216 



Annals Entomological Society of America [Vol. VI, 



Burrows of the second instar of Cicindela are most frequently 

 visited. This is probably due to the fact that these holes are 

 most abundant. The burrows of young spiders {Geolycosa) 

 which have a web around the opening, are not rejected while 

 holes of the first and third instars of Cicindela as well as par- 

 tially covered holes produce the reaction at least once. General 

 results of one observation are shown in table I. 



TABLE I. 



A Se\'t:n Minute Observation of the Egg Laying Reaction of a Female 



Spogostylum, July 16, 10:30 a. m. 



A summary of the observation of egg laying is as follows: 

 Egg laying thrusts were executed, by two individuals observed, 

 before holes as follows: One first larval stage of the host, 

 eighteen second larval stages including one partially covered 

 with a stick, and a shallow one (filled below the surface) ; one 

 third stage of Cicindela, one small spider hole. One large 

 nondescript hole arrested the flight but did not produce the 

 egg laying thrust. 



S. Egg, {Fig. 4). 



A female taken while laying was found to contain a very 

 large number of eggs, which could be squeezed out by a gentle 

 pressure upon the abdomen. The eggs are light brown ellip- 

 soids .28 mm. by .12 mm. They are not adhesive. 



