GO [August, 



Genus IIemerobtus, Linn. 



H. HUMTILI, L. 



Madeira. 



At first I was not certain whether this specimen would not form a 

 distinct species, closely allied to humuli. Now, I find it impossible to 

 separate it. The co\oviY&, fades, and markings are absolutely identical. 

 The differences consist in that the Madeiran example possesses four 

 sectors in the anterior wings, while hvmuli has only three. But this 

 diflference should lose its value, because one finds in allied species (e. g. 

 H. nervosus) similar variations. Also the first series of gradate nervules 

 is interrupted at the commencement, as in H. maculattos of Wesmael. 

 Having compared M. Wesmael's type, which is only a variety of htimuli, 

 this diflference becomes of little importance ; besides, H. humuli, being 

 common in all Europe, and even in Asia, frequently offers very re- 

 markable varieties. 



No. 29. 



H. NEBVosus, Eabricius. 

 Madeira. 



I had suspicions that these specimens would form a distinct species, 

 allied to H. nervosus ; especially because the wings are shorter, broader, 

 and more rounded at the apex. I think it more prudent, however, to 

 refer them to nervosus ; which species, being very widely distributed in 

 Europe, varies much, even in the shape of the wings ; for I possess 

 similar examples from different countries, and even from Prussia. Any 

 way, it will be necessary to have a greater number of specimens in 

 better condition, to enable me to be sure of the identity. 



Nos. 30, 31, and 32. 



Genus Chrtsopa, Leach. 

 C. VULGARIS, Schneider. 



Madeira. 



The partition vein at the base of the wings, ending before the ad- 

 joining cell, strongly marks this species, which is found in all parts of 

 the world. 



I do not know the species indicated in " I'Histoire des Isles Cana- 

 ries " by M.M. Barker, "Webb, and Bertholet ; these are C. alius and 

 C. Jlaviceps of Brulle ; the latter is spotted with black, but the deter- 

 mination is impossible. 



Nos. 20-24. 



