X, D, 1 Baker: Philippine Jassoidea 53 



k'. Face always far longer than broad; vertex usually 

 as long as, or longer than, broad; tegmina with 5 

 apical cells, 

 r. Vertex subangular anteriorly; clypeus medially 



carinate Guliga Dist.' 



Z^ Vertex very obtuse anteriorly; clypeus usually 

 noncarinate, except occasionally toward base. 



Jassus Fabr. 

 i'. Head about as wide as pronotum. 

 p. Pronotum slightly emarginate behind; clypeus 

 broadened to tip; tegmina with 2 subapical cells. 



Arya Dist. 

 f. Pronotum deeply emarginate behind; clypeus nar- 

 rowed to tip; tegmina with 1 subapical cell. 



Myittana Dist. 

 c'. Eyes broadly adjoining front in facial view; vertex foveate, short 

 angulate anteriorly; pronotum with anterior margin acutely pro- 

 duced between the eyes Pugla Dist. 



b'. Pronotum distinctly medially carinate; vertex laterally carinate, twice 



as long as width between eyes, apically acute, anteocular portion 



longer than interocular. 



c\ Scutellum longer than pronotum; anteocular portion of vertex with 



subangulated lateral margins; lateral carinas of vertex widely 



separated at base and apex Thagria Mel. 



c^ Scutellum shorter than pronotum; anteocular portion of vertex with 

 nearly straight lateral margins; lateral carinas of vertex con- 

 verging at base and apex Mukwana Dist. 



a'. Fore femora or tibiae foliaceous or curved. 



6\ Fore femora normal, fore tibias curved Terulia Stal. 



6^ Fore femora dilated Gabrita Kirk. (Petalopoda Spang.) 



Genus JASSUS Fabricus 



So far as known to me, there are 4 common species of Jassus 

 in Luzon.® Three of these species were described by Stal and 

 are easily recognized from his descriptions. Apparently the 

 rostrum is distinctly longer in /. philippinensis than in obscurus 

 or conspersus, but it is not clear what Stal refers to as the "last 

 segment," since the divisions of the joints are in part quite 

 obscure. 



Drawings of a full-face view in these species does not show 

 at all the exact form of the front. At the antenna the frontal 

 margin is incurved into the basin of the antennal scrobe and 

 there acutely angled. Along the general line of the margin, on 

 the side of the disk of the front at this position, is a sharp 



' As will be noted by students of this group, the separation of Guliga 

 on the characters given is wholly inadequate to establish the genus. 



° A number of other species from the southern islands will be reported 

 on later. 



