PUBLICATION 159 



PLATE 20 



141 



142 



144 



MALE GENITALIA. 



141. Psorophora virescens Dyar & Knab. 



142. Psorophora howardii Coquillett. 



143. Psorophora ciliata Fdbricius. 



144. Psorophora cilipes Fabricius. 



145. Psorophora sasva Dyar & Knab. 



146. Psorophora sayi Dyar & Knab. 



