62 DURHAM DIPTERA. 



IX. 



5 (6) (7). Palpi very short in both sexes. 



91. Aedes, Mg. (641. cinereus, Mg.) 



6 (5) (7). Palpi very long in both sexes (VI. 6) ; male forceps 



not longer than the last abdominal segment. 



Anopheles, Mg. (93) 



7 (5) (6). Palpi long in the male, very short in the female 



(VI. 7) ; male forceps longer than the last 

 segment. Culex, L. (93) 



TABLES OP SPECIES. 

 89. CORETHRA, Mg. 



1 (2). Legs with many brown dots along the femora and 



tibiae. (639. pallida, F.) 



2 (1). Legs without dots. 



3 (4). Plume of the male pale yellow. General colour pale 



brownish. Thorax with broad white side stripes. 



(638. plumicornis, F.) 



4 (3). Plume of the male darkish brown. General colour 



dark brown. Thoracic side marks mere small 

 ticks, and never white. (637. culiciformis, Mg.) 



92. Anopheles, Mg. 



1 (2). Legs black. (642. nigripes, Staeg.) 



2 (1). Legs yellow. 



3 (4). Wings spotted. (644. maculipennis, Mg.) 



4 (3). Wings unspotted. (643. bifurcatus, L.) 



93. Culex, L. 



1 (10). Tarsi with white rings. 



2 (3). Wings spotted. ( 6 45- annulatus, Schrk.) 



3 (2). Wings unspotted. 



4 (5). Abdomen grey with two rows of black spots. 



(651. dor salts, Mg.) 



5 (4). Abdomen brown with white or yellow bands. 



6 (7). Small species, 6 mm. (647. vexans, Mg.) 



7 (6). Large species, 8-9 mm. 



