﻿242 F. W. EDWARDS — A KEY FOR DETERMINING THE 



dorsal surface of the abdomen : I have seen no transition between species with 

 abdominal scale-tufts and those without them. The divisions of Anopheles found 

 in Africa to which generic names have been given are as follows : 



Anopheles, Mg. Type ... ... maculipennis, Mg. 



Myzomyia, Blanch. „ ... ... rossi, Giles. 



Pyretophorus, Blanch. „ ... ... costalis, Lw. 



Feltinella, Theo. „ ... ... pallidopalpi, Theo. 



Myzorhynchus, Blanch. „ ... ... sinensis, Wied. 



Christy a, Theo. „ ... ... implexa, Theo. 



Neocellia, Theo. „ ... ... indica, Theo. 



Nyssorhynchus, Blanch. „ ... ... albimanus, Wied. 



Cellia, Theo. „ ... .. pharoensis, Theo. 



Feltinella is indistinguishable from Pyretophorns and Cellia from Nyssorhynchus. 

 The group called " Nyssorhynchus " in the fourth and fifth volume of Theobald's 

 Monograph is really unnamed, since the type species of Nyssorhynchus has 

 pronounced lateral scale-tufts. 



Key to the African Species of Anopheles. 



1. Thorax Avith distinct broadish-elliptical scales (except in A. 



christyi) ; female palpi shaggily scaled ; abdomen usually more 



or less scaly ... ... ... ... ... ... ... ... 2. 



Thorax clothed with hairs or narrow almost hair-like scales ; 

 scales of female palpi usually appressed ; abdomen without 

 scales on the dorsal surface ... ... ... ... ... 13. 



2. Abdominal scales obviously present on all the segments ... ... 3. 



Abdominal scales absent, or if present, confined to the terminal 



segments (" Nyssorhynchus") ... ... ... ... ... 8. 



3. Abdominal scales forming distinct projecting lateral tufts (Nys- 



sorhynchus, [= Cellia]) ... ... ... ... ... ... 4. 



Abdominal scales not forming tufts (Neocellia) ... ... ... 9. 



4. Last joint of hind tarsi light, or at least light-tipped ... ... 5. 



Last joint of all tarsi entirely dark ... ... ... ... ... 7. 



5. Last joint of fore and mid tarsi all dark ; rather large yellowish 



species (5-6 mm.)* ... ... ... ... ... ... 1. pharoensis. 



Last joint of fore and mid tarsi light or light-tipped ; smaller, less 

 yellow species (4.5 mm. or less) ... ... ... ... ... 6. 



6. Last joint of all tarsi wholly yellow ; remaining joints regularly 



ringed with black and yellow ; very small species (3 mm.) 2. cinctus. 

 Last joint of all tarsi white tipped ; remaining joints not ringed ; 

 larger species ... ... ... ... ... ... 3. jacobi. 



7. Hind tarsi entirely dark ... ... ... ... 4. argenteolobatus. 



First four joints of hind tarsi with apical white rings ... 5. squamosus. 



8. Last tarsal joint white ; small species (3.5' mm.) ; Egyptian 



6. maculicosta. 

 Last tarsal joint not white ; large species (7 mm.) ; East African 



7. christyi. 



* Unless otherwise stated, measurements denote the length of the body exclusive of the 

 proboscis. 



