E. T. CRESSON, JR. 107 



Second antennal joint with flattened area above. 



argyrostoma, puncticornis 



Frons flattened, horizontal, antennae above middle line of eyes. 



Eyes horizontal pleurivittata 



Eyes round taurus 



Table of Species 



1. Second antennal joint with a flattened, mostly silvery, area above at 



apex 2 



Second joint normal 4 



2. Mesopleura traversed by a broad brown stripe; frons and eyes 



horizontal plurivittata p. 122. 



Mesopleura cinereous or more or less irrorated and marked with 



bro^Ti at sutures ; eyes round 3 



3.- Frons horizontal; face dark puncticornis p. 121. 



Frons convex; face white argyrostoma p. 120. 



3. Frons in profile flattened, horizontal; face long with well marked hump 



above middle (fig. 6) taurus p. 123. 



Frons convex; face short, without marked hump 5 



5. Males 6 



Females 11 



6. Fore femora more or less constricted beneath on apical third and with 



mesal series of curved flattened bristles (fig. 7) 7 



Fore femora and ciliation normal 9 



7. Head at least as high as broad; frons and face narrow; latter opaque, 



plumbaceous plumbiceps p. 110. 



Head broader than high; frons and face broad; latter more or less seri- 

 ceous 8 



8. Lateral flexor series on fore femora simple, limited to a few bristles at 



basal fourth; parafacials narrow ciliata p. 111. 



Lateral series compUcated, limited to basal half. 



Second vein of wing curving, subparallel to costa (fig. 8). 



flexineuris p. 111. 

 Second vein straight, normal texana p 113. 



9. Face except foveae and parafacials entirely dark browni. 



brunneiceps p. 120 

 Face mostly cinereous or yellowish brown 10 



10. Parafacials at least one half as broad as third antennal joint. 



appendiculata p. 114. 

 Parafacials much less than one half as broad as third joiia. 



meridionalis p. 119. 



11. Frons broader than long 12 



Frons not broader than long; face dull lead color, .plumbiceps p. 110. 



12. Face with a velvety black spot between antennae. . .nigropicta p. 118. 

 This spot if present brownish 13 



13. Face except foveae and parafacials entirely dark brown, not mottled 



with yellow brunneiceps p. 120. 



Face mostly cinereous or mottled with j^ellow or brown 14 



TRANS. .VM. ENT., SOC. XLII. 



