NEUROPTERA 8i 



(9) Psocus oahuensis, sp. nov. 



I have not seen the Z of this species ; the female is very Hke that of P. dis- 

 tinguendus, to which it is closely allied. The mesothorax is highly polished, the 

 abdomen has bright yellow transverse stripes above. It may be distinguished by the 

 evidently wider and more distinct submedian dark fascia of the anterior wings ; the 

 absence of the black spot on the cubitus at about the middle of its length, and that on 

 the transverse portion of the inner branch of the same nervure is almost obsolete. 



Expanse 10 mm. 



Hab. Waianae Mountains, Oahu. 



(10) Psocus lanaiensis, sp. nov. 



Somewhat similar in general appearance to the other Hawaiian species. The 

 anterior wings have a more or less evident transverse median band, the pterostigma 

 contains a large dark spot, and there is another adjoining this, without it. The radius 

 is pallid, a character which readily distinguishes the species from any of the preceding. 

 The cubitus is also often pale (yellow), but sometimes infuscate. Elsewhere also the 

 nervuration is widely interrupted by pale spaces, but the terminal furcations of the 

 nervures are always dark. 



The face in the ^ in front of the ocelli bears a yellow mark enclosing a dark spot : 

 around the ocelli it is dark ; in the $ the face is pale with dark markings ; antennae 

 very long, and towards the base in the ^ clothed with rather long hairs ; the eyes 

 exceedingly large, the width of one of them even greater than the distance (where 

 least) between their inner margins ; in the ? the eyes are small and distant. 



Mesothorax dark with yellow margins, and sometimes a median yellow stripe. 

 Abdomen more or less pale above. 



Expanse 8 — 8-5 mm. 



Hab. Mountains of Lanai. 



(11) Psocus sylvestris, sp. nov. 



Very closely allied to the preceding, but the ? has the mesothorax pale. The $ 

 appears to vary somewhat in this respect ; it may be distinguished, however, by the 

 less conspicuous pubescence of the third joint of the antennae, and the hairs on the 

 lower side of this joint are less erect. 



Expanse as in the preceding species. 



Hab. Kona, Hawaii (4000 ft.). 



II — 2 



