i88 



(in some species) be free from striations. In other 

 species the appearance is rather that of a white striated 

 rim. In all species of Anopheline ova yet described, a 

 striated frill or rim is present. The width and extent 

 of the frill vary in different species. 



Type I. Ova have the upper surface very narrow, 

 with the lateral floats not touching the margin (Fig. 

 62 : i). 



The species with ova of this type are 



M. barbirostris M. culicifacies 



M. nigerrimus M. listoni 



A. bifurcatus 



Type 2. Ova having a more or less broad upper 

 surface, with the lateral floats touching the margin 

 (Fig. 62 : 2, 3, 4, and 6). 



Species having ova of this type are 



M. rossi N. fuliginosus 



Ce. pulcherrima N. stephensi 



A. maculipennis A. algeriensis 



Type 3. Ova with no floats, and with upper 

 surface rudimentary (Fig. 62 : 5). 



M. turkhudi 

 M. azriki 



Species having ova of the first type have in all 

 cases been species breeding in either open natural 

 waters or running streams. 



Species with ova of the second type are in general 

 found breeding in pools. 



The only ova as yet systematically described are 

 those of the Indian Anophelines. Further observations 

 will probably add farther types to the above. 



