1869.] 



239 



ON A NEUROPTEROUS INSECT FROM N. W. INDIA, BELONGING TO 

 THE GENUS DILAR. 



BY R. McLACHLAN, F.L.S. 



The species of the singular genus Dilar are apparently extremely 

 rare, and until recently I had never seen a representative of that 

 genus, and do not think that any existed in this country, either in 

 private or public collections. Up to the present time five species 

 have been described. 1. D. nevadensis, Eambur, from the Sierra 

 Nevada in the South of Spain (the typical species) ; 2. D. meridional^, 

 Hagen, from the same locality (unique) ; 3. D. turcicus, Hagen, from 

 Armenia and Syria ; 4. D. partheiiopcBus, Costa, from Naples, perhaps 

 identical with No. 3 ; 5. D. Nietneri, Hagen, from Ceylon {vide Hagen 

 in Stett. Ent. Zeit., 1866, p. 291 et seq.). Within the last few weeks 

 I have found another species, from North-West India, in a collection 

 made by Mr. Horne, but only represented by males. All the species 

 are much alike, differing chiefly in the formation of the anal parts, a 

 character not easy to discriminate in dry specimens. 



The males of Dilar, which at first sight look much like species of 

 Hemerohius, are especially remarkable for longly pectinate antennae, 

 which are found elsewhere in Neuroptera only in some species of 

 Chauliodes* 



Mr. Home's insect I describe as follows : — 



DiLAB HOENEI, n. sp. 



Fusco-castaneus, abdomine pilis longis pallide-Jlavis vestito. An" 

 ienncB griseo-fusccB, plus minus ^^-articulatce ; articuUs 4 — 21 singulatim 

 processu elongato instructis. Alee anticce albido-grisece, griseo confertim 

 punctatcevel reticulates ; punctis duohus discalihus {quorum unumin medio, 

 alterum basin versus situm) punctisque circum marginem apicalem, satura- 

 tioribus : posticce punctis prceter disco-medianum fere obsoletis. Pedes 

 Jlavi, pilis longis concoloribus vestiti. Abdomen fuscum ; valvis analibus 

 jimbriatis,flavis. Long. corp. 2'"; exp. alar. 11"'. 



Kead castaneous, sometimes slightly suffused with blackish ; a 

 large rounded tubercle on each side of the middle, and the raised hinder 

 margin, yellowish with yellow hairs ; face fuscous, a deep and broad 

 transverse sulcus before the clypeus ; mandibles prominent, yellow, 

 produced into an acute piceous point. Antennce grey, with short 

 greyish-yellow pubescence; about 27-jointed; basal joint fuscous; 

 third joint with a short tooth, the 4th to the 21st, each with a long 



* Euptilon, which is foundtd on a figure in Drury, and is represented with pectinate antennae, is 

 most probably mythical.— R. McL. 



