170 THE CANADIAN ENTOMOLOGIST. 



6. Chlbealtis abdominaiis Thomas. 



Fort William, Aug. 26, 27, 1907 ; both macropterous and brachypter- 

 ous forms fairly common, especially upon the plateau and summit of Mt. 

 McKay. Also observed on the grassy plain on the west side of the 

 Kaministiquia River. It was most numerous on the summit of the 

 mountain, where it frequented the small openings in the scrubby woods. 

 It also occurred at Nipigon. 



The specimens, like those from the Severn River, Ont., are of larger 

 si/.e than those from the Prairie Provinces and Banff, Alberta. 



Measurements: Length of body, J 10 mm., 9 23-27 mm.; head 

 + pronotum, 3* 6.5-7 mm, ° S-S.6 mm.; tegmen, o* il mm - 

 (brach.), 18-19 mm. (macr.), $ 10 mm. (brach.), 21-22 mm. (macr.) ; 

 hind femur, <? 125-13 mm., ? 13-16 mm. 



7. Chlbealtii ionspersa Harris. 



Moderately common at Fort William and Nipigon, but not observed 

 at Temagami. Only a few specimens were collected, and no accurate 

 data can be given as to the relative proportion of macropterous to 

 brachypterous individuals. The latter certainly predominated at Nipigon, 

 where the species was observed in some numbers on logs and rubbish 

 near the edge of a wood in a bushy pasture. 



Wing-length is quite variable in the brachypterous type, and it is not 

 improbable that a more or less continuous series of intergrades may be 

 found connecting the latter with the macropterous type. In a typical 

 pair of this form the tegmina of the male measure 17.5 mm , reaching 3 

 mm. beyond the tips of the hind femora. Those of the female are 19.75 

 mm. long, likewise extending 3 mm. beyond the hind femora. The wings 

 of such specimens are fully developed and ample, while in the brachypter- 

 ous type, even in a male with tegmina reaching within 2 mm. of the tips 

 of the hind femora, the wings are quite abortive, being in the latter example 

 6 mm. shorter than the tegmina. 



S. Stenobotluus curtipennis Harris. 



This species appeared in large numbers in open grassy places at Ft. 

 William and Nipigon, but was not observed at Temagami. It exhibited 

 its usual great variability in wing-length and colour-pattern. 



9. Mecostethus lineatus Scudder. 



Nipigon, Aug. 30, 1907, 1 <J , 2 $ 9 i Temagami, marsh on Obabika 

 Creek, Sept. 11, 190S, 1 3 • A few others were observed here and at one 

 or two similar places, but could not be captured. 



