^ PROCEEDINGS OF THE ISTATIONAl. MUSEUM vol.73 



110. Scutum and scutellum wholly black Integra. 



Scutellum and sometimes the scutum with maculations, which may be 



quite small ^^^' 



111. Fasciae on tergltes yellow similans. 



Fasciae on tergites white primaaestate. 



112. Fascia on first tergite continuous 113. 



Fascia on first tergite interrupted 114. 



113. Fascia on second sternite inclosing pair of black spots, or bearing pair of 



anterior emarginations ; sixth sternite black brullei. 



Fascia on second sternite not inclosing black spots or bearing emargina- 

 tions ; sixth sternite maculated albata. 



314. Fasciae on tergites bright yellow; ultimate tergite with central yellow 



maculation cameroni. 



Fasciae on tergites soiled or greenish white, rarely greenish yellow; sixth 

 tergite black or with white (sometimes greenish yellow) maculation__115. 



115. Pubescence normal; sixth tergite black spinolae. 



Pubescence unusually abundant ; sixth tergite with white ( rarely gre«.nish 



yellow) maculation, sometimes much obscured comata. 



116. Lateral spots on st^nites, at least those on sternite two, separated by a 



ferruginous area or band 117. 



Lateral spots on sternites not so separated ; ferruginous, if present at all, 

 limited to apical lines 120. 



117. Clypeus strongly carinate at base ; second abscissa of the cubitella lacking. 



nupera. 



Clypeus not strongly carinate at base ; second abscissa of cubitella present 



(sometimes much reduced) . 118. 



118. Fasciae on tergites yellow 119. 



Fasciae on tergites pale loupata. 



119. Wings hyaline capensis. 



Wings infumated stevensoni. 



120. Labrum with median longitudinal carina whose distal part is broadened 



and longitudinally grooved regia. 



Labrum without such development 121. 



121. Wings clouded medially or basally 122. 



Wings not clouded medially or basally 125. 



122. Clypeus not marked with black 123. 



Clypeus black or marked with black 124. 



123. Antennae ferruginous; legs marked with ferruginous gracilens. 



Antennae black and yellow ; legs black and yellow nubilpennis. 



124. Maculation on mesopleura large and conspicuous ; lateral spots on second 



sternite (sometimes on all sternites) united by apical line melanaspis. 



Maculation on mesopleura small or lacking ; lateral spots on second sternite 

 not connected oculata. 



125. Scutum with no trace of discal marks 126. 



Scutum with more or less well-developed discal marks 143. 



126. Large, 17-22 mm. in length 127. 



Small, 16 mm. or less in length 134. 



127. Fasciae on tergites yellow; second inclosing black spots 128. 



Fasciae on tergites white or pale yellow ; second never inclosing pair of 



black spots 129. 



128. Clypeus yellow occidentalis. 



Clypeus almost entirely black recurva. 



