BEHAVIOR OF SPIDERS AND OTHER INSECTS 429 



deposits its eggs in the leaf -scars before the leaves appear. He 

 finds that, in confinement, Ypsolophus pometellus oviposits in 

 the latter part of May. 



Emery (22) discovered that Simulium vittatum breeds only in 

 running water. The female attaches strings of 200 to 300 eggs 

 to the rocks. There are three broods a year. 



Bloeser (8) states that Siphona plusiae deposits one or more 

 eggs on the outside of the Phrygnidian larva. 



Welch (100) reports that the fly Hydromyda confluens Loew. 

 constructs a gall on the submerged petiole of the water lily. 

 He thinks the fly crawls down the stem and oviposits beneath 

 the water. 



Palmer (67) describes the laying habits of certain lady beetles. 



FOOD PROCURING AND DEFENSIVE INSTINCTS 



Campion (14) describes the feeding behavior of some dragon 

 flies; Coad (16) of the boll- weevil and Houser (37) of Con- 

 wentzia hageni. 



According to Bloeser (8) the larva of Siphona plusiae pene- 

 trates the body wall of the Phrygnidian larva and feeds upon 

 its entrails. In ten days it is mature. 



Branch (10) asserts that Entylia sinuata, a Membracid, feeds 

 on the thistle {Cnicus altissimus). 



By capturing flies and removing their prey from them, Brom- 

 ley (11) has made a careful study of the food of eighteen species 

 of Asilidae. He gives a list of prey that covers nearly six pages. 



Emery (22) finds that the buffalo gnat {Simulium vittatum) 

 will bite before ovipositing. 



Girault (26) deprived half grown ant lion larvae of food for 

 twenty-five days and found them still alive. 



Guyenot (28A) found that the little fruit fly (Drosophila 

 ampeliophila) develops normally when fed on sterilized yeast. 



Heath (32) records an instance of a phalangid drinking milk. 



The investigations of Hewitt (34) show that the dung fly 

 Scatophaga stercoraria L. destroys large number of flies, especi- 

 ally Muscoid flies, by seizing the victim with its legs and pierc- 

 ing the neck with a thrust of the proboscis from below. After 

 a moment's sucking, the fly is turned over and the proboscis 

 thrust between the abdominal segments. 



In another paper (35) he states that he could not get the 



