ORTlIOrTERA OF INDIANA. 191) 



Only two of the six known sub-families are represented in the 

 United States, and one of these only by a single genus and species 

 along the southern border. The other is the 



Sub-family MANTIN^. 



The insects belonging to this sub-family have the upper surface of 

 the middle and fore femora and tibiae rounded, instead of carinate. 

 The head is unarmed, whereas, in the other sub-family, the Vatince, 

 it bears on the middle an erect process, as long as the rest of the 

 head. To the Mantime belong eleven known genera and sixteen 

 species from the United States. Of these two species, belonging to 

 different genera, have been taken in Indiana. 



KEY TO GENERA OF INDIANA MANTIN^. 



a. Broadest portion of pronotum far in advance of the middle; the sides 

 in front distinctly tapering. Fore femora armed on the lower outer 



margin Avith large spines only VIII. Stagmomantis, p. 199 



Off. Broadest portion of pronotum but little, if any, in advance of the mid- 

 dle; the sides in front parallel, or nearly so. Fore femora armed 

 on the lower outer margin with minute spines between the large 

 ones IX. GoNATisTA, p. 201 



VIII. Stagmomantis Saussure (1869). 



Body of male narrow, of female much broader. Head large, com- 

 pressed, triangular. Antenna? short and fine, inserted about the 

 middle of the face below the center of the eyes. Vertex narrow, 

 transverse, a little elevated above the eyes. Pronotum very long, in 

 our species forming two-fifths the whole body; the apical third wider, 

 the edges carinate and armed with minute, distant teeth. Tegmina 

 of female shorter than abdomen, opaque and bearing a distinct spot 

 or stigma of difEerent texture near the center. Tegmina of male, in 

 our species, longer than abdomen with stigma often indistinct or 

 wanting. Wings of the female, when expanded, of the form of a 

 quarter circle; those of the male longer and narrower. Abdomen of 

 female, large, more or less dilated; that of male narrow, the sub- 

 genital plate large. 



Two species occur in the United States, one of which is found in 

 the southern half of Indiana. 



