196 SECOND REPORT OF THE STATE ENTOMOLOGIST 



" Larvcie in different stages, pupje and winged insects were found May 

 2d. The winged specimens had not hibernated but matured during 

 April. The winged insects were found till about the 15th of June. 



" The first larvae were noticed June 26th, although there may have 

 been some earlier. The eggs hatch in about fifteen days. 



" Winged insects are again found in September, and larvge in Septem- 

 ber and October. The latest deposited eggs winter over and hatch dur- 

 ing March and April. 



" This shows the species to be two-brooded. The first brood, from 

 eggs deposited in the fall, some of which hatch, the larvae wintering 

 over, while others hatch in spring. Specimens acquire wings from the 

 latter part of April until the middle of June. 



" Eggs from the spring brood are deposited the latter part of May 

 and early part of June, and the winged insects from these eggs are 

 noticed in August and September." 



Other Double-brooded Species. 



It has been claimed by some writers that the Rocky mountain locust, 

 Caloptenus spretus, produces two generations annually, but a careful 

 examination of the evidence educed in favor of the claim shows it to 

 be, according to Prof. Riley, " overwhelmingly in favor of normal 

 single broodedness. ********* While we admit 

 the possibility of a second generation, we believe that it is exceptional, 

 and that the insects composing such second generation seldom, if ever 

 attain maturity or perpetuate their kind " {First Rept. U. S. Entomolog 

 Commis., 1878, pp. 242, 243). 



Of Caloptenus atlanis, very nearly allied to C. spretus, Prof. Riley 

 states {loc. cit. sup.), "we have proved it to be double-brooded." This 

 statement should be qualified, by referring it to St. Louis and its 

 more southern localities, for in a communication received from Prof • 

 Riley, he expresses his doubt if, at St. Louis, the second brood is always 

 successful in perpetuating itself, and adds that " later observations in 

 New England convince me that in northern localities it is invariably sin- 

 gle-brooded." 



In addition to 0. viridifasciata, we may ex[)ect that there will be 



found to be a spring and an 

 autumn brood in at least several 

 of the species of Stenobotlirxis 

 and Tettix, some of which are 

 known to hibernate in the half- 

 grown condition. Of the former, 

 8. maculipennis Scudder, shown ^^^._ 5;, _ 



i ' C -T^-o -iiOiir Tettix gran- 



F.a.58.-STENOBOTHRUS MACULIPENNIS ^^Flg. 5 8, OCCUrS Ul thC StatC Of BLATA - t h e 



- a, mature insect; 6, pupa ;c, larva. ^^^^ york, together with S. GroVlocust 



mqualis Scudd., S. bilineatus Scudd., S. jjropinquus Scudd., and *S'. cur- 



