164 ENTOMOLOGICAL SOCIETY 



Professor Riley laid before the Society an interesting card, 

 which he had recently received from Mr. McLachlan, referring 

 to the Blepharocerid larvae mentioned at a previous meeting 

 of the Society. Mr. McLachlan fully confirmed Professor 

 Riley's reference of the larvae in question. 



Mr. Townsend read a paper on a " Remarkable New Hip- 

 poboscid," received from Dr. Alfredo Duges, Guanajuato, 

 Mexico, which had been taken on a bat. It was described as 

 Trichobius n. g. dugesii n. sp.* 



Mr. Townsend also presented a paper on a " Muscid bred 

 from Swine Dung," which he described in its larval and imago 

 states as Cleigastra suisterci n. sp.f This case of breeding had 

 shown a larval hibernation, and Mr. Townsend expressed the 

 belief that in more northern latitudes most coprophagous 

 Diptera {Hcematobia, Lucilia, etc.) winter equally as well as 

 larvae or pupae and only exceptionally as perfect flies. 



In the discussion Dr. Fox mentioned a curious instance of 

 the hibernation of the house-fly in numbers about wasps. 



Mr. Banks stated that he had found mosquitoes and gnats 

 under bark in mid-winter in New York. 



Mr. Schwarz said that winter collecting had not been much 

 practiced, and a failure to find various flies during this season 

 is simply because no careful search by Dipterists has been 

 made. 



Professor Riley mentioned that by means of the modern 

 sleeping car the house-fly, even should it be destroyed by a 

 severe winter in the North, would be introduced again in 

 a very short time from the southern States. Professor Riley 

 stated also that he had formerly done considerable early 

 spring collecting and had found a large number of puparia in 

 moist and sheltered situations, and hence it is known that 

 many flies do hibernate in the puparium. He believed also 

 that the larvae of many species could be found during winter, 

 and that these are hardy and can stand a considerable degree 

 of cold. In reference to the house-fly he said that he had 

 found the puparia in great numbers at his residence (Sun- 



* See Canadian Entomologist, Vol. XXIII. 

 fSee Canadian Entomologist, Vol. XXIII. 



