\ol.XXviii] ENTOMOLOi.U'AL MOWS. 377 



(Dendroctonus) in the Pike's Peak region of Colorado is especially 

 noticeable. On the other hand, parasitic flies (Sarcophaga) attacking 

 grasshoppers are increasing in Montana. 



"The destructive result of the hot weather in Southern California 

 [June 14-17: 115-120 deg. F.] against citrus pests has been about 

 equivalent to a season's insecticide treatment." "The unusual amount 

 of rain in the spring" in northeastern Louisiana "gave rise to an un- 

 usually high density of malaria mosquitoes early in the season with a 

 consequent early appearance of active cases of malaria." This was 

 followed by "lack of rain and high temperatures operating on both 

 the larvae in the breeding places of these mosquitoes and the activity 

 of the adults. The reduction in the active cases of malaria is already 

 apparent." An "unprecedented number of fleas" (4 species) reported 

 from the vicinity of Dallas, Texas, is believed to have been "correlated 

 with the rather uniform distribution of rainfall during the spring 

 months and probably a high humidity." 



One of the largest flights of may-beetles (Lachnostcrna} experi- 

 enced in several years covered the entire State of New Jersey. 



Copies of all entomological literature, as letters, special bulletins, 

 circulars, press-notices, posters, etc., issued by State and Station ento- 

 mologists, State Councils of Defense, Boards of Health and other 

 bodies in connection with the present war emergency, are requested 

 by the Bureau of Entomology at Washington, in order that as complete 

 a file as possible may be preserved for reference use in its library. 



Entomological Literature. 



COMPILED BY E. T. CRESSON, JR., AND J. A. G. REHN. 



Under the above head it is intended to note papers received at the 

 Academy of Natural Sciences, of Philadelphia, pertaining to the En- 

 tomology of the Americas (North and South), including Arachnida and 

 Myriopoda. Articles irrelevant to American entomology will not be noted, 

 but contributions to anatomy, physiology and embryology of insects, how- 

 ever, whether relating to American or exotic species, will be recorded. 



The numbers in Heavy- Faced Type refer to the journals, as numbered 

 in the following list, in which the papers are published 



All continued papers, with few exceptions, are recorded only at their 

 first installments. 



The records of papers containing new species are all grouped at the 

 end of each Order of which they treat. Unless mentioned in the title, 

 the number of the new species occurring north of Mexico is given at 

 end of title, within brackets. 



For records of Economic Literature, see the Experiment Station Record, 

 Office of Experiment Stations, Washington. Also Review of Applied Kn- 

 tomology, Scries A, London. For records of papers on Medical Ento- 

 mology, see Review of Applied Entomology, Series B. 



3 The American Naturalist. 4 The Canadian Entomologist. 

 5 Psyche. 8 T! . omoloi/i' f's Monthly Magazine, London. 



11 Annals and IviaKaznu 1 of Natural History, London. 



