:.(i THE IJErOKT OF THE No. 36 



although some were seen on the open buneh-grass phiins. They were now fully 

 active and the males could be heard stridulating while at rest upon the ground. 

 When disturbed they would hop away but would not readily take wing. They are 

 silent when in flight. On May 19th this species was found to be egg-laying and 

 from the middle of May to the middle of June oviposition was at its height. From 

 this date on, however, they decreased rapidly in numl)ers and by the end of June 

 no specimens could be found. I do not know^ when these eggs hatch, and all that 

 I am able to say about their further life history is that up to September 1st, when 

 my observations ended, no specimens of this species were taken. I think, however, 

 that they would soon have appeared as adults again as another species {Ilippiscus 

 neglectus) with a similar life history was just appearing again on August 28th. 



Ageneotettix scudderi (Bruner). This species was first taken on July 20th 

 at Westbank, and on July 23rd they were found to be fairly common on the dry 

 range land around Fairview. They w^erc very similar in habits and distribution 

 to Aulocara eUiotti and seemed to take their place, for as Aulocara elliotti decreased 

 Ageneotettix scudderi increased. Both these species when at their height were the 

 most abundant grasshoppers present on the ranges. Although a small species they 

 were easily seen on the ground on account of their white antennae and bright red 

 hind tibiae. They are an active species with great jumping powers. Toward the 

 end of August they began to decrease and were not so frequently taken, and I think 

 that they had deposited their eggs by this time. 



Aulocara elliotti (Thomas). This species at the end of June was the most 

 plentiful grasshopper on the dry range €Ountr}- of the Southern Okanagan Valley. 

 1 do not know when this species first appears as adults but I should judge that 

 it would be during the second week in June. By the middle of July adults were 

 very plentiful and were evenly distributed over the range country south of Pen- 

 ticton. It Avas seen egg-laying in the third week in July from which date it 

 decreased in numbers, its place being taken Ijy a very similar but smaller grass- 

 hopper Ageneotettix scudderi. Aulocara elliotti is a powerful jumper but does not 

 make much use of its wings. A few adults could still be found up to the end of 

 August. The females are very much larger than the males and varied considerably 

 in coloration, some having the white markings on the pronotum very distinct, while 

 in others these markings were hardly visible. The males appeared to be far more 

 numerous than the females and Avere very active, running on the ground with 

 considerable speed. On several occasions from three to five males were observed 

 following a female. In each case the female was hopping while the males were 

 running rapidly behind. 



Choi'thippus curtipennis (Harris). Adults of these grasshoppers were col- 

 lected in considerable numbers on September 1st in a damp meadow at Penticton 

 where the grass was long and green. The males could be heard stridulating. I 

 do not know when this species first appears as adult. 



Oedipodixae. 



In the Oedipodinae fifteen species were collected Ijelonging to ten genera. 



Arphia pseudonietana (Thomas). The first adults of these grasshoppers were 

 seen on July 18th at Penticton. It has })ractically the same distribution in the 

 Okanagan Valley as Dissosteira Carolina and appears at about the same date. It 

 is rather more common and more evenly distributed over all types of land than is 

 D. Carolina, which remains together in small flocks on certain dry hill sides, rail- 

 road tracks, etc. The disk of the wing in A. p^eudoniefana is dark red. The 



