EXPLANATION OF PLATES IX 



Plate 136. Mandibles of Larvae: (520) Sabethinus undosus. (521) Wyeomyia sor- 

 orcula. (522) Lesticocampa rapax. (523) Joblotia digitatus. (524) 

 Deinocerites cancer. (525) Culex pleuristriatus. (526) Culex rejector. 

 (527) Culex corniger. (528) Culex divisor. 



Plate 137. Mandibles of Larvae: (529) Lutzia bigoti. (530) Culiseta incidens. 

 (531) Psoropbora ciliata. (532) Psorophora signipennis. (533) Aedes 

 cantator. (534) Bancroftia fascipes. (535) Megarhinus superbus. 

 (536) Megarhinus septentrionalis. (537) Stegoconops lucifer. 



Plate 138. Mandibles of Larvae: (538) Uranotaenia coatzacoalcos. (539) Urano- 

 tsenia geometrica. (540) Anopheles grabhamii. (541) Anopheles eiseni. 

 (542) Anopheles punctipennis. (543) Anopheles pseudopunctipennis. 

 (544) Anopheles crucians. (545) Anopheles quadrimaculatus. (546) 

 Ccelodiazesis barberi. 



Plate 139. Mental Plates of Larvae: (547) Sabethinus undosus. (548) Limatus dur- 

 hamii. (549) Wyeomyia trinidadensis. (550) Wyeomyia sororcula. 

 (551) Wyeomyia aporonoma. (552) Wyeomyia mitchellii. (553) Wyeo- 

 myia smithii. (554) Wyeomyia autocratica. (555) Wyeomyia pseudo- 

 pecten. (556) Wyeomyia bromeliarum. (557) Wyeomyia telestica. 

 (558) Wyeomyia hemisagnosta. (559) Lesticocampa rapax. (560) 

 Joblotia digitatus. (561) Lutzia bigoti. (562) Culex tarsalis. (563) 

 Culex corniger. (564) Culex dyari. 



Plate 140. Mental Plates of Larvae : (565) Culex mortiflcator. (566) Culex carmodyae. 

 (567) Culex habilitator. (568) Culex declarator. (569) Culex inquisi- 

 tor. (570) Culex proclamator. (571) Culex coronator. (572) Culex 

 derivator. (573) Culex territans. (574) Culex bahamensis. (575) 

 Culex simulator. (576) Culex bisulcatus. (577) Culex conservator. 

 (578) Culex melanurus. (579) Culex extricator. (580) Culex restuans. 

 (581) Culex barbarus. (582) Culex similis. 



Plate 141. Mental Plates of Larvae: (583) Culex quinquefasciatus. (584) Culex 

 pipiens. (585) Culex factor. (586) Culex salinarius. (587) Culex 

 investigator. (558) Culex erraticus. (589) Culex agitator. (590) Culex 

 caudelli. (591) Culex conspirator. (592) Culex carcinophilus. (593) 

 Culex elevator. (594) Culex interrogator. (595) Culex mutator. (596) 

 Culex restrictor. (597) Culex decorator. (598) Culex imitator. (599) 

 Culex rejector. (600) Culex pleuristriatus. (601) Culex gravitator. 

 (602) Culex inimitabilis. (603) Carrollia urichii. (604) Culiseta 

 incidens. (605) Culiseta inornatus. (606) Psorophora ciliata. 



Plate 142. Mental Plates of Larvae: (607) Psorophora howardii. (608) Psorophora 

 sayi. (609) Psorophora discrucians. (610) Psorophora signipennis. 

 (611) Psorophora discolor. (612) Psorophora columbiae. (613) Psoro- 

 phora infine. (614) Psorophora indoctum. (615) Psorophora insu- 

 larius. (616) Aedes bimaculatus. (617) Aedes curriei. (618) Aedes 

 atropalpus. (619) Aedes varipalpus. (620) Aedes canadensis. (621) 

 Aedes sollicitans. (622) Aedes mitchellae. (623) Aedes taeniorhynchus. 

 (624) Aedes stimulans. (625) Aedes fitchii. (626) Aedes abfitchii. 

 (627) Aedes sylvestris. 



Plate 143. Mental Plates of larvae: (628) Aedes cantator. (629) Aedes fuscus. (630) 

 Aedes lazarensis. (631) Aedes pullatus. (632) Aedes hirsuteron. 

 (633) Aedes auroides. (634) Aedes trichurus. (635) Aedes triseriatus. 

 (636) Aedes aurifer. (637) Aedes trivittatus. (638) Aedes dupreei. 

 (639) Aedes euplocamus. (640) Aedes serratus. (641) Aedes atlanti- 

 cus. (642) Aedes bracteatus. (643) Aedes podographicus. (644) Aedes 

 oswaldi. (645) Aedes mediovittata. (646) Aedes calopus. 



