264 The Philippine Journal of Science isis 



Abdomen rather long. Male forceps cultrate in shape, pos- 

 terior edge sharp, apex truncate; anal valve twice as long as 

 forceps, thick at base and tapering to a blunt apex. 



Described from one male from Los Barios, Luzon, P. L {Baker) . 



This species resembles the American species of Carsidara in 

 wing venation, but is allied to Dynopsylla cornuta Crawford " 

 in the shape of the vertex and gense and in the presence of the 

 vertex horns. In the larger species the hind tibiae are not 

 spurred at the base, but this was stated to be a less important 

 character. However, it is apparent that Dynopsylla and Carsi- 

 dara are closely related. 



A Japanese species, Mesohomotoma camphorae Matsumura, 

 is also closely allied to this species and is, perhaps, congeneric. 



Genus MEGATRIOZA novum 



Allied to Leuronota; dorsum scarcely arched; pronotum long, 

 not or only slightly depressed below level of mesonotum and 

 vertex; head long, not deflexed; genal cones long, directed for- 

 ward ; legs long ; hind tibise armed with a spur at both base and 

 apex, and several large spines at apex ; wings long, acute at apex, 

 triozine in venation. 



Type of genus : Megatrioza armata sp. nov. 



Megatrioza armata sp. nov. Plate I, fig. d. 



Length of body, 3.5 millimeters ; length of forewing, 6.7 ; width, 

 2.1 ; width of head, 0.8. General color light to yellowish brown ; 

 eyes dark. Body elongate, surface covered with long pale hairs. 



Head not quite as broad as thorax, long, not much deflexed; 

 vertex somewhat concave between posterior ocelli; front ocellus 

 visible from above; genal cones longer than vertex, divergent, 

 thickest midway between base and apex, tapering to a blunt 

 point, directed forward in plane of vertex; antennse about two 

 and one-half times as long as width of head, slender. 



Thorax long and large, but not much arched, ascending a little 

 to mesonotum and rather straight; pronotum nearly as long as 

 vertex, with an epiphysis on anterior edge dorsad; hind tibise 

 with a large spur at base and a larger, conspicuous one at apex, 

 as well as 3 large spines and several smaller ones as a fringe 

 around apex ; wings more than three times as long as broad, hya- 

 line, acute at apex, extending fully one half their length beyond 

 abdomen in both sexes ; first marginal cell larger than second. 



Abdomen rather long. Male: Genital segment small; forceps 

 as long as anal valve, relatively thick, not acutely pointed; anal 



' This Journal, Sec. D (1913), 8, 295. 



