50 INSECUTOR INSCm^ MENSTRUUS 



Aedes squamiger Coquillett. 



This species breeds in the sah marshes. The adults are 

 found sparingly in the canyons along the bluff at the north 

 end of town and occasionally bite in the city in evening or 

 morning. Eggs obtained from captured females were of the 

 usual shape, rather thickly fusiform, one side flattened, mi- 

 cropylar end rounded and with a small annular cushion ; white 

 when deposited, turning deep black ; smooth. The eggs are 

 laid singly. 



Aedes taeniorhynchus Wiedemann. 



Found breeding on the salt marshes in 1906 by Mr. Caudell 

 and the writer. No specimens were taken about town and the 

 species cannot be considered as troublesome. 



Uranotaenia anhydor Dyar. 



Described from a single larva found in a pool in Sweet- 

 water Valley in 1906. The larvse occurred in fair numbers 

 in the large pool described under Culex crythrothorax. The 

 adult has black legs and a violet line on each side of the disk 

 of the thorax, but no central line, thus easily differentiating 

 it from other known species. Only bred specimens were ob- 

 tained, the adults not coming to bite even in the pool itself. 

 Their habits may be nocturnal. The larvae lie quietly in the 

 masses of dead and living reeds among the Lemna and 

 Spirogyra, the tube at the surface, the mouth biting hold of 

 a root of Lemna or similar object below the surface, the body 

 oblique, the head often bent at an angle. They feed only at 

 infrequent intervals. 



Anopheles pseudopunctipennis Theobald. 



The larvae occurred in the large pool mentioned under Culex 

 crythrothorax and in a pool in the Sweetwater Valley that had 

 been damaged by the floods, but was returning to normal 

 conditions. This species seems to favor these permanent 

 reedy pools. 



