46 Mr. L. R. Crawshay ooi 



joint there is a small inner supplementary joint, terminated 

 by a short seta (which is sometimes scarcely apparent), 

 and a smaller process at the outer margin. The antenna 

 of the female are normally composed of ten joints (omitting 

 the supplement), but the ninth joint is often imperfectly 

 formed, being sometimes confounded with the preceding 

 one, so as to be scarcely visible, and sometimes entirely 

 absent. This deformity may even appear in different 

 degrees in the two antennae of the same insect. 



Among the imagines that emerged this year I obtained 

 only a single male, and this one happened to occupy one 

 of two shells which I examined on May 18th. It seemed 

 inclined to leave the shell, so I removed it, but it proved 

 to be quite helpless and could only lie on its side, in a 

 curved position, twisting the distended abdomen about 

 like a pupa. I put it on some moss in a shady place, and 

 its condition gradually advanced tilf. seven days afterwards, 

 it was quite strong. For breeding purposes I had there- 

 fore to rely on this male alone, and it paired successively 

 with four females (twice over with one of them) on May 

 25th, 31st, June 2nd, 4th, and 9th, respectively. 



In the spring of the previous year a few eggs had been 

 laid by some infertile females, a week after emerging, 

 on tbe moss in which they were kept ; but this year, 

 under similar conditions, the first female that paired 

 passed six days without laying : there was also reason for 

 believing that the eggs are naturally secreted. I therefore 

 cut a piece of fine turf from the Downs, ten inches by six 

 inches and two inches deep, which I fitted closely into 

 a shallow deal box, and on this the females were after- 

 wards kept near an open Avindow. The following is an 

 account of the movements of these four females which 

 I reserved, and the attempt to breed from them. 



The first ^, as stated, was not put on the turf till six 

 days after pairing, namely on May 31st. From May 31st 

 till June 4th she was up about the surface, generally 

 resting in an exposed position on the short herbage, during 

 each day, but going down every evening under the grass. 

 On June 5th she came up in the morning and rested in 

 the usual attitude on a short blade of grass, with the heavy 

 body curving under her, and thus remained, never leaving 

 the position, so far as I know, day or night, until June 9th, 

 when she fell off and died without having laid. 



A second % emerged on May 26 th and paired on the 



