MB. 11. m'lAOHLAN on NEW-ZEALAND TEICUOPTEBA. 207 



the cellula thyridii ; aud oue also unites the fork of the ramus 

 clavalis with the cubitus ; pterostigma concave beneath : poste- 

 rior wings shorter and broader than the anterior, folded, rounded 

 at the apex ; fringes long on the dorsal margin ; hairy clothing 

 slight, hence the wings are subhyaline ; neuration more dis- 

 tinct ; subcosta and radius running close together ; apical forks 

 1, 2, 3, and 5 present ; no closed discoidal cell ; a transverse 

 veinlet unites the upper branch of the ramus discoidalis with 

 the radius ; a second unites the lower branch of this ramus with 

 the ramus subdiscoidalis ; and a third is placed below this, much 

 nearer the base of the wing. 

 Abdomen slender in the 6 , more robust in the ? ; the last ventral 

 segments with projecting teeth ; appendices very complicated. 



This genus is allied to PsilocJiorema, but is nevertheless quite 

 distinct. 



Hyduobiosis frater, n. sp. 



Fusca : antenna; fuscae, flavo annulatae : vertex nigricante cinereoque 

 pilosus : ocelli magni, flavi : alae anticse nigro cinereoque lanuginosa; ; 

 pterostigmate saturatiore ; venis nonnullis pallido striatis; maculis 

 indistinctis albidis ; maris margine dorsaU basin versus nigro-cristato : 

 posticEe t^ubhyalinae, fimbriis nigricantibus : pedes testacei ; tibiis 

 anterioribus intermediisque in medio annulo pallido notatis : abdo- 

 men fuscum, infra pallidius, maris dentibus tribus ventralibus. 

 Long. Corp. 6 2^', $3'"; exp. alar, d 71-81'", ? 10|-11"'. 

 [jead — antenncs fuscous, with narrow yellowish annulations, the basal 

 joint with cinereous hairs; vertex blackish fuscous, clothed with 

 blackish and cinereous hairs intermingled, as is also the face ; ocelli 

 large, yellowish ; eyes brown, with blackish markings ; palpi fuscous, 

 with hoary pubescence. 

 Thorax— prothorax with blackish and cinereous hairs; mesothorax 

 blackish-fuscous, with a tuft of blackish hairs on each wing-shoulder ; 

 metathorax blackish-fuscous, almost hairless, the metascutellum form- 

 ing a depressed elliptical space. 

 Wings— anterior wings thickly clothed with long woolly, cinereous and 

 blackish hairs intermingled, th? former predominating; these hairs 

 are principally placed on the veins in two series, those on one vein 

 crossing those on the opposing ones ; a space on the middle of the 

 dorsal margin is wholly pale cinereous, and there is an appearance of 

 a like-coloured naiTow transverse fascia before the apex; tufts of 

 longer black hairs along the dorsal margin in the c5" only; apical 

 fringes forming alternating spaces of blackish and whitish cinereous 

 hairs; pterostigma elongate, fuscous; neuration fuscous, the first 



