484 The Philippine Journal of .Science 1923 



than long; the median and lateral carina? continued on to the 

 face, which is but very slightly narrowed between the eyes. 

 Clypeus tricarinate, the median carina obscure. Antennae reach- 

 ing to base of clypeus, first segment as wide as long, second 

 narrow at base, thickened on apical portion. Posterior margin 

 of pronotum very shallowly emarginate, obscurely tricarinate, 

 the lateral carinse widely diverging on posterior half and 

 joining hind margin near tegulae; the three carinse of meso- 

 notum straight, parallel, obscure. In the tegmina Sc and R 

 separate about one-third from base of tegmen ; four branches 

 of R at apex; Cul and Cula touch for a short distance before 

 apex. Near the base of the abdomen there are two pairs of 

 processes arising from the pleura; the first two processes are 

 longer than broad, narrowed at base, slightly flattened, and 

 bear two depressions on apex; the second two are not so long 

 and appear more like swellings on the pleura than processes, 

 and each bears a small depression on apex. The pygofer differs 

 from that of all the Achilidse with which I am acquainted; it 

 is compressed laterally and has a chitinous bar across the middle 

 to which the base of the aedeagus is attached, thus allowing it 

 movement around the point of attachment but not allowing it 

 to be protruded. I know of no other fulgorid with this feature. 

 In certain respects this type of genitalia approaches the type 

 found in the Meenoplinse of the Cixiidae. 



Type, Achilixius singularis sp. nov. 

 Achilixius singularis sp. nov. Plate 1, fig. 1. 



Male.— Length, 2.7 millimeters; tegmen, 4. Brown; frons, 

 vertex, and pronotum dull, with minute punctures, mesonotum 

 shiny, with very few punctures ; antennae, lateral carinae of frons, 

 lateral portions of pronotum, legs, abdominal pleura, and pleural 

 processes lighter brown or yellow. Tegmina brown, veins same 

 color as membrane, except the apical veins, which are light, 

 no tubercles or macrotrichae ; wings fuscous brown with dark 

 veins. 



Pygofer large, compressed laterally, opening longer than 

 broad, lateral margins slightly angular in middle, no anal emar- 

 gination, basal foramen comparatively small. Anal segment 

 large, much longer than broad, subparallel sided, apex slightly 

 angular in middle, the lateral angles projecting ; dorsal surface 

 flattened on basal two-thirds, rounded on apical third, anus at 

 base, ventral surface concave. Genital styles long, slender, 

 subspiniform, flattened slightly on basal third where there is 

 a subquadrate process and a small curved spine on the outer 



