72 
(iaurax arunvii Q>iH\. — Adults ^vcre bred March 2 and 9, 1886, from 
an egf^ sac of Aryiope riparia Hentz. Others were received from Dr. 
A. Davidson, Los Anjrelos, Cal., who reported having bred them from 
larvic found amonj^ spiders' eggs. 
Genus Elachipteea Macq. 
The rearings indicate that the larva* of this genus usually attack 
jdants not previously injured b}' other insects, but a few evidently live 
in the deserted burrows of otlier insects; and while the greater number 
evidently feed uj)on living vegetable matter, a few were found in sit- 
uations which indicated that they prefer decayed to living vegetable 
matter. 
Elachiptvra Jongula Loew. — On August 14, 1884, several plants of 
Fanicum cnisgalli were received from F. M. Webster, Oxford. Ind.; the 
npper parts of these ])lants were infested with the larvie of this insect, 
the adults of which issued on the 2-d and 3()th of the same month. 
Two adults issued July 15, 1886, from plants of oats received on the 
2d of the same month. Others were received from W. B. Alwood, 
Columbus, Ohio, who reported having bred them from oats. 
From a number of plants of fall wheat received July 10, 1890, from 
F. M. Webster, Lafayette, Ind., two adult Hies issued the next day. 
Elachiptera nigricornis Loew. — Adults of this species were also bred 
from the fall wheat plants referred to in the preceding paragraph. 
Elachiptera costafa Loew. — This species was also bred from the above- 
mentioned plants of fall wheat. 
Three adults issued July 15, 1886, from plants of oats received on the 
2d of the same month. One specimen was received July 9, 1886, from 
W. B. Alwood, Columbus, Ohio, who also bred it from oats. 
Two adults were bred by the writer in McHenry County, 111., from 
larva' found in a decayed cavity in the roots of a living garden radish. 
On August 1*9, 1894, a melon root was received from M. P. Barnard, 
Kenneth Square, Pa. ; the root was decayed in several places, and in 
the cavities were larv;e of this insect. The adults issued September 
14 and October 10 of the same year. 
Elachiptera nigriceps Loew. — Issued August 15, 1883, from i)ond lily 
plants infested with the larva' of Pyransta pent talis which had bur- 
rowed into the stems and seed pods. The i)lants were collected at 
Washington, D. C, August 1. 
On August 24, 1883, Mr. A. Koebele found several larva' of this insect 
at Washington, D. C, in a gall-like fungus growth on the stem of a 
water lily; three adults issued on the 12th of the following month. 
Adults were also reared August 25, 1886, from decaying water lily 
plants collected by Theo. Pcrgande at Washington, 1). C. 
From plants of Panicum cnisgalli received August 14, 1884, from F. 
M. Webster, Oxford, Ind., several adults issued on the 11th of the fol- 
lowing month. 
