Ea i ili-Ma son Cater p iUars. 



225 



French naturalists, Geoffrey, Desmarest, and Latreille. This 

 grub, which may be met with during spring, and also in 

 summer and autumn, in sandy places, is long, cylindric, 

 soft whitish, and furnished with six scaly brown feet. The 



Nest of the Grubs of Ephemerae. 



A, The Grub. B, Perforations in a river bank. C, One laid open to show the 

 parallel structure. 



head is of a square form, with six or eight eyes, and very 

 large in proportion to the body. They have strong jaws, 

 and on the eighth joint of the body there are two fleshy 

 tubercles, thickly clothed with reddish hairs, and armed 



Nests of Ephemera in holes of Cossus. 



with a recurved horny spine, the whole giving to the grub 

 the form of the letter Z. 



With their jaws and feet they dig into the earth to the 

 depth of eighteen inches, forming a cylindrical cavity of 



