SUBFAMILY I. TETUIGIX.E. 165 



of numerous intermediate connecting forms. T. morsel Hancock 

 (1899, 280) is also a synonym, as noted by its author (1900, 58). 



GG. ACRYDIUM BRUNNERI (Bolivar), 1887, 26G. Brunner's Grouse Locust. 



Body broad, granulate; fuscous or dark brownish-yellow, often with 

 two black spots on pronotum. Vertex twice as wide as one of the eyes, 

 strongly advanced in front of them, its front margin obtuse-angulate; 

 sides broadly emarginate opposite the middle of eyes, the vertex, there- 

 fore, broader in front of the emargination. Pronotum with front margin 

 truncate, nearly reaching hind border of eyes; posterior process acute, 

 scarcely reaching apex of hind femora (short form) or distinctly surpass- 

 ing them in the long form, caudata Hancock (1906, 59) ; median carina 

 distinct but low. Tegmina elongate-oval, their tips rounded; wings equall- 

 ing or slightly surpassing the apex of pronotum. Length of body, short 

 form, $, 9 10.3, 9, 11.414.5; of pronotum, $, 9.3, 9, 10.5 12; of hind 

 femora, $, 5 6, 9, G 6.6 mm. Long form, length of body, 15.5; of pro- 

 notum, 13.8; of hind femora, 6.2 mm. 



Tsle Royale and Porcupine Mts., Mich. (Hubbcll) ; Kaslo, B. C. 

 (Cdinlcll). Known only from Canada, Michigan and the North- 

 western United States. Bolivar's types were from Hudson Bay. 

 E. M. Walker (1909, 174) has recorded it from Temaganii Falls 

 and Algonquin Park, Ontario, the single specimen from the for- 

 mer locality being a macropterous male, having the pronotal pro- 

 cess extending 4 mm. and the wings 4.7 mm. beyond the tips of 

 hind femora. It was found Sept. 2 in a small opening on a por- 

 tage through a forest of mixed white pine, spruce, balsam, canoe 

 birch, etc. The pair at hand from Michigan seem to be inter- 

 mediate between the brachypterous and macropterous forms, the 

 pronotum in both slightly surpassing the hind femora, in the male 

 by about 2 mm. The specimens from the Hancock and U. S. Na- 

 tional Museum collections were taken by Caudell at Kaslo, B. 0., 

 July 2 Aug. 5, and are all brachypterous. Hancock (1902, 76) 

 records it from Oregon, Green River, Wyoming and Tennessee 

 Pass, Colorado. Tcttix tcntatus Morse (1899, 200) is a synonym. 



67. ACRYDIUM ORNATUM Say, 1824, 10. Ornate Grouse Locust. 



Size medium, form slender. Color extremely variable, usually dark 

 grayish, sometimes rusty brown or fuscous; often ornamented with two 

 or four irregular velvety brown spots on dorsal surface of pronotum, more 

 rarely a large whitish spot in front of these; hind femora often with one 

 or two white blotches on the outer face (Fig. 59.) Surface of pronotum 

 and legs everywhere finely granulate; posterior half of pronotum usually 

 rugose with numerous short, oblique wrinkles or ridges. Vertex as de- 

 scribed in key, its front border distinctly projecting in front of eyes. 

 Pronotum variable in length, in the long form less prolonged backward 



