XI, D, 3 Banks: Neuropteroid Insects 203 



evenly rounded behind; radius and median united for a short 

 distance; the radius forks a little before the first fork of the 

 median, the forks of the latter being unusually short; areola 

 postica long, highest toward base. In hind wing the upper 

 branch of the first fork is a long distance from tip and vertical. 



Length to tip of wings, 2.3 millimeters. 



Luzon, Laguna, Mount Maquiling (Baker). This species is 

 peculiar on account of the short median forks. 



Dypsocus apicatus sp nov. Plate II, figs. 14 and 15. 



Black; antennse from the fourth joint outward pale yellowish; 

 fore wings a little pale at areola postica, elsewhere black, and 

 through the middle area the surface transversely, rugosely 

 waved; apical part and stigma swollen and polished; head and 

 thorax with minute scattered whitish hairs; second joint of 

 antennae long, heavy, and plainly curved, longer than the third. 



Length to tip of wings, 4 millimeters. 



Palawan, Puerto Princesa (Baker). This species is related 

 to D. coleoptratus Hag., but the proportions in the venation and 

 basal joints of the antennae are different. 



PLECOPTERA 



This order includes the Pelidse, or stone flies; the species so 

 far received all belong to Neoperla, or Ochtepetina as it is called 

 by some authors. 



Genus NEOPERLA Needham 



Key to the species. 



a'. Cross vein up from radial sector to the radius extending obliquely 



backward obliquus. 



a'. This cross vein straight across. 



6'. Pale yellowish; ocelli of moderate size Clarissa. 



6^ Brownish yellow; ocelli very large recta. 



Neoperla obliquus Banks. 



From Mount Maquiling and Los Baiios. A large yellowish 

 brown species, the legs and setse pale yellow, the antennae brown. 



Neoperla recta Banks. 



Numerous specimens from Mount Maquiling and Los Baiios. 

 In general appearance this species is very similar to N. obliquus. 



Neoperla Clarissa Banks. 



Specimens from Mount Maquiling and Los Banos. A smaller 

 and more yellow species than the others. 



