PROCEEDINGS, 1916. 23 



NOMOTETTIX (MORSE) 



This genera is represented by one species N. cristatus Scudder, which can easily be 

 recognized by the characters given in the key. The head with the vertex projects be- 

 yond the eyes; front border rounded. On the disk, between the back part of the eyes, 

 are two small tubercles. The pronotum is high and arched with the front margin pro- 

 jecting forward over the back of the head, rarely extending back beyond the tip of the 

 abdomen. The color varies from dark brown to nearly black, sometimes vel- 

 vety spots on the pronotum. The hind femora are very much thickened for leaping. 

 Usually found where vegetation is scarce. 



ACRYDIUM (GEOFF) 



Species of this genera are somewhat longer than the Nomotettix. The vertex of 

 the head projects beyond the eyes. The dorsum of the pronotum is rather flat. It pro- 

 jects as far, or beyond the tip of the abdomen. Wings well developed. 



Key to Species. 



A. Median carina distinct for entire length of pronotum. 



B. Body slender, pronotal process attennuate. Vertex with front angulate, 

 median carina not projecting granulatum. 



BB. Body more robust. Pronotal process shorter. Vertex with front 

 rounded, median carina projecting ornatum.. 



A. granulatum (Kirby) 



This species is readily distinguished from ornatum by its more slender appearance, 

 and by the pronotum extending further back beyond the tip of the abdomen. Prono- 

 tum and legs are finely granulated. Color varies from light grey to dark brown. 



Usually found in damp places. Common all through the summer. 



A. ornatum (Say.) 



This species varies in color and markings, but can easily be distinguished by the 

 characters given in the key. The body is very short; the pronotal process extends but 

 little beyond the tip of the abdomen. Very abundant all through the spring, summer 

 and fall. Found mostly along the banks of streams and boggy places. 



SUB-FAMILY ACRIDINAE. 



The members of this sub-family can easily be recognized by a distinct spine or 

 tubercle between the front pair of legs. The species vary in size and color, the prevail- 

 ing color, however, being a dull brown. The front wings are well developed, though in 

 one species are hardly as long as the abdomen. 



To this sub-family belong some of our most injurious forms, some of which are very 

 common in all parts of the province. In my collecting I have been able to obtain only 

 one genus, viz., Melanoplus. 



