the British Neuraptera-Planipennia. 187 



referred this variety to Umhatus. In the collection of 

 the British Museum a second insect has been placed with 

 Stephens' unique type under the same label. This second 

 example is really a very dark Umhatus, but not so the 

 first. I have a specimen that I took at Rannoch, in 

 1865, which agrees almost entirely with the type. Both 

 examples are females, but I believe I am correct in 

 referring them to suhnebulostis . 



12. Hemerobius nervosus, Fabricius. 



Hemerohhis nervosus, Fab. Ent. Syst. ii. 85 (1793), 

 and other authors. H. nehulosus, Steph. 111. vi. 107 

 (1836), part. H. conspersus, Burm. Handb. ii. 974 

 (1839). Mucropalpus distinctus, Ramb. Nevrop. 421 

 (1842) ; Costa, Faun. Nap. 9, pi. x. fig. 6. 



Ochreous, the sides of thorax broadly shining blackish ; 

 a narrow median blackish horizontal line ; face shining 

 blackish ; antenncB yellow, with narrow fuscous rings. 



Ahdomen dark fuscous, with pale golden hairs, and a 

 reddish lateral line in the ? . In the $ the appendices 

 are yellow, blackish at the tips, long, regularly curved, 

 band-like or sub-cylindrical, slightly acuminate and 

 obtuse (PI. X. fig. 9) . In the ? the apex of the abdomen 

 is obtuse, or sub-truncate. 



Legs pale yellowish ; tarsi fuscous at the tips ; anterior 

 and intermediate tibiae semi-fasciated, owing to fuscous 

 marks which appear externally only, and are not con- 

 tinued beneath. 



Wings elongate, elliptical at the apex : anterior pair 

 whitish, clouded with grapsh- cinereous, and strongly 

 spotted with dark fuscous, especially about the gradate 

 veinlets and towards the dorsal margin ; margins fuscous 

 and whitish in alternate spaces ; longitudinal veins and 

 costal veinlets black, strongly interrupted with white, 

 hairs whitish ; three sectors ; gradate veinlets black, seven 

 in the outer series, six in the inner, and three or four 

 towards the base ; second post-costal celhde open : 

 posterior pair with blue iridescence, hyaline, the margins 

 often grayish ; veins for the most part black, but some 

 of them with long white spaces. 



Length of body 3-3j lines ; expanse of wings 8-9 lines. 



In Britain not nearly so common as H. suhnebulostis, 

 and decidedly unfrequent about London. A very abun- 

 dant continental species. 



Varies greatly in the number and size of the black 

 irrorations. 



