490 PROCEEDINGS OF THE NATIONAL MUSEUM vol. hi 



submedian, lightly impressed across full width, marked by regular 

 row of punctures; anterior lobe impunctate except for four or five 

 punctures laterally; posterior lobe with less than ten punctures 

 medially. 



Scutellum: Length less than width, 1.62:1.72; disc polished, with 

 sparse, scattered punctures. 



Hemelytron: Clavus and corium polished; clavus with one row of 

 strong punctures; corium virtually impunctate except for one com- 

 plete and interrupted second row of mesocorial punctures; costa with 

 two setigerous punctures; membranal suture straight, lateral angle 

 not prolonged; membrane longer than basal width, surpassing apex 

 of abdomen. 



Propleuron: Shining, distinctly punctate only in depression; pro- 

 sternal carinae less than half as high as labial II. 



Mesopleuron : Lateral area impunctate. 



Metapleuron: Lateral margin of evaporatorium straight; lateral 

 area impunctate. 



Legs: Hind tibia without subbasal spine ventrally, posteroventral 

 margin with four spines. 



Sternites: Faintly alutaceous, impunctate. 



Terminalia: Genital capsule with few punctures laterally, apical 

 margin straight; gonostylus as illustrated (fig. 229). 



Length of body: 5.38. 



Type data. — St&l's type female (Stock) is from Rio de Janeiro, 

 Brazil. 



Specimens studied. — 1 male, 1 female: 



Guatemala: Acatenango, May 1948, H. T. Dalmat, 1 male (USNM). 

 Brazil: Rio de Janeiro, 1 female, the type specimen (Stock). 



Discussion. — The single specimen assigned here is a male that 

 agrees quite well with the female type except that its transverse 

 pronotal impression is not quite as deeply impressed medially as is 

 that of the type. At present, the author is not fully confident that 

 he can accurately associate males and females of the same species 

 within this section of the subgenus; but in order to tie down the name 

 moestus, which was described from a female, he has chosen to apply 

 it to a male which is structurally very similar to the type, even though 

 from a widely removed locality. Assumption that the males and 

 females are usually morphologically similar is based on the results of 

 studying many females that bear data labels identical to those found 

 on some males. The females usually are very similar but never show 

 the ventral subbasal angulation on the hind tibia. Thus, a strong 

 landmark of the males is missing from the females and adds to the 

 difficulty of separating the nearly twice as many female specimens. 



