THE CANADIAN KNTOMOLOGIST. 243 



instead of being equal to the length, as in rotundipennis, is much narrower 

 than the length. The greatest difference, however, is seen in the marginal 

 apophyses of the segment preceding the anal plate. In obovatipennis 

 these are arched, divergent, tapering, and of considerable length, with a 

 deep and narrow notch on each side at base ; while in rotiindipennis 

 they are fully developed as slight flattened triangular projections, shorter 

 than broad, and with the base not notched. 



No description is extant of the ^ of P. unicolor, Thomas. The 

 following characters, from the description of the $ , will show that it is 

 distinct from obovatipennis : 



" Sides of pronotum parallel ; carinas equally distinct. Elytra half as 

 long as abdomen, oblong-ovate. Hind femora passing the abdomen 

 slightly. Colour, reddish brown throughout." 



In general appearance obovatipennis resembles somQVihdii Fez. manca, 

 Smith, but the $ of the former is mucli larger and more robust, with the 

 disk of pronotum flatter, the sides more divergent, and the vertex broader. 

 The tegmina are shorter, and with a much narrower base than thpse of 

 manca, while the two species differ materially in colour. 



Obovatipennis has been taken only in Vigo and Monroe counties. It 

 reaches maturity about September ist, and frequents, for the most part, 

 high, dry, open woods, especially those in which beech and oak trees 

 predominate. On the tops of the hills, in the coal district of Vigo Co., 

 where the soil is a clay, and the herbaceous vegetation somewhat limited, 

 it is the prevailing, and often only, representative of the family. In late 

 October, if the season is dry, it is often found in company with Chrys- 

 ochraon viridis and Triixalis brevicornis among the reeds and tall, rank 

 grasses near the border of marshes, and as late as November 22nd has 

 been noted enjoying the afternoon sunshine from a perch on the bottom 

 plank or rail of a fence. The ? 's are always much more numerous than 

 the (J's, the ratio being about 8 to i. Their larger, robust form 

 renders them more clumsy, and hence more readily caught by the hand, 

 the $ 's being active leapers, and requiring quick movement on the part 

 of the collector to effect their capture. 

 Pezotettix occiDENTALis, Bruner. (C E., XXIII., 8r.) 



This is the Pez. viola of my first paper. When that was prepared, I 

 considered P. viola and P. accident alls 2^^ synonyms, but having received 

 typical examples of the former from Prof McNeill, I find them to be 

 distinct, 



