1904 ENTOMOLOGICAL SOCIETY. 33 



of dealing with infested flour. These Mites are the common Tyroglyphus 

 longioT. I have recommended the thorough cleaning of the flour b'n as 

 one of the first essentials. If the owner does not care to throw out his flour 

 or use it for other purposes, he may fumigate it with carbon bisulphide or 

 hydro-cyanic acid_ gas. After thorough ventilation there is no danger 

 whatever from poisoning due to the use of either of these chemicals. 



Some Box Flies of our Smaller Mammals. 



Two interesting cases of infestation by bot-fly larvae came und6r my no- 

 tice this summer. The first was that of a kitten which had a large growth on 

 the neck. Upon opening the growth a large bot maggot was taken, which 

 measured more than an inch in length and more than half an inch in diam- 

 eter. The second case occurred on a rabbit which had a tumor-like growth 

 on the neck. 



There seems little doubt that the larva taken from the rabbit is Cutere- 

 hra cuniculi, Clark, (Rabbit Bot-Fly), and as the form taken from the kitten's 

 neck is very similar, it is probable that it is the same or a very closely allied 

 species. 



The Rabbit Bot-Fly (adult) is quite large, and resembles to some extent 

 u bumble-bee. Its head is black, the upper surface of its thorax is yellowish 

 and hairy, and its abdomen blue-black, with the exception of the first seg- 

 ment which is covered with yellow hair. 



The larva, as will be seen by an examination of the specimen is a large, 

 black spiny maggot. It has two small hooks at the anterior end by means 

 of which it can cling to linings. It is sometimes stated that bots which live 

 in tumors have no oral hooks but only fleshy tubercles. The rows of spines 

 DO doubt serve in locomotion. 



All the larvae of bot-flies descend to the ground, where they burrow to 

 some extent. There they transform to pupae within a puparium, and remain 

 us such until spring, when the adult flies emerge. The adulia axe very con- 

 spicuous insects, and are fond of sunshine. 



Osborne states that the egg and early larval stages of this bot-fly are un- 

 known. Much investigation has been done with regard to the bot-flies, 

 which are parasitic on our large domestic animals, such as sheep, cow, and 

 horse, but very few studies of importance have been carried on with the bots 

 which parasitize our common wild animals. Every observation is of value, 

 hence for this reason I have presented these notes. 



RECENT EXPERIMENTS AGAINST THE SAN JOSE SCALE. 

 By Prof. W. Lochhead, Ontario Agricultural College, Guelph. 



In cxlC last report of the Entomological Society I called attention to the 

 excellent results which were being obtained by the use of the lime-sulphur 

 wash. The great objection against the general adoption of this wash was the 

 difficulty of preparation and of application. It was noted, however, by many 

 of the fruit-growers who prepared this wash in large quantities that it was 

 not so difficult to prepare as was anticipated. 



Occasional experiments had been conducted last year to determine if it 

 were possible to prepare the lime-sulphur wash without the prolonged bpil- 



3 EN. 



