252 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ii8 



Scutellum shorter than wide at base (21:25), rimmed on all sides; 

 disc granulate, with fine, low, granulate, T-shaped, median ridge, 



Hemelytra reaching to foreborder of tergum VII ( cf") ; apical border 

 of corimn convex, strongly rounded, apical angle blunt. 



Abdomen ovate, longer than wide (70:56), maximal width across 

 segment V. Connexivum II granulate; connexiva III to VII almost 

 without granulation, rather scabrous; postero-exterior angles barely 

 protruding; those of connexivum VII extending backward as rounded 

 lobes, extending posteriorly as far as third of hypopygium; lobes of 

 VIII (paratergites) clavate, reaching basal two-thirds of hypopy- 

 gium; latter cordate, with median ridge elevated backward and 

 terminating before reaching hind border. Spiracles II to VI ventral, 

 placed far from outer margin; those of VII sublateral, not visible from 

 above; VIII lateral and visible. 



Color. — Piceous; connexiva III to VII, and lobes of VIII testa- 

 ceous; membrane blackish, whitish at base. 



Measurements. — Length 4.74 mm. Width of pronotum 1.56 

 mm. Width of abdomen 1.86 mm. 



HoLOTYPE. — Male, Huatusco, Veracruz, Mexico, Jan. 2, 1952 

 (USNM type 65797). 



Remarks. — This species is dedicated to the memory of the late 

 G. C. Champion, who has contributed so much to knowledge of 

 Central American Aradidae. 



The species is allied closely to M. angustata (Champion), but it 

 differs from the latter by the following characteristics : anterior process 

 of head relatively longer, almost reaching tip of first antennal segment; 

 antenniferous tubercles narrower, not so divergent; pronotum less 

 constricted at sides; abdomen {d^) with sides widely rounded, not 

 parallel-sided; median ridge of hypopygiun raised backward, not 

 reaching tip of hypopygium. 



Mezira mexicana, new species 



Female. — Elongate ovate, densely covered with setigerous granu- 

 lations; granules fine, each with very short erect setal hair. 



Head shorter than width across eyes (27 :30) ; anterior process long, 

 robust, slightly widening forward, rounded, notched in middle, ante- 

 riorly reaching to apical third of first antennal segment. Antenniferous 

 tubercles spiniform, divergent, reaching middle of first antennal 

 segment. Eyes semiglobose, exserted. Postocular tubercles small, 

 acute, reaching outer border of eyes; infraocular carinae moderately 

 high, crenulate; vertex with four rows of setigerous tubercles. An- 

 tennae slender, less than twice as long as head (46:27), proportions 



