176 EEPORT OF STATE GEOLOGIST. 



cies in which both sexes are known. Prof. Lawrence Bruner, an ac- 

 knowledged authority on North American Orthoptera, writes mc 

 that, as far as he knows, "all the females of Temnopteryx are short- 

 winged, and all the males long-winged like the majority of the spe- 

 cies of Ischnoptera." Prof. A. P. Morse kindly examined Mr. Scud- 

 der's collection for me, and states that, as far as he was able to 

 ascertain, it contains no short-winged, males of Teninopteryx. 



Saussure and Scudder, in their "Keys to Genera of BlattinlEe," also 

 state that in the genus Ischnoplera the "tegraina are completely de- 

 veloped or in the female rarely abbreviate." In all my collecting, I 

 have never seen a long-winged, female of Ischnopiera. Bruner has 

 written me that he does not possess a long-winged female or a short- 

 winged male of the genus, and Morse also states that Scudder's col- 

 lection contains no long-winged females of Ischnoptera. From these 

 facts, and from others'gathered in the field and mentioned under the 

 different species, I have concluded that the species of Phyllodromia 

 and Teninopteryx listed by Scudder in his Catalogue* are but the 

 females of certain species of Ischnoptera and have so placed them in 

 the present paper. As a result, representatives of but three genera 

 of the sub-family Blattince occur in the State. These may be sepa- 

 rated by the following 



KEY TO GENERA OV INDIANA BLATTIN.E. 



a. Sub-genital stylets present in the males. Tegmina of females abbre- 

 viate, reaching but little, if any, beyond the middle of the broad 

 al)domen.t (Native species.) 



b. Tegmina corneous; those of female obliquely truncate at apex. 

 Ulnar vein of wings of male without branches to the vena 



dividens III. Temnopteryx, p. 176 



bb. Tegmina membranaceous or somewhat coriaceous; those of fe- 

 male usually broadly rounded at apex; sometimes angulate, 

 but not truncate. Ulnar vein of wings of male emitting com- 

 plete branches to the apical margin and incomplete branches 



to the vena dividens IV. IsoiiNorTEUA, p. ITS 



aa. Sub-genital stylets absent in the males. Tegmina of both sexes fully 

 developed. Size small, body narrow. (Introduced species.) 



V. P.LATTEr,T..\. ]). IS" 



III. Temnopteryx Brunncr (1865). 



Body oblong, that of male rather slender; tluit of female stouter, 

 with the abdomen broader than the thorax. Head large and flat- 

 tened; the vertex swollen. Antenna longer than the body, rather 

 stout. Ocelli wanting, Pronotuni and tegmina somewhat corneous 



*■ He does not li.«t T. deropelti/ormin Brunn. 



tin the females of l.pennHulvanica they soiuetimes cover three-fourths of iibdouien, but 

 never reach its tip. 



