GRYLLOTALPA GRYLLOTALPA. 123 



45 mm. Surface somewhat pubescent. Head extended, 

 pointed ; antennae rather short, but of many segments ; 

 eyes small but prominent ; lateral ocelli well marked, 

 but median one abortive. Pronotum large, shield-like, 

 slightly hollowed in front, rounded behind. Elytra 

 abbreviated ; radial nervure with many branches ; 

 nervures strongly marked. Wings fully developed, 

 forming, when folded, two long tails, usually extending 

 beyond the tip of the abdomen. Forelegs (fig. 18) very 

 strong, dilated so as to form digging organs; coxae large; 

 trochanter produced into a pointed process ; femora 

 compressed, sinuate on the lower margin; tibiae dilated, 

 lower margin with four pronounced teeth ; on the 

 inner side below the upper margin a slit-like tym- 



FIG. 18. Foreleg of Gryllotalpa gryllotalpa Linn. ( x 3). 



panum (or auditory organ) ; tarsi with first two seg- 

 ments dilated and pointed, the distal one small with 

 two small, straight, unequal claws. Mid and hind 

 leas much as in other Grvllodea, but the femora and 



/ 



tibiae somewhat dilated. Hind tibiae with a few strong 

 spines. AbJomen showing nine segments, and bearing 

 at its apex two hairy cerci, nearly as long as the 

 antennae. 



FEMALE IMAGO (PL XII, figs. 1 and 2).- -Very closely 

 resembling the male, for the abdomen, although show- 

 ing but seven segments, is very like that of the male, 

 and the wings in both sexes are fully developed. 

 Further there is no exserted ovipositor. A point of 

 distinction may be seen in the elytra, as the cells at the 

 base are more regular in the female than in the male. 

 The males seem to be scarce. Curtis says that in the 

 two he had seen the right elytron overlapped the other, 

 whereas the reverse was the case in the females. 



