286 ENTOMOLOGICAL NEWS. [June, 'lO 



guay), 89, xxix, 242. Mocsary, A. Chrysididae Klugianae, 49, vii, 

 398. Morley, C. A description of the superior wing of the Hy- 

 menoptera, with a view of giving a simpler and more certain no- 

 menclature to the Alary System of Jurine, 36, 1909, 439. Popovici- 

 Baznosano, A. La mue des larves de "Megatoma undulata," 13, 

 Ixviii, 628. Le coeur et la fonction circulatoire chez Megachile 

 bombycina, 22, xxxv, 628. Rohrwer, S. A. Notes on Tenthreidi- 

 noidea, with descriptions of new species, 4, xlii, 172 (*). Schmidt, 

 H. Beitrag zur biologic der Steinobst-Blattwespe (Lyda nemo- 

 ralis), 92, vi, 68. Schrottky, C. Himenopteros de Catamarca, 238, 

 Ixviii, 233 (). Sigmund, F. Die anatomic der Kuchenschabe, 218, 

 iv, 15. Strand, E. Beitrage zur kenntnis der Hymenopterenfauna 

 von Paraguay, Crabronidae, 89, xxix, 125. Turner, R. E. On the 

 Thynnidae and Scoliidae collected in Paraguay, with descriptions 

 of other So. American species, 89> xxix, 179. 



REVIEW. 



THE FUNGUS GNATS OF NORTH AMERICA. Part i. Bulletin No. 172 

 Maine Agricultural College Experiment Station. The Myce- 

 tophilidae of North America. By O. A. Johannsen. 

 This is an important paper on a group of Diptera that have been little 

 studied. These insects have an economic bearing and in addition to the 

 anatomy, the habits and economic relations are given. It would have 

 been of value to the workers of the future had the author mentioned 

 where the types of his new species are deposited. 



FISHES IN THEIR RELATION TO THE MOSQUITO PROBLEM. By William P. 



Seal. From the Bulletin of the Bureau of Fisheries, Vol. 



XXVIII, 1908. Washington, D. C. Document No. 683, April, 



1910. 



The author says "Some phases of the mosquito problem are extremely 

 simple and easy of solution, but there are others that have not as yet 

 attracted much attention and that, in the opinion of the writer, will 

 not be so easily solved. The class of mosquitoes represented by the 

 rain-barrel wigglers constitutes, with the salt-marsh species, the most 

 of the mosquitoes, and the most pestiverous of them as annoyances. 

 The problem of dealing with these is one of simple engineering, filling 

 and draining, with the oil barrel as an auxiliary. But the Anopheles 

 mosquito is altogether in another class and \\-ill require a very different 

 and more complex sort of treatment. It is in fact, to a great extent 

 a separate problem." 



Mr. Seal is an authority on matters <>t" this kind and he has had a 

 l:ir<j;e experience and has presented a thoughtful and suggestive paper. 



