BY H. H. KARNY. 65 



joints pale brown; the third (i.e., the first long) joint of the 

 same colour, but dark at the tip, the following joints blacldsh- 

 brown. First joint of hind tarsi with 20, second joint with 4 

 ctenidia ; each ctenidium with about 6 teeth. Claws slender, 

 with a sharp tooth before the apex. Length of hind tarsal 

 joints : 1 0.6 mm., II 0.24 mm. 



Fore wings (Plate 3) more than three times as long as 

 wide. Eadial sector communicating with media for some 

 distance. Areola postica very broadly united with medial vein. 

 Coloration similar as in P. brioi Enderlein, P. Tnali Okamoto 

 and especially P. kurokianiis Enderlein, but not quite agreeing 

 with any of those species (vide fig.). Hind wings hyaline; 

 radial sector united with medial vein for a relatively long 

 distance (about as in P. kurokianus , longer than in P. mali, 

 shorter than in P. hiroi). 



Length of body 3.4 mm. ; fore wings 5 ram. long, 1.5 mm. 

 wide. 



One specimen from Mt. Mumd, 6000—7000 feet, head camp, 

 coll. E. Mjoberg. 



According to the coloration of fore wings and the length 

 and structure of tarsal joints coming between the New Guinean 

 P. hiroi and the Japanese P. kurokianus and P. mali. The 

 second joint of hind tarsi is relatively shorter than in both 

 these Japanese species, but longer than in P. hiroi. Accord- 

 ingly it has many less ctenidia than in P. mali and 

 P. kurokianus; in regard to P. hiroi, Enderlein did not 

 mention their number. 



Hemipsocus hyalinus Enderlein. 



1906. Enderlein, Stett. Ent. Zeit., p. 311. 



1907. Okamoto, Trans. Sap. Nat. Hist. Soc, ii, p. 135. 



General colour dark bi-o\\n, nearly black; pale brown when 

 freshly emerged. Tlie two basal joints of antennae brown, 

 all following ones brownish-black. As Enderlein and Okamoto 

 described the colour as much paler, I think their descriptions 

 may have been based on freshly emerged specimens. I 

 cannot separate the Bornean specimens before me from the 

 Japanese species by reason of these colour differences, because 

 they agree with those in all other respects perfectly. Length 

 of hind tarsal joints : I 0.8 mm., II 0.16 mm. Number of 

 ctenidia as stated by Enderlein. Fore wings hyaline ; radial 

 sector communicating with medial vein for a rather short 

 distance. Cross vein between media and areola postica 

 extremely short. 



