1920 ENTOMOLOGICAL SOCIETY. 59 



Mestohregma sp. This is an extremely pretty grasshopper when alive ; pinned 

 specimens soon lose their colours. Adults of this species were first taken at Fairview 

 on June 27th. During July a few were seen at Westbank and an occasional adult 

 was taken in the neighborhood of Fairview up until the end of August. This 

 species was never found in any numbers, but one or two might be found in a day. 

 They were taken out on the dry bunch-grass flats and were very inactive, often 

 allowing themselves to be caught by hand. No notes were obtained as to their 

 egg-laying habits nor were they ever observed to produce any sound. 



Conozoa wallula (Scudder). This was a very common species in certain 

 localities and on certain types of soil. Adults were first observed in large numbers 

 at Westbank on July 20th on a piece of flat sandy ground running out into the 

 Okanagan Lake. This species was seen in many places in the Okanagan Valley, 

 but when observed was always on dry, hot, sandy spots, such as roadsides, waggon 

 tracks across the ranges, on pieces of sandy land in the bend of rivers, or along 

 lake shores. Where they occurred they were usually in large numbers. Although 

 they were all adult by the end of July I noticed no decrease in their numbers at 

 the end of August and I think that they would probably be present until killed 

 by frost. They were very inconspicuous on the ground and very difficult to catch 

 as they were very quick in leaving the ground. When disturbed they only flew 

 :i sho"t wav before alighting again. The sexes were pairing during the middle of 

 August. This species seemed to be particularly infested by the red mite Tromhl- 

 dium locustarum, and I saw some specimens whose under wings were so covered 

 by these mites that they were unable to fly or even to close their tegmina. There 

 were usually some Tachinids and Sarcophagids flying about among these swarms 

 of grasshoppers. The Sarcophagids were observed to dart at the grasshoppers, 

 while they were in flight, as if to place an egg or living larva upon the bodies 

 of the grasshoppers before they closed their wings on alighting. This same thing 

 was noticed in the case of Spharagemon aequale and Trimerotropis vinculata. 



Circotettix suffusus (Scudder), Adults of this species were first collected 

 at Westbank on July 20th where they were commonly seen along the roads. I do 

 not know when this species first appears but I do not think that those collected 

 on this date had been in the adult state long. I did not see many of these grass- 

 hoppers this summer in the Southern Okanagan Valley, This is one of the 

 dominant species at Salmon Arm during August and September and may be found 

 commonly in the orchards and along the roads. On September 29th I found large 

 numbers of them in the orchards in company with Trimerotropis caeruleipes. 

 They were depositing eggs in the hard ground around the apple trees and nearly 

 all were in good condition, so that in this locality at any rate, they are one of 

 the chief species present during September. This grasshopper is a strong flier 

 and hard to capture. When approached they leave the ground very rapidly, rising 

 to five or six feet in the air and then zigzag away making a very loud and sharp 

 clicking noise. 



Circotettix lohatus (Saussure). These grasshoppers were only taken in one 

 or two localities. They were found in considerable numbers on August 7th near 

 Fairview on a rock slide at the foot of a clifi'. The males produce a loud crackling 

 and snapping sound when on the wing. They have a regular " song " at mating 

 time ; dancing up and down in the air, producing five or six sharp clicks followed 

 by a shrill rattling sound, very similar to the noise made by a rattle-snake. As 

 these grasshoppers seem to occur almost entirely on rocky slopes at the base of 

 <'lifFs, which is a favorite haunt of the rattle-snake, I have often found that people 



