. Transactions of the Entomological Society of London. ses as it passes from the portion which goes to form the outer protectivelayer is still more vacuolated afterwards. The construction of the first ootheca laid by the femalestarted about one oclock in the afternoon, and by twooclock, when it was first observed, about one-quarter hadbeen completed. The insect was head downwards on theperforated zinc side of the cage, and was so engrossed inthe process that, even when the cage was broken to piecesin order to get a better view, it was not in any way dis-turbed. The elytra were slight
. Transactions of the Entomological Society of London. ses as it passes from the portion which goes to form the outer protectivelayer is still more vacuolated afterwards. The construction of the first ootheca laid by the femalestarted about one oclock in the afternoon, and by twooclock, when it was first observed, about one-quarter hadbeen completed. The insect was head downwards on theperforated zinc side of the cage, and was so engrossed inthe process that, even when the cage was broken to piecesin order to get a better view, it was not in any way dis-turbed. The elytra were slightly raised and quite clear ofthe ootheca, and only the very tip of the abdomen wasimmersed in the froth, at certain times as far as the baseof the cerci, which, however, were always quite free andwere employed in feeling the surface under construction. The use of the elytra in the formation of the oothecahas been affirmed and contradicted many times. Thereis no doubt whatever that the ootheca can be constructed the Biology of Sphoiromantis guttata. 95. Fig. 2. Portions of sections of ootheca of Sphodronumtis guttata. I. Longitudinal Longitudinal horizontal. A and B. Passages entering successive v^s Egg. D. Chamber of outer protective layer. E. Protecting Hap in passage. p. Outer ^all of central portion containing eggs. G. Transverse partition between successive chambers. II. Dorsal flaps between which egg ohambera oommunioatewith the exterior. L. groove at each side of dorsal flaps. M. Vertical furrows on outer surface indicating position oftransverse partitions. \. Portion of transverse partition traversing protectivelayer (D). 96 Messrs. C. B. Williams and P. A. Buxton on without their aid. The photographs (PL IX and X)show the position in which the Mantis remained during thewhole process, and Adair (1914, I, p. 120) cut off the wingsof one specimen which was laying its eggs, in order to geta better view, without disturbing the Mantis or
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