28 Proceedings, 1922 



The hind tibiae of all the specimens seen were yellow or yellowish brown 

 and not red as generally recorded for this species. 



Locality Records. Vernon, 1897 (E. M. Walker). Vernon, Kamloops, 

 Big Bar, Williams Lake, Chilcotin, Alkali Lake, 1920-21 (E. R. Buckell). 



Trimerotropis citrina Seudder, 1876. The Citrus-winged Locust. 



Scudder, Samuel PL Bull. U. S. Surv. Territ. IL p. 265 (1876). 



Locality records. Vernon, 1905 (E. P. Venables). Vernon, 1906 

 (J. Fletcher). 



Trimerotropis longicornis E. M. Walker, 1902. 



Walker, E. M. Can. Ent. Vol. 34. No. 1. p. 4. (1902). 



This species was described by Dr. E. M. Walker from a male taken 

 at Vernon. 



Locality records. Vernon, 1897 (E. M. Walker). 



Trimerotropis vinculata Scudder, 1876. 



Scudder, Samuel li. Proc. Bost. Soc. Nat. Hist. XVIIL p. 270 (1876). 



This large species is a common insect in certain sections of the 

 Province where warm, sandy areas are to be found. It is usually found 

 in colonies frequenting, in many cases, only a small portion of land. 

 These locations are usually well sheltered, warm, dry spots, devoid of any 

 thick vegetation. The males fly with a quick zig-zag flight, keeping close 

 to the ground ; at each turn of the flying insect a soft squeaking sound is 

 produced. The males are markedly smaller than the females. 



Locality records. Victoria, 1888 (Rev. 6. W. Taylor). Revelstoke, 

 Vernon, Agassiz, 1897 (E. M. Walker). Ashcroft, 1905 (Rev. W. M. 

 Roger). Savona, Greenwood, Kamloops, 1906 (W. J. Alexander). Fair- 

 view, Penticton, Westbank, Vernon, Walhachin, Kamloops, Salmon Arm, 

 1919; Chilcotin, Williams Lake, 1920-21 (E. R. Buckell). 



Subfamily IV. ACRIDINAE 

 (The Spine-breasted Locusts) 



The species of this subfamily are readily separated from those of 

 the three preceding subfamilies by the presence of a prominent spine 

 or tubercle on the prosternum, between the front pair of legs. There is 

 considerable variation in size and coloration among the members of this 

 subfamily. The head is smaller and less swollen than in the Tryxalinae 

 and Oedipodinae, and the pronutum is free from tubercles or distinct 

 wrinkles. Tegmina usually well developed, but in some species very 

 short, and in a few, wholly wanting. Inner wings in all the British 

 Columbia species transparent and without the black band and bright 

 colors found in the Oedipodinae, and all pass the winter in the egg stage. 

 All are silent in flight. Some of our most injurious species belong to this 

 subfamily. 



