PUBLICATION 159 



PLATE 142 



MENTAL PLATES OF LARVAE. 



607. Psorophora howardii Coquillett. 



608. Psorophora sayi Dyar & Knob. 



609. Psorophora discrucians Walker. 



610. Psorophora signipennis Coquillett. 



611. Psorophora discolor Coquillett. 



612. Psorophora columbias Dyar & Knab, 



613. Psorophora infine Dyar & Knab. 



614. Psorophora indoctum Dyar & Knab. 



615. Psorophora insularius Dyar & Knab. 



616. Aedes bimaculatus Coquillett. 



627. Aedes 



617. Aedes curriei Coquillett. 



618. Aedes atropalpus Coquillett. 



619. Aedes varipalpus Coquillett. 



620. Aedes canadensis Theobald. 



621. Aedes sollicitans Walker. 



622. Aedes mitchelke Dyar. 



623. Aedes tseniorhynchus Wiedemann. 



624. Aedes stimulans Walker. 



625. Aedes fitchii Felt & Young. 



626. Aedes abfitchii Felt. 

 sylvestris Theobald. 



