Env. News, Vou. XIX. Plate XXI. 
MANEE ON BOLBOCERAS AND ANUROGRYLLUS. 
a. Rolboceras lacarus. b. Mound and shaft of Jererus. c. Anurogrylius muticus. 
d. Mound and shaft of seaticus. ¢ Horizontal chamber of aruticus. 
t. Retreat shafts of seaficus. 
