14 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 119 



Genus Miorrhynchus Champion 



Miorrhynchus Champion, 1898, in Godtnan and Salvia, Biologia Centrali-Ameri- 

 cana, Rhynchota: Heteroptera, vol. 2, p. 75. 



The genus Miorrhynchus Champion has contained ten species which 

 may be separated into two groups: those with spiracles from VI to 

 VIII lateral and visible from above; and those with only spiracles 

 VII to VIII lateral and visible from above. Two new species belong- 

 ing to the first group are described herewith. 



Miorrhynchus angulatus, new species 



Figures 16, 17 



Male. — Elongate, widening backward, subtruncate posteriorly, 

 partially covered with relatively long, incrusted, curled hairs. 



Head longer than width across eyes (25 :22). Anterior process long 

 and moderately stout, covered with incrusted hairs which make it 

 look stouter; reaching basal fourth of antennal segment I. Anten- 

 niferous tubercles parallel, directed forward. Eyes moderately large, 

 semiglobose, protruding. Postocular borders straight; postocular 

 tubercles placed far from eyes, dentiform, directed sideways. Vertex 

 with two (1 + 1) rows of parallel, setigerous tubercles, running from 

 base of clypeus to hindborder of head, two (1 + 1) pyriform callosities 

 laterad of each row. Antennae very^ long, more than three times as 

 long as head (81 :25) ; first two segments covered with incrusted hairs, 

 those on first segment longest; apical two segments except for a brush 

 of erect bristles on tip of IV, naked. Proportions of the antennal 

 segments: 29 : 12 :30 : 10. Rostral groove long, deep, closed posteriorly; 

 rostrum reaching hindborder of latter. 



Pronotum much shorter than width across the humeri (32:50); 

 forelobe much narrower than hindlobe (36:50); interlobal depression 

 deep. Collar wide, with strongly sinuate foreborder. Antero- 

 lateral angles rounded, with a fringe of long, incrusted hairs; lateral 

 borders shghtly convex on the forelobe, more convex on the hindlobe ; 

 hindborder almost straight. Foredisc with two (1 + 1) round callo- 

 sities; laterad of them with two (1 + 1) ridges covered with incrusted 

 hairs; hinddisc rather flat, covered with remote granulations and 

 short, incrusted hairs. 



ScuteUum shorter than width at base (20:28); carinate at all 

 borders; lateral borders straight; tip pointed; disc rugose, with a low, 

 median ridge, covered with long, curled, incrusted hairs. 



Hemelytra reaching middle of tergum VII. Basolateral borders 

 of corium reflexed; apical border convex exteriorly, sinuate interiorly; 

 apical angle rounded, reaching hindborder of connexivum II. Mem- 

 brane large, veins anastomosed. 



