108 POMIILID.E. 



b^. Median segment markedly trans- 

 versely striate, vnth a narrow 



medial lougitudinal farrow .... P. pedunculata, p. 112 

 c'^. Head, greater part of thorax, and 



abdomen red ; median segment black. P. obsoletn, p. 113. 

 b' . Wings dark fuscous with violet and 

 purple effulgence 



a^. Abdomen red P. insukiris, p. 113. 



b'^. Abdomen black P. pleheja, p. 114. 



C. Wings clear hyaline. 



a. Head, thorax, and abdomen metallic blue. . P. blanda, Tp. 114. 



b. Head, thorax, and abdomen black. 



a'. Clypeus white or with lateral white 

 spots. 



a^. Abdomen black P. ch/peata, p. 114. 



b-. Abdomen black, posterior margins of 



the segments narrowly white P. albilahris, p. 115. 



b'. Clypeus black. 



a^. Thorax in front transverse, the inferior 



lateral angles anteriorly produced. . P. shdta, p. 115. 

 h-. Thorax in front rounded, the inferior 



lateral angles not produced P. tincta, p. 116. 



D. Wings clear hyaline, or hj'aline with a yel- 



lowish tint, with one fuscous subapical 

 fascia. 



a. Median segment narrowly furrowed down 



the middle. 

 a' , Posterior femora red. 



d^. Clypeus and sides of face in front 



white P. bipennis, p. 116. 



b'^. Clypeus and sides of face in front 



black P. hypsipyle, p. 116. 



b' . Posterior femora black. 



a-. Basal nervure of fore wing interstitial P. uer/fl, p. 117. 

 5". Basal nervure of fore wing not 



interstitial P. alaris, p. 117. 



b. Median segment not furrowed down the 



middle P. lavicula, p. 118. 



E. Wings clear hyaline, or hyaline with a yel- 



low tinge, with two fuscous fasciiB on the 

 fore wing. 



a. Thorax black. 



a'. Inner fascia on wings narrower than 

 outer. 

 a^. Median segment long, sulcate down 

 the middle. 

 a^. Minute (L. 6 mm.) ; a red spot in 



sinus of eyes P. micromegala, p. 118. 



P. Larger (L. 14-17 mm.); no red spot 



in sinus of eyes P. callisto, p. 119. 



b'^. Median segment not sulcate down the 



middle P. ncricula, p. 119. 



h' , Inner fascia broader than outer P. erigone, p. 119. 



b. Thorax red P. ceyina, p. 120. 



{ 



