igoo] ENTOMOLOGICAL NEWS. 467 



the east where the others were caught. There is a line of 

 hills to the west and about three miles from the college, where 

 they are also found, and this one had probably come from that 

 side. 



May 28th. Took a fresh male genutia in my garden, feeding 

 ■on candy tuft blossoms. This is the only one seen by me in 

 cultivated grounds. 



June ist. Saw eight gemitias, five of which, all freshly 

 emerged males, were caught. 



My notes show that the majority of the flies are caught in 

 open woods, along the top of rocky ravines ; that occasionally 

 they stray to the open sunny glades at the bottom of the nar- 

 row valleys where streams flow, and where there is a sprinkling 

 of flowers. When pursued they sometimes take to the open 

 hill-tops, but usually fly down hill through the rocky woods. 

 I note only one capture in cultivated grounds. 



The records of other years are substantially as above, with 

 slight differences in dates. 



The ^%% of genutia is about 90 mm. long and 33 broad, 

 orange yellow, and under the glass shows prominent longi- 

 tudinal ribs, with regiilar and closely parallel cross ribs. The)' 

 are often laid on the flower pedicels, occasionally on sepals and 

 petals, but most usually on the rachis at the base of the pedicel. 

 I have never seen one on a leaf. Usually but one egg is found 

 on a plant ; often two, and rarely three ; in the latter cases 1 

 believe these to be laid by different females or at different 

 visits by the same female. Young larvae in my cages refused 

 to eat either Capsella or Draba, the only other wild cruci/em I 

 could at that time find, and I had to transplant Dentaria, bring- 

 ing home in my vasculum the plants with balls of earth around 

 the roots and setting in jars in my breeding cage. Deyitaria 

 will keep for several weeks if the rhizomes are left attached 

 and placed in jars of water. Eggs laid on the 19th of April 

 (collected by following the gra^'id female), hatched on the 

 24th and pupated on May 14th. When about full grown the 

 larvae are an inch in length, of a clear velvety apple green, 

 slightly golden, with short scattered black spines and a white- 

 3^ellowish lateral line. They eat only the seed-vessels (siliques) 



