248 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lis 



Head longer than width across eyes (31:25); anterior process 

 (clypeus and juga together) long, slightly widening anteriorly, and 

 cleft, reaching three-fom"ths first antennal segment. Antenniferous 

 tubercles long, spiniform, divergent, raised anteriorly, reaching 

 one-third ftrst antennal segment. Eyes semiglobose, exserted, placed 

 behind middle of head. Postocular tubercles dentiform, short, not 

 reaching outer border of eyes. Infraocular carinae low, with bigger 

 tooth anteriorly. Vertex with setigerous granulation. Antennae 

 long, slender, twice as long as width of head across eyes (52:25); 

 proportions of segments 15:11:15:11. Rostrum not reaching to hind 

 border of long, deep, wide, and transversely rugose rostral groove. 



Pronotum almost half as long as width across humeri (30:58); 

 collum slender, distinct. Anterolateral angles expanded winglike 

 laterally, with anterior border straight and not reaching foremargin 

 of collum. Lateral borders of hind lobe denticulate and convergent 

 anteriorly; lateral notch big, rectangular. Foredisc of pronotum 

 with four (2+2) longitudinal ridges, two inner ones thicker, two outer 

 ones thinner; medium line deeply depressed. Hind disc with dis- 

 persed setigerous granulation. Hind border deeply and widely ex- 

 cavated at middle. 



Scutellum slightly shorter than basal width (27:32); basal border 

 convex; lateral borders convex anteriorly, sinuate posteriorly; tip of 

 scutellum notched. Median ridge tapering to tip; disc transversely 

 rugose. Two (1 + 1) tubercles placed at basal angles. 



Hem elytra reaching hind border of tergum VI. Basolateral 

 borders of corium denticulate, slightly diverging backward, reflexed. 

 Apical border of corium convex exteriorly, apical angle rounded. 

 Membrane sepia, with triangular white spot near apical angle of 

 corium. 



Abdomen ovate, almost as long as wide (79 :77) ; postero-exterior 

 angles of connexiva protruding angularly; postero-exterior angles of 

 connexivum VII dentiform, divergent. Exterior borders of connexiva 

 straight; those of connexivum VII convex. Hypopygium with thin 

 median furrow and with rounded rim on upper side posteriorly. 

 Spiracles II to VII ventral, far removed from lateral border, those of 

 VIII lateral and visible from above. 



Color.- — Sepia; apical half of antennal segment IV, postero-exterior 

 angles of connexiva, and rostrum light brown. 



Measurements. — Length 8.35 mm. Width of pronotum 2.60 

 mm. Width of abdomen 3.56 mm. 



HoLOTYPE. — Male, Vera Cruz, Mexico, May 13, 1946, on orchid 

 plants, named for Dr. Reece I. Sailer (USNM type 65795). 



