B¥ R. J. TILLYARD. 233 



EUSTHENIOPSIS RETICULATA Klap. MS. 



In the British Museum Collection there is a single specimen carrying a lahsl 

 '•Eustlienia reticulata Klap." I can find no record of any published description of 

 this insect by Klapalek, and I assume that he must have studied the insect and 

 attached the .MS name to it, but that his description has never been published. 

 1 propose, therefore, to retain the name reticulata given by him, and to indicate 

 the special characteristics of the species. 



Pronotum with strong lateral ridges and strongly marked antero-latei'al angles. 

 Forewing with all the main veins and cross-veins strongly outlined as a pale reti- 

 culation. Subhumeral oval mark completely swallowed up in a laige whitish 

 basal patch, which is followed distall\' by a dark sub rectangular patch. There is 

 no red radial stripe on the forewing. Luuulc rather narrow, very distinct, stretch- 

 ing right across the forewing. Hiudwing red basally, blackish distally, the divi- 

 sion between the two colours being eulegnic. and beginning well beyond half-way 

 along the costa. 



In general shape and appearance, this insect strongly resembles E. venosa. 

 particularly in the short, strongly rounded wings, and in the very strongly marked 

 pale reticulation. It differs, however, in the remarkable form of tlie pronotum, and 

 in having the basal area of tlie hiudwing red instead of purple. 



Type: Holotype ? in British Museum Collection. 



Hab. — Ta.smania. 



Subfamily STENOPERLINAE, n.subfam. 

 Characters as given in the Key on p. 224. 



Key to the Genera. 



Very large insects, expanding 80 mm. or over; antennae nearly as long as forewing; 

 pronotum half as wide again as long; costal series of veinlets complete and 

 abundant in fore and hind wings; cross-veins between M and Cui.in forewing all 

 connected by short cross^bans. so as to form two rows of cellules. 



DiAMPHiPNOA Gerst. 

 Genotype, '/?. aiinulata (Br.) 

 Moderately large insects, expanding from 50 to 70 mm. ; antennae from one-half 

 to two-thirds as long as forewing; pronotum somewhat heart-shaped, about 

 as wide as long; costal series of veinlets few and incomplete, there being 

 always a long gap between the humeral v.einlet and the next one; cross-veins 

 between M and Cui in forewing normal, forming only a single row of cellules, 



only occasionally connected by a cross-bar Stenoperla McLach. 



Genotype, S. prasiiia (Newm.). 



Genus Sienoperla McLach. (Plate .xv., Fig-s. t), 10.) 



Characters as given in the generic key above. 

 Genotype, Stenoperla prasitia (Newman). 



Key to the Species. 



Forewings bright green, hindwings pale, tinged with green. New Zealand. 



S. prasitia (Newm.1 



Forewings mottled grey, hindwings tinged with orange pink basally and on anal 



fan, mottled grey distally. Australia S. aus/ralis, n.sp. 



Stexoperla'^rasina (Newman). (Plate xv.. Fig. 0.) 



Newman, Zoologist, vol. iii., 1845, p. 852 (under Chloroperla). 



This well known insect is quite common in many parts of New Zealand though 

 in places its numbers have been greatly diminished by the introduced trout, of 

 which the larva forms a favourite food. 



