HuTTON. — Oil Neiu Zealand Neuroptera. 211 



Family PSOCID^. 



Small insects with oval bodies and very small prothorax, 

 which is partially concealed by the wings. Wings unequal 

 in size, the fore pair larger, with few or rudimentary ner- 

 vures. The larvae live on tree-trunks, palings, &c., and are 

 much like the adult. They are very active. Both sexes are 

 said to possess the power of spinning a web. The common 

 book-lice belong to this family, which has been much ne<^- 

 lected by New Zealand entomologists. 



Genus Myopsocus, Hagen (1866). 



Tarsi 3 -jointed. Discoidal cell closed. Four posterior 

 marginal cells. 



Myopsocus novae-zealandise. 



Myopsocus novcB-zeakuidicB, Kolbe, Entomologische Nachrich- 

 ten, ix., p. 145 (1883); McLachlan, Ent. Mo. Mag., ser. 2, 

 vol. 5, p. 270 (1894). Psocus zealandicus, Hudson, Man. 

 N.Z. Entomology, p. 107, pi. 16, fig. 2 (1892). 



Fuscous, the vertex with a clear spot in the middle. 

 Wings grey, thickly sprinkled with brown, the spots at the 

 extreme margin and in the disk confluent ; cells of the fore 

 wings with an irregular semilunar spot at the exterior mar- 

 gins ; pterostigmata reddish -brown, trigonal, the interior 

 margin broadly concave ; nervures variegated with black and 

 white ; the first discoidal cell irregular, the anterior nervure 

 one and a half times the length of the posterior ; the fork 

 elongated. Legs brown ; femora blackish, the knees reddish ; 

 tibiae black at their apices; first joint of the tarsus pale-red, 

 the two last joints black. Length with wings, 5-6|-mm. 



Locality. — Wellington. 



The types of this species were sent by me to Mr. E. 

 McLachlan in 1873. 



Family PERLID^. 



The stone-flies have the antennae setaceous, with numerous 

 joints ; the mandibles are generally rudimentary, but labial 

 palpi are present. The prothorax is large. The abdomen is 

 long, flattened, and with parallel sides ; and there are gene- 

 rally two caudal setae. The wings are unequal, the posterior 

 ones broader, triangular in shape, and longitudinally folded 

 when at rest, in which case they extend beyond the abdomen. 

 The legs are widely separated, and the tarsi are 3- jointed. 

 The larvae resemble the adult, except in being wingless. They 

 are found in streams, under stones. The nymph (or pupa) is 

 active, with prominent wing-pads. 



