38 Mr. R. M'Lachlan on the Neuropterous 



21. Stenosmylus citrinus, n. sp. 



S. forma S. incisi. Citrinus. Frons obscurior, supra nigricans. 

 Thorax utrinque niger. Tibiae anticse et intermedin (femoraque 

 postiea) ad apices et in medio fusco semicinctae. Alse antica3 

 punctis nigris conspersse ; macula discali subapicali, nonnullisque 

 parvis ad marginem apicalem et internum albidis, nigro marginatis : 

 posticse pallidiores, punctis nigris subobsoletis solum ad costam, 

 maculis albidis nullis. Abdomen infuscatum. Long. corp. 7'" ; 

 exp. alar. 27'". 



The whole insect is of a delicate citron colour, excepting 

 the abdomen, which is infuscate ; but the colour of this part 

 is probably changed in dry examples. On the face the colour 

 becomes obscured, and below the base of the antennae it is 

 blackish. On the pronotum anteriorly there is a trace of a 

 black median longitudinal line, and the sides are broadly black, 

 with black hairs ; the meso- and metanota have the sides 

 broadly infuscate, bordered by a black line. The anterior and 

 intermediate tibiee have a black spot at each end and in the 

 middle ; the posterior femora are somewhat infuscate, darker 

 at each end, and with a trace of a black spot in the middle ; 

 all the legs are clothed with citron-coloured hairs. The an- 

 terior wings have many small black dots, those below the radius, 

 and two discal ones, larger than the others ; at the end of the 

 first branch of the sector and the upper cubital vein, before the 

 apex, is a conspicuous irregular whitish spot margined with 

 black, and along the excised apical margin and on the inner 

 margin are smaller whitish spots, margined with blackish in- 

 ternally, or with a blackish dot on each side ; the sector has 

 sixteen principal branches ; the inner series of gradate nervules 

 is rudimentary. The posterior wings are paler than the an- 

 terior, without whitish spots ; and the black dots are only faintly 

 indicated on the costal margin. 



A very beautiful insect, of the same form as S. incisus. 



Hemerobiidae. 



Genus DriEPANOPTEEYxt, Leach. 

 22. Drepanopteryx instabilis, M'Lachlan. 



Ih-epanopteryx instabilis, M'Lachl. Journ. of Entom. vol. ii. p. 115, t. vi. 

 % 4.* 



Found also in Australia without apparent specific difference. 

 Most of the New-Zealand examples (but not all) pertain to the 



t According to the characters of the genera Drepanopteryx and Mega- 

 lomus as laid down by Brauer (cf. ' Verhandl. zool.-bot. Gesellschaft in 

 Wien,' 1866, p. 987), the two New-Zealand species and the Australian 

 D. binoculus ought perhaps to be placed in the last-named genus. 



