202 The Philippine Journal of Science i9i6 



In appearance this species is very similar to Amphipsocus 

 unitus, but the latter has no distinct marks on head, and the 

 stigma has the posterior spur. 



Genus CmClUUS Curtis 

 Key to the species. 



a\ Veins with dark dots and several brown clouds guttulatus. 



a^ Veins without dark dots. 



6^ Radial fork arises before first fork of the cubitus; faint dark marks at 



stigma and ends of veins insequalis. 



6^ Radial fork arises beyond first fork of the cubitus; wing un- 

 marked casteUus. 



Csecilius castellus sp. nov. Plate II, fig. 11. 



Pale yellow ; mid lobe of mesonotum brown ; legs and antennae 

 very pale. Wings long and slender, faintly yellowish, more 

 distinctly so in costal half ; venation pale, but apical forks dark ; 

 stigma long and slender; radius and median united at one point, 

 fork of radius about halfway between the forks of the median; 

 areola postica very small and much longer than high. In hind 

 wings upper branch of the fork vertical to the anterior m^gin 

 and nearer to the other fork than to the tip of the wing. 



Length to tip of wings, 2.8 millimeters. 



Luzon, Laguna, Los Baiios {Baker). Two specimens. 



Csecilius guttulatus sp. nov. Plate II, fig. 12. 



Grayish; nasus faintly lineate with reddish; vertex with four 

 reddish spots; antennae rather dark, the short joints beyond 

 middle dark, but with snow-white apices; thorax with several 

 rufous spots ; legs pale, tibiae with dark tips, tarsi dark. Wings 

 hyaline, rather short; venation as figured; venation pale, with 

 prominent dark dots on all except anal vein ; dark clouds at ends 

 of veins ; stigma short, rather suddenly truncate, mostly occupied 

 by dark clouds, one of them continued back to radial sector, and 

 another above areola postica; a small dark cloud above cubitus, 

 and two others toward base of wings. Hind wings hyaline, with 

 brown venation. Head broad; eyes small. 



Length to tip of wings, 2.9 millimeters. 



Luzon, Laguna, Mount Maquiling {Baker) . 



Csecilius insequalis sp. nov. Plate II, fig. 13. 



Pale yellowish; basal joints of antennae reddish. Wings 

 hyaline, venation pale, but dark and with a narrow dark margin 

 near tip, an apical brown cloud in the stigma, and a spot at 

 end of anal vein. Wings rather slender; stigma long, slender, 



