June, '08] ENTOMOLOGICAL NEWS. 275 



servations. While I have secured a number of my species on 

 shaded windows and vine-clad walls of buildings, I have had 

 far better results collecting- the adults at night when they are 

 readily attracted to lights. I have secured all my life histories 

 by preparing vegetable cultures, in which they breed in great 

 numbers. The past year two new life histories have been 

 found, one of which proves to be that of a new species. A 

 number of specimens collected between March 20 and June 20 

 have been identified as Ps. schizura Kin. Their wing length 

 varies from 1.8 mm. to 2.8 mm., and they all have the black 

 tufts at the tip of the veins and the alternate black and white 

 markings which give the wings a mottled appearance. A few 

 specimens collected between April 18 and May 24 have been 

 identified as Ps. cinera Bks. This species has also been found 

 fairly common in the caves of Indiana by Mr. A. M. Banta,* 

 so that it probably appears over the entire range from the At- 

 lantic to the Pacific. 



Early in the spring of 1907 I collected a quantity of dry 

 weeds and grass, and also some green grass and curly-dock 

 leaves, which were put into two large square glass jars, covered 

 with water and placed in the insectary to thoroughly ferment. 

 In a short time mosquitoes appropriated the jars for their use. 

 The adults and larvae of the mosquitoes were collected and 

 destroyed, and glass covers placed over the jars for a time. 

 Later the covers were removed and early in June adult Psycho- 

 dids were found in one of the jars. The cover was replaced on 

 this jar and a large brood of adults appeared on the I3th of 

 June. This jar was fairly teeming with them, while the other, 

 which stood by its side, contained none at all. The first brood 

 of larvae and pupae escaped my observation, but on the I5th 

 of July a second brood of larvae appeared, when the jar was 

 removed to my laboratory and daily observations made on the 

 habits of the larvae, pupae and adults. After the first adults 

 were found in the jar, it was kept covered except when speci- 

 mens were being removed. In this way five broods were reared 

 during the summer. The adults of the first brood appearing 

 June 13-20, the second July 17-20, the third August 8-12, the 



* Carnegie Institute of Washington, publication No. 67, p. 84. 



