198 MR, E, M'LACnLAN ON NEW-ZEALAKD TRICHOPTEUA. 



radius by a transverse veinlet ; discoidal cell somewhat similar 

 to tliat in the anterior wings ; an oblique transverse veinlet 

 uniting its lower edge with the ramus subdiscoidalis, wliicli 

 ends in a long fork ; the fii'st costula ends in a fork, the others 

 are simple. 



Abdomen short and slender ; a forked lobe proceeds from the 

 middle of the last segment above ; the penultimate segment 

 is furnished beneath with a broad and obtuse lobe extending 

 beyond the apex ; appendices complicated. ( c? •) 

 This singular genus is very marked in its characters. In the 



scales of the wings it shows an aflinity with Mormonia, but in its 



general characters it comes nearer >S'*7o and Pycnocentria. The 



hairy (or spiny) tibial spurs are peculiar. 



Olinx Fbredayi, n. sp. 



Fusco-castanea : antennse flavae, fusco-annulatae, articulo basali infra 

 nigro- fimbriate: vertex utrinque palpique maxillares jiallide ochraceo- 

 penicillati: alae anticse posticfeque fuliginosae,griseo-flavo-squamulosa;, 

 illffi sulco flavo-am'iantiaco-squamuloso : pedes flavo-ocliracei : abdo- 

 men fuscum, segmento ultimo dorsali in lobum bifidum prodiicto, 

 segmento antepenultimo ventrali lobo late obtuse instructo. ( <? .) 



Long. Corp. 2^'" ; exp. alar. 9'". 



Head — antenna; yellow, each joint (except the basal) slightly fuscescent 

 and thickened at its apex ; basal joint beneath with a fringe of strong 

 black hairs; from each side of the vertex, near the margin of the 

 eyes, proceeds a fringe of long, inturned, silky, pale-oclueous hairs, 

 forming a tuft between the basal joints of the antenna; ; tuft of the 

 maxillary palpi also pale ochreous ; labial palpi of the same colour ; 

 eyes fuscous. (Plate II. fig. 2d.) 



Thorax — prothorax clothed with long pale-ochreous hairs; meso- am\ 

 metaihorax shining pale castaneous. 



Legs pale yellowish-ochreous, clothed with like-coloured pubescence; 

 on the anterior tibise and tarsi, and intermediate tibiae, are adpressed 

 blackish spine-like hairs, which also clothe the spurs on these tibiae ; 

 the spurs on the posterior tibiae are only slightly covered with the 

 ordinary pale and procumbent pubescence; all the tarsal joints are 

 furnished beneath with sparse short spines, and the claws arc very 

 sliort. 



Winys — anterior vnngs smoky ; the scales greyish-yellow ; the sub- 

 apical furrow ai)]>eurs very conspicuously yellow, in consequence of 

 the scales being there so much denser; the fringe of the inturned 

 lobe at the base of the costa is black ; neuration darker : posterior 

 wings pale smoky, scarcely subhyaline, the costal edge faintly yeU 

 lowish ; fringes smoky cinereous. (Plate II. fig. 2.) 



