Anopheles culiciformis. 



The male of this mosquito differs from all other " anopheles" 

 in that the claws on the fore legs are single and uniserrated. There 

 are structural differences too in the larva which differentiate this 

 mosquito from all others. 



Characters of the larva (Fig. facing page 122). The frontal 

 hairs are simple and unbranched ; the median hairs are very 

 close together and long ; the external angular very short. The 

 most characteristic and constant feature of this larva is the peculiar 

 structure of the " basal hair." In most " anopheles" this hair 

 is much branched ; in the larva of this species it is made up of a 

 long stalk covered with a few hairs ; the extremity appears as if 

 jointed to the stalk, and is somewhat swollen and covered with a 

 corona of fine hairs. The next point in which this larva differs 

 from other " anopheles" is that the " balancer" hair on the third 

 abdominal segment is simple and unbranched. A third peculiarity 

 is found in the fact that well-developed palmate hairs are found on 

 all the abdominal segments except the first and last, and there is 

 also a pair on the thorax. The shape of the leaflets of each pal- 

 mate hair most nearly resembles that of the leaflets of the palmate 

 hairs of the larvae of barbirostris. There is no well defined blade 

 as contrasted with the terminal filament in each leaflet. 



Habitat and observations. This mosquito was bred from larvae 

 collected near Karwar, in the Bombay Presidency, by Dr. Cogill. 

 There seems to us to be no doubt that it would be placed by 

 Mr. Theobald in his genus Stethomyia. 



[123 



