no. 3632 CARTWRIGHTIA — CARTWRIGHT 7 



yellowish-brown argillaceous surface of clypeus with distinct coarse 

 punctures over large area on each side of median convexity; posterior 

 margin of clypeus sharply elevated above frontal-basal area of head 

 and laterally down to genae, deep pit behind gena. 



Pronotum generally with argillaceous coating, more or less quadrate, 

 anteriorly with narrow membranous edge, anterior angles broadly 

 rounded, lateral margin sinuate to broadly rounded posterior angles, 

 base slightly angulate posteriorly at middle; surface with five depressed 

 areas, large area on each side of median ridge anteriorly; over basal 

 half a median, wide, depressed longitudinal area; depressed area with 

 deep, sharply incised line from anterior angles diagonally back to basal 

 fourth (see pi. 3) ; five depressed areas separated by rounded, faintly 

 shining ridges showing very fine punctures and alutaceous sculpture; 

 anterior depressed areas with deep coarse punctures in argillaceous 

 coating; most of them grouped rather closely in posterior half of de- 

 pression; some coarse punctures in diagonal depressions also; none 

 noticeable in median basal depression; sharp, deep, narrow depression 

 just inside posterior angles visible in lateral view. 



Scutellum long, narrow, parallel, three times as long as wide. Elytra 2.15 

 mm long, 1.35 mm wide. Each elytron with strong sutural, lateral, and 

 discal costae, four discal costae with fine, shining, median carina 

 bordered on each side with narrow argillaceous fine; first discal costa 

 ending posteriorly in large, swollen, argillaceous mass, hooked laterally 

 toward ends of other costae, second and third with very slight swelling, 

 hooked inward toward first but not quite uniting with it, end of fourth 

 with practically no swelling; sutural costae flattened and widened 

 posteriorly toward bulbous ends of first but remaining separated by 

 narrow furrow; intervals flat, smooth, shining, with row of small 

 distinct punctures on each side close to bordering costae, punctures 

 gradually disappearing over apical declivity. 



Pronotum with large, wide, triangular posterior intercoxal process. 

 Mesosternum flattened, slightly concave, sides flaring and partly 

 covering anterior three-fifths of middle coxae; middle coxae separated 

 by length of middle trochanter. Metasternal midline long and deep 

 but somewhat masked by argillaceous coating of elongate concave 

 discal area, this area with mixed, scattered fine and moderate in- 

 distinct punctures, surface everywhere finely alutaceous; triangular 

 depression in front of posterior coxae moderately deep and slightly 

 scabrous. 



Five visible abdominal segments narrower at middle than at sides, 

 penultimate segment very narrow at middle, only about one-sixth 

 length of terminal segment at middle, segments bordered anteriorly 

 with row of indistinct close moderate punctures. Pygidium concave 

 on each side of low, wide indistinct carina. Entire undersurface, includ- 



