338 ENTOMOLOGICAL NEWS. [Oct., 'l2 



terorbital space (posterior margin) about twice in the median length 

 of the head in the male; one and a half times in the female. Inner 

 margins of eyes parallel in facial aspect. 



Pronotum lenticular, with a more or less definite median keel, 

 rather strongly margined, the margin being marked by a narrow line 

 of brown, the anterior line incised to- correspond with the emargina- 

 tion of the head. Color, yellowish, paler at the sides, with eight to ten 

 delicate broken and confluent lineations, some of the most posterior 

 of which join the marginal line. Surface of pronotum polished, mi- 

 nutely rastrate; it requires a compound microscope to resolve the 

 rastrations. 



Tegmina polished, non-rastrate, light yellowish with brown mark- 

 ings. The latter are quite variable, usually not displaying the familiar 

 cross-barred effect of the majority of the species in the family. 

 Clavus more or less immaculate toward the inner angle as in mer- 

 cenarla Say, the markings reduced to a more or less definite diagonal 

 stripe following the direction of the corial suture. The inner edge 

 of the clavus is margined with brown, and between this and the diag- 

 onal stripe mentioned are numerous lineations ranging from isolated 

 flecks in some individuals to interlocking and connecting cross bars 

 in others. Embolium immaculate, its inner edge strongly margined. 

 Corium and membrane with vermiculate and inosculate brown mark- 

 ings, usually arranged in two rather indefinite longitudinal stripes. A 

 dark fleck on the outer edge of the membrane. 



Metathoracic wings aborted in both sexes to a rudiment which ex- 

 tends from' thorax to about the level of the third abdominal segment. 

 Strigil ovate, about 0.3 mm. long by 0.2 mm. wide, transversely placed, 

 with 6-7 striae. Legs and entire under surface yellowish white. 



Male palae very strongly compressed, plate like, the lower edge 

 straight, the upper edge parabolic in outline; the surface covered with 

 fine depressed spines. Toward the lower edge, next the tibial joint 

 are found the "pegs" in two rows, 5-6 in the upper row, 9-10 in the 

 lower. These two rows seem rather sharply differentiated from the 

 rest of the spines covering the face of the pala, yet it would seem to 

 be not impossible that the whole surface may function in stridulation. 

 The lower edge of the pala is fringed with cilia but there is no termi- 

 nal spine. Tibia globular, about one-fourth the length of the pala. 

 Femur oblong, as long as the pala, its width about one-half its length. 

 Stridular area large, consisting of numerous rows of minute spines. 

 Female palae short cultrate, triangular in section, the length a little 

 less than three times the greatest height. Tibia rounded oblong, about 

 as wide as the pala, its length a little more than twice its width. 

 Femur trapezoidal in shape with a distinct area of strong spines 

 analogous to the stridular area in males. 



