a trifle 

 isolated. On the other hand, neither Issoria lathonia nor Brenthis hecate 

 share the character of the appressed second radial branch of Argytinis 

 and should be separated from this genus. I'he differences in the neura- 

 tion between Issoria and Brenthis are very small and comparative ; in 

 both the second radial branch is not appressed and leaves the main vein 

 above the median cell before the point of juncture of the crossvein. The 

 point of departure in Issoria is a little outwardly removed and the pro- 

 pinquity is so great that one can see that it requires but little to make the 

 branch decumbent. Issoria differs further by the angulate papery wings 

 and by the fact that the crossvein on hind wings is but a faint scar be- 

 tween second median branch and cubitus. In Brenthis the crossvein is 

 as in Argynnis, a rather strong scar, and joins inferiorly the third median 

 branch ; whereas in Issoria the point of juncture is opposite the first 

 cubital branch. It is a small distinction, but it reveals the fact that in 

 Issoria the breaking up of the median series has progressed further. A 

 parallel difference, more widely expressed, separates the two series of the 

 Satyrids. 



I leave out of this series the generic types of Melitcea, which are 

 more specialized by the entire disappearance of the crossvein between 



