1887.] 77 



that segments 3 — 5 appear to be somewhat yellowish at the oblique post-basal 

 suture. Oreillets very small, triangular, and acute, the lower edge with black teeth. 

 10th segment nearly one-half shorter than the 9th, its margin rounded in front, 

 only faint indications of cannee. 



Superior appendages about the length of the 9th and 10th segments united, in 

 the form of long, narrow, lanceolate leaflets, narrower at the base, with a strong 

 central longitudinal carina, sub-acute at apex ; in the basal portion beneath (or 

 internally), and on the margins are fine hair-bearing tubercles. Inferior appendage 

 one-half shorter, loiig-triangular, its apex dai'ker and slightly notched. 



Legs : trochanters and femora red, tibice and tarsi black, but the tibise are 

 blackish-piceous beneath ; claws reddish, or reddish-piceous. 

 $ unknown to me. 



Hab. : Groya, Corrleutes, Argentine Republic, 1 (J (slightly im- 

 mature and somewhat crushed), collected by Mr. Perrens. 



I believe this to be identical with yE. rtifina, from Minas Geraes, 

 indicated by Hagen without description, and another quoted name is 

 erythroneura, Selys, MS. I have a (J given to me by my friend Baron 

 de Selys with no locality-label, but bearing a pencil-label (in my 

 hand) ^' rufinervis,''^ probably an error for rufina. It is slightly smaller 

 than my type, and more adult, hence the pterostigma is darker, and 

 the red portion of the neuration not so bright. I see no structural 

 differences. 



I dedicate the species to Mr. Perrens, who on several occasions 

 has sent me extensive consignments of Odonata, &c., from Corrientes. 



I here mention ^. variegata, Pab , Syst. Ent. (and subsequent 

 works), which may ^ossii/y belong to the same group, but certainly 

 not to same species. It is indicated from Terra del Puego, and is said 

 to be in "Mus. Dom. Banks." In order to save disappointment, I 

 state that it no longer exists in Mus. Banks, and has probably been 

 long ago destroyed. 



Lewisham, London : June, 1887- 



BUTTERFLIES OCCUREING- AT DOVER AND ITS VICINITY 

 SINCE 1860. 



BY C. G. HALL. 



As our British butterflies appear to be getting scarcer, ] have 

 made the following notes with respect to those observed in this 

 district : — 



Qonepteryx rhamni. — Seen nearly every spring on fine days, but the prevalent 

 north-easterly winds of late years have diminished its numbers ; also occurs at 

 harvest time. 



