340 



ZOOLOGY 



Locusta viridissima is one of the commonest European 

 forms. 



3. Gryllidae. — The crickets have a shorter and more 



Fig. 191. — Mole cricket 

 ( Gryllotalpa vulgaris). 



1. Eggs. 



2. Young just hatched. 



3. Larva after first 



moult. 



4. Adult, nat. size. 



cylindrical body than those of the two preceding families. 

 Their antennae are long and filiform. The male produces an 



Fig. 192. — Kocky Mountain Locust {Caloptenus spretiis). 



a. Females in yarious positions ovi- 



positing. 



b. Egg pod extracted from the ground 



with the end hroken open. 



c. A few eggs lying loose on the ground. 



d, c. The earth partially removed to il- 

 lustrate an egg mass already in 

 place and one being placed. 

 /. Shows where such a mass has heen 

 covered up. 



