THE CANADIAN SPORTSMAN AND NATURAMS'l. 



!' 



them with iis tongue, thereby conducting the 

 egga into its stomach. Thia man, after giving 



hie lior.se wuicr from a pail, foolishly drank a 

 portion of it himself, therefore taking into his 

 stomach a number of Bot-fly eggs which 

 became detached from the horse's lip*. Of 

 course lie became sick and after suffering days 

 of pain, resorted to an over dose of whisky as 

 the only remedy at hand, when he vomited a 

 number of larva which were sent to me and 

 which I pronounced to be the Horse Bot-fly. 

 There are cases on record of man's death 

 caused from carelessness in drinking water 

 after his horse. Dr. Wright of Toronto has a 

 man's liver in spirits, which is full of larva of 

 ihe Horse Bot-fly. People cannot be too care- 

 ful in matters of this kind ; it should at least 

 be known that insects which can withstand 

 the temperature of a horse's stomach, may 

 also habituate themselves to live in the larva 

 state in the stomach of man ; therefore I say, 

 uo matter how clean the exterior skin of the 

 horse may appear, never drink water from the 

 same vessel from which, your horse drank. 

 The genus Cuterebra are those which seem of 

 interest to us at present. We are anxious to 

 procure further information regarding those 

 that are parasitic on the wild quadrupeds of 

 our forests — such as deer, bear, wolverine, 

 ground-hog, squirrels, hare and the wood- 

 mice. One species Tlypoderma tarandi, Linn, 

 is said to infest the reindeer. The genus 

 (Estrovvyia is thought to inhabit the bare. 

 Of the former genus, Dr. Fitch described a 

 species Cuterebra emasculator, Fitch, which 

 lives in the scrotum of the black squirrel, 

 which it is known to emasculate. C. buccata, 

 Fabr., inhabits the body of the striped squirrel ; 

 it generally attacks the animal in the region 

 of the kidneys. 



Butterflies belonging to the genus PieriS 

 (one of the species destroys cabbage in the 

 vicinity of Montreal) were not generally sup- 

 posed to feed on plants far removed from the 

 latter. In the last number of "Papilio," a 

 proficious magazine devoted to the si inly of 



Butterflies and Moths, edited by M 



l Idwards of New York, J 



paper from the pen ol my old 



K. II. Stretch of Ban I 



appears thai Dr. IF 



Qenshaw of the Natural lli-i : -. s 



Boston, Mass., and Mr. Stretch, tl 



mologists, accompanied the r. S. N'.^rtli 



Transcontinental Survey this summer. 



Spokane Falls, Washington Territory, in July, 



at an altitude of 1900 feel above the Bea, they 



discovered and partially studied the hat 



Pieris monapia, Fold., var. tvfftua, - 

 During the latter month " the air was alive 

 with butterflies flitting round the pint - 

 countless numbers, and glistening against the 



dark green of the young timber like the most 

 delicate snowllakes. Some idea <>\ the im- 

 mense numbers of the insect may 1 • 

 from the fact that in the infected district, 

 on every little pine, though not more than 

 two feet high, each terminal branch i 

 from one to twelve larvae or pupa- could be 

 counted, and every weed could show its quota 

 of pupse." The trees which this butterfly 

 destroys in Washington Territory are the 

 Balsam Fir {Abies balsamii), the Tamarac 

 (Pinus contorta), and the Yellow Fine (Pintu 

 ponderosa). "The area actually visited, 

 where serious damage has already been com- 

 mitted, extends about twentv-live miles north 

 and south, with an unknown width, and in 

 this region all the Yellow Pines have been 

 nearly or totally stripped of their foliag 

 well as many of the smaller species of Cmii- 

 feras. The lirsl impression was that tire had 

 scorched the tops of the trees, so brown and 

 withered did they look in their clothing of 

 dark, blackish moss; and before the cause 



of this effect had been discovered, it wa< only 



by persistently remembering that all the 

 large fir trees were green that the idea could 

 be kept out of the mind." Now this insect 

 occurs in California and Vancouver's Island, 

 and "is evidently of very wide distribution, 

 latitude in the north taking the place ol alti- 

 tude in the south, and consequently the same 

 phenomena which we are here called to note 

 may occur in localities where the timber i-^ 

 both denser and more valuable." It will lea 

 poor lookout lor our forest pines it this 

 butterfly visits the Dominion, and I cannot 

 see that its further northern course can be 

 prevented; although a delicate butterfly, it 

 lias better facilities of coining here than the 

 Colorado beetle had. Yet it may be presumed 



