PUBLICATION 159 



PLATE 142 



MENTAL PLATES OF LARVAE. 



607. 

 608 

 609 

 6lO, 

 6ll 

 6l2 

 613- 



Psorophora howardii Coquillett. 

 Psorophora sayi Dyar & Knob. 

 Psorophora discrucians Walker. 

 Psorophora signipennis Coquillett. 

 Psorophora discolor Coquillett. 

 Psorophora Columbian Dyar & Knab. 

 Psorophora infine Dyar & Knab. 



614. Psorophora indoctum Dyar & Knab. 



615. Psorophora insularius Dyar & Knab. 



616. Aedes bimaculatus Coquillett. 



627. Aedes sylvestris Theobald 



617. Aedes curriei Coquillett. 



618. Aedes atropalpus Coquillett. 



619. Aedes varipalpus Coquillett. 



620. Aedes canadensis Theobald. 



621. Aedes sollicitans Walker. 

 Aedes mitchellse Dyar. 

 Aedes tseniorhynchus Wiedemann. 

 Aedes stimulans Walker. 

 Aedes fitchii Felt & Young. 

 Aedes abfitchii Felt. 



622. 

 623. 

 624. 

 625. 

 626. 



