58 CATALOGUE OF MOTHS. 



ton-on-Tees, W. Sibson. Newman calls this the " Wood Swift," 

 but I never found it in any of the woods about Hartlepool. It 

 is very common on the Greatham Salt Marshes and south of the 

 village, and may be taken in any number by looking on the grass 

 after dusk with a lantern. It is equally common on the dry 

 sand-banks to the north of Hartlepool and on the Railway 

 embankments. The males fly at dusk in search of their mates, 

 who sit on a grass stem vibrating their wings to diffuse the 

 attractive odour which emanates from glands in their hind legs, 

 much as in the last species. 



5. H, Velleda, Esp. The Northern Swiet. 



Hepialus Velleda. Staint. Man., vol. i., p. 111. 

 „ ,, Newm. Brit. Moths, p. 20. 



,, ,, Barr. Lep. Brit. Is., vol. ii., p. 161. 



,, „ Meyr. Hdbk. Brit. Lep., p. 800. 



Larva. Buck., vol. ii., pi. xxx., fig. 4. 

 Another abundant species, occurring in woods as well as on 

 open ground. The habits of the insect are as in the last two. 

 I have never observed the mode of attraction, nor am I aware it 

 has been noticed, but the flight of the males so closely resembles 

 that of Lupulinus and Sylvinus, that there is no doubt on the 

 point. The males fly exceedingly quickly and in such an erratic 

 manner that they are very difficult to capture on the wing. I 

 have seen both sexes, though very rarely, at rest on tree trunks, 

 but never so low down as obtains with Hectus. This I cannot 

 explain, as the insect flies low when on the wing. The records 

 for the two counties are as follows : type and var. Camus, T wizell 

 List. Alnmouth, W. Maling and M. Henderson ; Thornley and 

 Gibside, "abundant among ferns and very variable," T. H. Hed- 

 worth ; Ornsby's Durham; Hoffall Woods and var. Camus, 

 "W. Backhouse; Satley, J. W. Fawcett; Upper Teesdale, T. A. 

 Lees ; ''not so common about Bishop Auckland as others of the 

 genus," Geo. Eoss ; "Da" (Darlington), Stainton's Manual. 

 It is common in and near Hesleden Dene, Hartlepool, also the 

 unicolor variety Camus, which probably occurs wherever the 

 species is found in our counties. 



