(50 THE REPORT OF THE No. 36 



mistake their " song " for a rattle-snake which is common in that locality. This 

 species often flies high up on the rocks and rests on the perpendicular face of the 

 cliff and is very hard to>:'apture, its colours harmonizing with the green and grey 

 of the rocks. I do not know where the}- deposit their eggs. 



Trimerotropis caeruleipes (Scudder). This grasshopper does not seem to be 

 at all common in the Okanagan Yalley, more especially in the southern half, 

 but is one of the commonest species at Salmon Arm and at more northerly points. 

 It was first taken in the adult form on July 20th at Westbank and a few were 

 collected at Fairview and Penticton during the latter part of August. The only 

 place where this species was seen in any numbers was at Salmon Arm on September 

 .28th. On this date is was seen in large numbers in the orchards and appeared 

 to be at its maximum abundance. They were observed to l)e pairing and a few 

 vt^ere egg-laying. They were found in company with Trimerotropis vinculata, 

 Circotettix suffusus, and Arpliki pseudonietana. The males of this species are much 

 smaller than the females and produce a soft clicking sound when in flight. Frosts 

 of thirteen and ten degrees on September 27th and 28th respectively, caused.no 

 visible decrease in the numbers of this species. 



Trimerotropis vinculata (Scudder). Adults were first taken at AVestljank 

 on July 20th, and from that date on were found in company with l^pharagemon 

 aeqimle all over the ranges at Fairview. A few adults were taken at Salmon Arm 

 on September 29th, and had, I think, completed their egg-laying. 



LOCUSTINAE. 



Five species of Locustinae were collected. All belong to the genus Melanoplus. 



MeJanoplus atlanis (Riley). This year there have been remarkably few of 

 any of the genus Melanoplus present in British Columbia in the localities where 

 they are usually common. In the southern Okanagan Valley there were very few 

 grasshoppers of this species present. The only place in B.C. to my knowledge, 

 where this species was common was at Celesta on the Shuswap Lake where an 

 outbreak of considerable severity occured. Both this species and Melanoplus femur- 

 ruhrum have been far more plentiful this year in the humid sections of the Province 

 than they have in the Dry Belt where they are usually most in evidence. They 

 began to hatch about the middle of June, thg first of them becoming adult in the 

 latter part of July. Nymphs of this species were still to be found in the beginning 

 of September. Eggs were being deposited during September. 



Melanoplus femur-ruhrnm (DeGeer). These grasshoppers have been fairly 

 numerous this year throughout the Province and I have seen more of this species 

 than I have of Melanoplus atlanis which is usually the more almndant species ol 

 the two in British Columbia. This grasshopper l^egan hatching about the middle 

 of June and the first adults were taken on July 20th at AVestbank. The hatching 

 period of these grasshoppers seems to be very' protracted, for nymphs were still 

 found on September 21st in considerable numbers at A'^ernon. This species was 

 responsible for the outbreak in the Lower Eraser Valley this year. Eggs were 

 being laid during the first week in September and doubtless continued until the 

 frost killed the adults. 



Melanoplus packardii (Scudder). This species was only taken on one or twc 

 occasions in the Okanagan Valley close to Fairview. It was first seen in a dry 

 gully on June 27th, on which date only a few were adult. On August 22nd this 

 gully was again visited and a considerable number of specimens caught and all 

 were adnlt. Oviposition began in the third week in August. An odd specimen 



