OF WASHINGTON. 321 



absent during the succeeding one, but will sometimes be found 

 again at a later period. In this way he says that the length of 

 time the corpse has been buried can be definitely ascertained 

 from the insects found infesting it. Mr. Marlatt doubted that 

 any kind of insect which once infested a corpse would leave it 

 for a certain length of time and then return. He also doubted 

 that data obtained in this way could be implicitly relied upon, 

 since the conditions are so seldom the same. 



In regard to the manner in which the insects gain access to 

 the corpse, Mr. Hubbard stated that in the case of the Diptera 

 the eggs were evidently deposited on the outside of the coffin or 

 casket before burial and the young larvae made their way through 

 any small opening. He did not believe it possible for the young 

 larva to make its way through the soil -after burial. Dr. Stiles 

 stated that he does not agree with the conclusions arrived at by 

 the author of the work in question, but thought that the field 

 was a very interesting one and desired to bring it to the attention 

 of entomologists. 



Mr. Coquillett presented for publication in the Proceedings 

 the following paper : 



A NEW DIPTEROUS GENUS RELATED TO GNORISTE. 

 By D. W. COQUILLETT. 



In a small collection of Diptera recently received from Prof. 

 T. D. A. Cockerell is a Mycetophilid having an extremely long 

 proboscis. The only described genus having this character so 

 far reported as occurring in our fauna is Gnoriste Meigen. But 

 the present form differs from the latter genus in having the palpi 

 attached to the proboscis near its base instead of near its apex, 

 and the fourth vein forks far beyond the forking of the fifth in 

 stead of almost opposite it. The new form will be easily recog 

 nized by the accompanying figure and description : 



Eugnoriste new genus. Head small, much narrower than the thorax; 

 antennae slightly longer than the thorax, filiform, pubescent, sixteen- 

 jointed ; proboscis rigid, filiform, directed downward and backward, longer 

 than the head and thorax taken together; palpi four-jointed, the first 

 joint very short, the second as long as the two following taken together; 

 three ocelli ; eyes deeply emarginate next the antennae. Coxae nearly as 

 long as height of thorax, legs destitute of strong bristles, spurs at tips of 



