270 F. VV. EDWARDS. 



4. Aedoeagus short and broad, without leaflets . . , . . . plumheus, Hal. 

 Aedoeagus long and narrow, with leaflets at the tip 



maculipennis, Mg. ; eluhis, sp. n. 



5. Spatulate process long and narrow ; ninth tergite without definite pro- 



cesses ; long hair at middle of side-piece moderately developed 



lindesayi, Giles 

 Spatulate process shorter and broader ; ninth tergite with distinct pro- 

 cesses ; long hair at middle of side-piece stouter, almost spine-like . . 6 



6. Processes of ninth tergite short and broad . . . . punctibasis, sp. n. 

 Processes of ninth tergite elongate . . hyrcanus, Pall. ; maiiritianus, Grp. 



Larvae. 



1 . A row of six large plumose hairs across middle of head . . . . . . 2 



These hairs vestigial, simple . . . . . . . . . . plumheus, Hal. 



2. Outer anterior clypeal hair thickly branched, dendriform . . . . . . 3 



Outer anterior clypeal hair simple or slightly branched . . bifurcatus, L. 



3. Innermost shoulder-hair branched from base or nearly . . manritianus, Grp. 

 Innermost shoulder-hair branched only at tip, if at all . . . . . . 4 



4. Palmate hairs on abdominal segments i-vii (always ?) . . hyrcanus, Pall. 

 Palmate hairs on abdominal segments iii-vii only 



eliitus, sp. n. ; maculipennis, Mg. 

 The larvae of A. algeriensis and A. lindesayi are insufficiently described for 

 inclusion in the above table ; that of A. punctibasis is not yet described. 



1. Anopheles (Anopheles) algeriensis, Theo. (fig. 2, b). 



Anopheles algeriensis, Theobald, Mon. Cul. iii, p. 21 (1903). 

 Anopheles lukisi, Christophers, Ind. J. Med. Res. iv, p. 120 (1916). 



Easily distinguished by the unspotted wings and the absence of a distinct tuft 

 of long white scales on the front of the head. The mesonotum is uniformly dull light 

 brown, and clothed with dark hair only, the small yellowish hairs or hair-like scales 

 which are found in A . bifurcatus being absent in this species. In the female the second 

 segment of the palpi is considerably longer than the first or the third and fourth 

 together. 



The male hypopj/gium, which has not as yet been described, is very distinct. 

 The processes of the ninth tergite (ventral processes of Christophers) are very short, 

 less than half as long as the breadth of the tergite. The side-pieces have a strongly 

 differentiated bristle on the inner side near the tip, as in A. bifurcatus ; there is a 

 single very strong basal spine, situated on a large tubercle, with its tip bent ; the 

 outer basal spine is absent or represented only by one or two scarcely difterentiated 

 and inconstant bristles. The claspettes are trilobed, the first lobe bearing two or 

 three strong, pointed, closely approximated spines, the second several short hairs, 

 the third (innermost) three nearly equal, moderately strong bristles. The aedoeagus 

 bears two or three pairs of long delicate leaflets at its tip. 



The larva is unknown. Sergent, indeed, gives a short, incomplete description 

 and some figures of a larva which he supposes to be A. algeriensis, but he was unaware 

 of the real distinctions between A. algeriensis and A. bifurcatus, and his statements 

 are insufficient to enable us to decide which of these species he had before him, or 

 whether he had both. Sergent 's figure of the egg is reproduced in fig. 2,b ; it is not 

 improbable, however, that this really represents the egg of A . bifurcatus. 



The type of A . lukisi shows faint traces of pale banding on the hind tarsi ; in 

 the Mediterranean specimens the tarsi are entirely dark, but there appear to be no 

 other difi'erences. The colour of the mesonotum varies from yellowish to rather 

 dark brown. 



