75 
issued from February IS to Ai)ril 27, 1S7S. The larvn' infested tlie 
seeds as well as tlie pods, and as niayiy as ci^ht larvae soinetiines 
occurred in a siu<;le cavity. Another lot of infested seed i)()ds was 
received January 25, 1879, from J. A. Warder, Xorth Jiend, Ohio, and 
tlie adults issued February 18 and 20 and March 17 of the same year. 
Genus Siphonella. Macq. 
Our breeding records indicate that while the larv;e of one species live 
in the deserted burrows of other insects, those of a second 8j)ecies feed 
upon the egg* shells of spiders, thus combining in their habits those of 
the genus Gaurax with those of the other genera of this family. 
Si2)honeUa inquUina Coij. — From a cecidomyiid gall on an undeter- 
mined species of Aster collected October 10, 1874, by O. Lugger, at St. 
Louis, ]Mo., an adult of this species issued February 15 of the following 
year. The gall when first found did not contain any cecidomyiian,and 
the Siphonella had evidently lived as an inquiline after the original 
occupants had abandoned the gall. 
From a puparium found in a cavity in an apple an adult issued May 
28, 1881 ; the cavity was doubtless made by a caterpillar of Carjwcapsa 
pomoneUa. 
On June 20, 21, and 23, 1884, adults of this insect issued from twigs 
of Cephalanthus occidentalis collected on the 17th of the month by 
A. Koebele in Virginia 5 the twigs were also infested by caterpillars 
of Laverna cephalanthiella Cbamb. 
An adult was received from Miss M. E. Murtfeldt, Kirkwood, Mo., 
who stated that she reared it February 11, 1891, from a berry of Sola- 
num carolinense. 
Siphonella oscinina Fall. — Four adults issued August 25, 1895, from 
an Qgg sac of a spider found on the 17th of the month by Theo. Per- 
gande, at Eiverview, Md. 
FAMILY AGROMYZID^. 
Dr. H. Loew, who has written more extensively concerning the sys- 
tematic arrangement of the Diptera of this country than any other 
author, erected a distinct family for the genus Phytomyza, but its mem- 
bers are altogether too closely related, structurally and also in regard 
to their food habits, to the geuns Agromyza to be placed in a different 
family, and I have therefore followed Dr. Schiner in uniting the so- 
called family Phytomyzid?e with the Agromyzid?e. Eepresentatives 
of four of the genera have been bred at the insectary of this Depart- 
ment. These genera also occur in Europe, where they are reported as 
having the same habits as in this country. The larv?e of one genus, 
Leucopis, prey upon plant lice and scale insects, while those of the 
other three genera, Ceratomyza (formerly known as Odontocera, a pre- 
occupied name), Agromyza, and Phytomyza, feed on living plants by 
forming burrows or mines in various parts of them, but principally in 
the leaves. 
