REPORT ON MOSQUITOES. 163 



ponds or swamp areas are favorite breeding places. Pools con- 

 taining grassy or other vegetation are nearly always infested, and 

 ponds with lily pads, dock, saggittaria and other plants of a 

 similar character are danger points. 



The larvae need only a mere film of water, and this being 

 found over a leaf or at a grassy edge, protects them from the 

 usual natural enemies. This point has been elsewhere referred 

 to and the practical bearing has also been discussed. It need 

 only be added that no other mosquito has as wide a range of 

 breeding places as have the species of Anopheles. 



ANOPHElvES PUNCTIPENNIS, SAY. 



The Mottled Wing Anopheles. 



A medium sized dark brown mosquito with the upper surface 

 of the thorax dark brown at the sides and with several narrow 

 lines of yellowish gray hairs appearing as one broad gray stripe 

 in the center. The beak and legs are unhanded ; the wings densely 

 clothed with black and yellow scales, two large black patches 

 and two smaller yellow ones on the front margin especially con- 

 spicuous. The abdomen is dark brown, profusely scattered with 

 yellowish brown hairs. 



Description of the Adult. 



This species varies considerably in size and is of slight build. 

 The body measures from 4 to 5.5 mm., = .16 to .22 of an 

 inch in length, and the beak is just about half the length of the 

 body. The head is dark brown, with yellowish white mixed with 

 brown scales in the center of the occiput near the angle of the 

 eyes, the posterior margin of the eyes with a faint yellow border 

 and with a tuft of yellowish hairs between the eyes projecting 

 forward over the head. The proboscis is uniformly dark brown. 

 The palpi in the female (fig. 45, 21) are dark brown, with some 

 pale yellow hairs at the extreme tip, long and slender, four 

 jointed, the first joint swollen at the base, the second longest, 

 each succeeding one shorter. The male palpi (fig. 41, 11) are 

 dark brown, paler toward the apex, with long hairs on the central 

 and tip of basal joint, three jointed, the basal joint verv long, 

 the apical two short and greatly swollen. The antenna? are dark 

 brown in both sexes with the basal joint of the female paler. 



