CICADAKIyK. 



5:;r> 



septendecim Linn. (Fig. ,JoG, A ; f/, drum ; r, <l, male genital 

 hooks ; B, C. Cassinii Fisher ; <:/, drum ; e, /, genital hooks. 

 Fig. 537, c, with expanded wings) which does not in- 

 habit Northern New England, are well described by 

 Harris and Fitch. The young larvae feed on the roots 

 of the oak and apple, clustering upon the roots and suck- 

 ing the sap with their beak-like mouths. They live 

 seventeen years. Different broods appear in different 

 localities, so that each year they are seen in some part 

 of the country. 



The Editors of the American Entomologist, p. 63, give 

 additional information regarding its habits. It appears 

 during the last half of May, and disappears about the 

 fourth of July, and the eggs hatch between the twentieth 



c/ OC3 



of Jtilv :uid the first of August. The eggs (Fig. 



C7 OO \ ~ 



f>37 ; d, c, enlarged) are deposited in pairs in 

 the terminal twigs of different species of decidu- 

 ous trees, especially the oak (Fig. 538, punc- 

 tured twig; Fig. 539, a twig which has been FU ' v;s - 

 punctured and then healed over). The larva- hatch 

 out in about six weeks after they are laid, and (Fig. 

 540, newly hatched larva) drop to the ground in 

 which they live feeding on roots of trees for nearly 

 seventeen years, the pupa state (Fig. 537 ; (/, h, cast 

 pupa and skin; r, adult) lasting but a few da vs. 

 When about to transform into the winged state thev 

 ascend to the surface, making cylindrical burrows, 

 'firmly cemented and varnished so as to be water- 

 Fig. 539. proof." Mr. S. ,S. Rathvon has observed that in low 



and wet localities the pupie extend these "galleries from four 



to six inches above ground (Fig. 541 ; a, full view ; /;, section) 



leaving an orifice of egress even 



with the surface (c). In the 



upper end of these chambers 



(c) the pupa- would be found 



awaiting their approaching 



time of change. They would 



then back down to below the level of the earth, as at d, and 



issuing forth from the orifice would attach themselves to 



