227 



N. stephensi 



Ovum. — Upper svirface broad, except in central 

 portion where encroached upon by floats. Floats 

 placed on margin of upper surface so that they 

 touch, or nearly touch, one another in middle line. 

 Floats short and almost globular. Fringe not 

 well developed. Lower surface not ornamented. 



N. theobaldi 



Ovum. — As the females of this species have 

 only been very occasionally caught by ' us in 

 houses, we have not been able to describe the 

 ovum as deposited by the insect. Fully developed 

 ova removed from a bred specimen showed, how- 

 ever, that the ovum resembled that of N. maculi- 

 palpis. The floats were rather short and situated 

 far . forwards as in N. stephensi. The fringe is 

 fairly developed, but does not pass over the floats. 



Type 3. M. turkhudi 



M. turkhudi is a very aberrant type, so far as 

 the ovum and larva are concerned. Both the 

 ovum and larva approach to the characters of the 

 Culex ovum and larva. The eggs were laid upon 

 a floating object. When placed upon water they 

 sank. They were laid in the heaped- up manner 

 sonietimes adopted by Anophelines, especially M. 

 rossii and N . maculipalpis. The chief characters 

 of the ovum are : — 



I. No separation of an upper surface as in 

 all other Anopheline ova. At the thicker end of 

 the ovum there is an oval area about a quarter 

 the length of the whole egg. This is glistening 



