PROCEEDINGS, 1921 29 



(10) 735d. Haemorrhagia diffinis race rubens Hy. Edw. (The 

 Bumble-bee Hawk Moth). This species is very common in certain 

 localities on Vancouver Island and occurs all through the Province as 

 far as the East Kootenays. It is very difficult to capture on the wing 

 as its flight is exceedingly rapid and vvhen once struck at and missed it 

 is gone for good. The best and easiest way to capture them is to stand 

 perfectly still, before a patch of blossom which they are known to fre- 

 quent, with ones net ready to strike, and as soon as one comes within 

 striking distance, to make a sweep at it, creating as little disturbance 

 as possible. One afternoon in early May several years ago I captured 

 over 20 in an hour and a half in a small area about 6 yards long by 2 

 yards in width. It feeds on snowberry and I have bred them from a 

 species of barberry. 



It may not be known to all of you that when these moths emerge 

 from their pupal state, their wings are covered with scales, which how- 

 ever are somewhat loosely attached. These scales become detached 

 after the first flight, thus rendering the wings transparent, with the 

 exception of a narrow border round the edges. 



In our 1906 Check List we have listed both thetis and palpalis, the 

 latter is now a synonym of the former. The record is wrong, however, 

 as rubens is the form that we get in British Columbia; thetis is a much 

 smaller species and occurs in Wyoming and Colorado. 



(11) 752 Prosperinus clarkiae Bdv. (Clark's Day-sphinx). This 

 is rather a small but pretty species, the fore wings are a pale olive green 

 with an oblique brownish median band and a triangular brownish patch 

 near the apex. The hind wings are orange yellow margined with black. 

 It is not a common species by any means. It emerges about the middle 

 of May and is found hovering over flowers in the bright sunshine. It 

 occurs on Vancouver Island and is recorded from Vernon. I also have 

 one specimen from Trail, but so far Mr. Cockle has not taken it at Kaslo. 



(12) 753a. Prosperinus flavofasciata race ulalume Strecker. This 

 species is rather local but it is not uncommon where it occurs. It is a 

 day-flier and like the preceding species is fond of hovering over flowers. 

 In a certain orchard near Cobble Hill, it is very common round the 

 cherry trees when they are in bloom. It is fairly common in late April 

 and early May in some parts of Vancouver. It is also taken at Kaslo 

 and I have it from Mission and Rossland. The larvae are reported to 

 have been found feeding on fireweed. 



(13) 761 Celerio gallii race intermedia Kirby. (The Bedstraw 

 Hawk-moth). So called as the larvae feed upon tl>e common bedstraw 

 Galium triflorum. This is the North American representative of gallii, 

 which is very common in Europe. 



Dr. Dyar in his Catalogue made intermedia a synonym of gallii, 

 but Rothschild and Jordan in their Revision of the Sphingidae have 

 restored the name of intermedia, which is applied to our North American 



