INSECUTOR INSCITIAE MENSTRUUS. VOL. X, NOS. 7-9 



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BARE SPACE 



GRAY SCALES 



PLATE IV 



Fig. 1. Diagram of mesonotum of PsoropJwra cUiata Fabricius. 



Fig. 2. Diagram of mesonotum of Psorot^hnra tibialis Robineau-Des- 

 voidy. 



Fig. 3. Diagram of mesonotum of Psoroplwra holinbcrgii Lynch Arri- 

 balzaga. 



Fig. 4. Diagram of mesonotum of Psorophora ayoygylia Dyar. 



Fig. .5. Diagram of mesonotum of Psoroplwra stigmatcpJwra Dyar. 



Fig. 6. Diagram of mesonotum of Psoroplwra stigiiiatcplwra Dyar, 

 drawn with the bare spaces black to resemble Arribalzaga's figure (Rev. 

 Mus. dc La Plata, ii, pi. iv, fig. 3). 



