THE CANADIAN ENTOMOLOGIST 113 



A NEW SPFXIES OF CORIXID^. 



BY J. F. ABBOTT, WASHINGTON UNIVERSITY, ST. LOUIS. 



Palmacorixa buenoi, new species. 



With the general facies of P. gillettei Abbott, from which it 

 differs in the coarser texture of the tegmina, the character of the 

 Hneations and in the pala? of the male and the first femora of the 

 female. The discovery of a second species of this genus neces- 

 sitates a revision of the generic diagnosis given with the original 

 description (Ent. News, XXIII, 337). The genus may be char- 

 acterized as follows: Elongate, tegmina tapered posteriorly, with 

 vermiculate markings. Male pala? thin, plate-like, pegs variable. 

 Large stridular area on femur. Metathoracic wings aborted in 

 both sexes. Male asymmetry and strigil dextral ; fifth tergite 

 entire, sixth divided. 



Description: Similar to P. gillettei in size and appearance, 

 in the flattened short pronotum, and large head, with prominent 

 posterior angles. Dark yellow to smoky brown, and much darker 

 than gillettei. The tegminal Hneations are complete, more or less 

 inosculated and confused, but without a marked tendency to 

 longitudinal seriation. Lineations of clavus complete — -i.e., not 

 effaced on the inner anterior area as in gillettei. Head smoky 

 brown; its length 1^ in the width in the male, 2)4, in the female; 

 interorbital width twice in the head length in the male, 1^^ in 

 the female. Male fovea more prominent than in gillettei, reach- 

 ing the middle of the eye and clothed with delicate depressed 

 hairs. Pronotum flattened, margined, lenticular in outline, 

 evenly rounded posteriorly, dull and minutely rastrate, with 7-8 

 approximately parallel lineations, which are more or less broken, 

 the lineations about as wide as the yellow interspaces. Posterior 

 margin brown. Claval lineations delicate, vermiculate and inos- 

 culate, covering the whole clavus, fused externally to form a more 

 or less definite obliciue line parallel to the corio-claval suture. 

 Clavus rather infuscated and clouded across the middle third. 

 Markings of corium similar to those of clavus, running without 

 interruption over the membrane; inosculated, but scarcely inter- 

 rupted, sometimes fused into one or two rather indefinite longi- 

 tudinal lines, which do not extend beyond the embolium. Sur- 

 face of clavus and corium rather dull and rough, the clavus usually 



Anril, 1913 



