OKTHOPTERA ACRIUIDIDAE EEEMOBIA MAGNA. 887 



above the ocellus, constricted and subobliterated below the ocellus. The 

 face and cheeks rugose. Pronotum broad and rapidly expanding posteriorly 

 to the middle legs, flat and rugose above ; sides perpendicularly deflexed, 

 forming distinct humeral angles ; transverse incisions distinct, the posterior 

 in front of the middle ; median carina somewhat distinct on the posterior 

 lobe, obliterated on the anterior lobes ; -lateral carinoe distinct, not elevated ; 

 disk of the posterior lobe elongate-tuberculate ; anterior margin truncate ; 

 the posterior extremity elongate, extending upon the second abdominal seg- 

 ment, giving the posterior lobe an elongate-ovate form ; posterior lateral mar- 

 gins quite oblique, and slightly but regularly incurved. Abdomen verv 

 large, tapering rapidly posteriorly, not carinate above. Elytra squamose, 

 extending only to the middle of the second abdominal segment ; minutely 

 reticulated ; longitudinal veins inconspicuous ; wings minute. Posterior 

 femora shorter than the abdomen, robust, and convex on the disk ; pinnaB not 

 distinctly angulated on the disk but simply curved, and somewhat bifurcated 

 above, giving the disk somewhat the appearance of being covered by imbri- 

 cated scales ; upper and lower carinee hairy. Posterior tibire curved forward 

 in the lower half, expanding below, with strong, somewhat distant, and 

 slightly incurved spines nearly to the knee, hairy, especially between the 

 rows of spines. Anterior and middle legs pilose. Meso- and meta-sternum 

 very broad and flat ; the posterior margin of the latter squarely truncate 

 with no entering lobe or sinus. Prosternum about half the width of the 

 meta-sternum ; a somewhat prominent curved ridge extending across from 

 one leg to the other. Antennae of medium length, filiform. 



Color (alcoholic). Dull ochreous or yellowish-brown ; a few black 

 points on the anterior portion of the pronotum ; elytra brown with paler 

 reticulations ; interior face of the posterior femora dark-brown or black ; 

 tips of the valves of the ovipositor and of the tibial spines black ; sternum 

 and venter yellow. 



Dimensions. 9 , length, 1.90 inches ; pronotum, 0.75 inch ; width of 

 pronotum at the broadest point, 0.50 inch ; elytra, 0.25 inch ; posterior 

 femora, 0.70 inch; posterior tibiae, 0.65 inch; width of mesosternum, 0.56 

 inch. <* much smaller. 



