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7. EXPLANATION OF PLATES. 



Abbreviations. 



The figures 1, 2, 3, etc., placed before an abbreviation signify first, second, third, 



etc.; the figures 1, 2, and 3 placed after and below an abbreviation refer the latter to 



the prothorax, mesothorax, or metathorax, respectively, except on the wings where 



they indicate branches of the veins; the Roman numerals I-X designate the abdomi- 

 nal segments or their respective parts. A subdivision of any part is indicated by a 



duplicate of its symbol in lower case letters. 



A, anal vein. 



ANP, anterior notal wing process. 



ANR, anterior ventral notal ridge. 



anr, line on surface of notum formed by ANR. 



Aph, prephragma of any segment. 



Ax, axillary sclerites of wing base. lAx, 2Ax, SAx, 4Ax, first, second, third, and 

 fourth axillaries. 



AxC, axillary cord, the ligament-like thickening of posterior edge of axillary mem- 

 brane of wing. 



AxD, axillary disk, usually attached to second axillary and bearing insertion of coxo- 

 axillary muscle. 



AxM, axillary membrane, the membrane of the wing base. 



C, costa. 



Cer, cervicum. 



Cu, cubitus. 



cv, cross vein. 



Cx, coxa. 



CxP, coxal process of pleurum. 



Em, lateral emargination of notum. 



Emp, empodium. 



