394 The Philippine Journal of Science 1923 



Genus OPHITJCHITS Distant 

 Distant, Fauna Brit. India, Rhynch. 7 (1918) 33. 



Type, Ophiuchus princeps Distant (Travancore). 



There is nothing given in the generic descriptions of Distant 

 by which the many species of the Nirvaniidse can possibly be 

 separated into generic groups. There is every gradation in size 

 of vertex and in curve of outer margin. I have, therefore, 

 selected from my material two new species which seem to be 

 congeneric with 0. princeps Distant, and have distinguished this 

 group of species as stated in the synopsis of genera. These two 

 species possess a type of venation which distinguishes them 

 from all other known members of this family. But Distant 

 does not describe the venation or show it in his figure. A third 

 new species (0. marginatus) is doubtfully placed in this genus. 

 Nothing more than this can be done until the type species is 

 • redescribed and its details are figured. 



Synopsis of species. 

 a\ Two apical cross veins nearly in line transversely, the two subcostal 

 cross veins joining radial vein far proximad of apical cells. 

 b\ Anterolateral margins of pronotum but slightly longer than postero- 

 lateral; a large blood red subapical spot in tegmina, the two sub- 

 costal oblique stripes subparallel 0. basilanus sp. nov. 



b*. Anterolateral margins of pronotum about three times the length of 

 posterolateral; vertex broadly margined laterally with red, these 

 stripes passing caudad over pronotum and scutellum and following 

 the commissural margins to end of clavus; the two subcostal 



oblique stripes converging mesad 0. montanus sp. nov. 



a\ Two apical cross veins distinctly dislocated; two subcostal cross veins 



joining radial vein near apical cell 0. marginatus sp. nov. 



Ophiuchus basilanus sp. nov. Plate 5, fig. 40. 



Pale ochraceous; bordering carina of vertex and anterior two- 

 thirds of median carina black; sides of vertex broadly reddish 

 yellow; pronotum and tegmina (the latter subhyaline) suffused 

 with pale clear golden yellow. Pronotum with a median fus- 

 cous line. Tegmina with the subcostal area apically clear 

 " hyaline and crossed by two oblique fuscous stripes; a roundish 

 blood red patch lying half in basal portion of second and half 

 in basal portion of third apical cell. Length of male, 6 milli- 

 meters. 



Front strongly flattened to extreme base, the fine median 

 carina there suddenly stronger, the head as a whole (Plate 5, 

 fig. 40, b) vertically very thin. Supra-antennal carina strongly 



