766 EXPERIMENT STATION EECOED. [Vol. 3S 



A new pyralid from California, H. G. Dyar (Insecutor Inscitice Menstruus 

 5 (1917), No. 1-9, p. 132). 



Brabantia rhizoleuca, redescribed, H. G. Dyar (^Insecutor Inscitice Men- 

 struus, 5 {1911), No. 10-12, p. 169). 



The genus Culex in the United States, H. G. Dyar and F. Knab {Insccnior 

 Inscitia- Menstruus, 5 {1911), No. 10-12, pp. 170-183).— The author presents 

 notes on 17 species of Culex, including two new species ; and on three additional 

 species belonging to other genera. A table for the separation of subgenera ol 

 Culex by the male genitalia and a table for the separation of species of Culex 

 by coloration are included. 



The mosquitoes of the Pacific Northwest, H. G. Dyar {Insecutor Inscitiw 

 Menstruus, 5 {1917), No. 7-9, pp. 97-102, pi. 1). 



The larva of Aedes idahoensis, H. G. Dyar {Insecutor Inscitiw Menstruus, 

 5 {1917). No. 10-12, pp. 187, 188). 



A second note on the species of Culex of the Bahamas, H. G. Dyar {In- 

 secutor Inscitiw Menstruus, 5 (1917), No. 10-12, pp. 183-187). — This second 

 note (E. S. R., 34, p. 553) gives a list of mosquitoes of the Bahamas collected 

 in 1903 by T. H. Coffin,^ together with the corrected nomenclature as supplied 

 in the monograph of Howai'd, Dyar, and Knab (E. S. R., 37, p. 762). A descrip- 

 tion of one new species and records of two additional forms are included. 



Dytiscus as a destroyer of mosquito larvae, F. E. Chiuester {Ent. News, 

 28 {1917), No. 10, p. 454).— The author finds that while dytiscid larvte may bei 

 of considerable importance in killing mosquito larvre when the latter are present 

 in great numbers, complete extermination by them where the mosquito larvie are 

 widely distributed is not probable. 



New American mosquitoes, H. G. Dyar and F. Knab {Insecutor Inscitice 

 Menstruus, 5 {1917), No. 10-12, pp. 165-169). — Four species of mosquitoes are 

 here described as new. j 



Notes on Aedes curriei, H. G. Dyar and F. Knab {Insecutor Inscitice Men-] 

 struus, 5 {1917), No. 7-9, pp. 122-125). j 



Notes on Aedes at Lake Pend d'Oreille, Idaho, H. G. Dyar {Insecutor In-\ 

 scitice Menstruus, 5 {1917), No. 7-9, pp. 102-104). 



Notes on the Aedes of Montana, H. G. Dyab (Insecutor Inscitice Menstruus, 

 5 (1917), No. 7-9, pp. 104-121). 



A new Aedes from the Rocky Mountain region, H. G. Dyar (Insecutor 

 Inscitice Menstruus, 5 (1917), No. 7-9, pp. 127. 128). 



A note on the mode of existence of flies during winter, R. P. McDonnell 

 and T. Eastwood (Jour. Roy. Army Med. Corps, 29 (1917), No. 1, pp. 98-100). — 

 The continued occurrence of adult flies in houses, hutments, and elsewhere in 

 France following a few days of sunny weather, notwithstanding the extreme cold 

 experienced in the latter part of February and early part of March, led thd 

 authors to conduct the investigations here reported. 



No hibernating' flies could be found, but examinations of manure heaps indi- 

 cated that eggs deposited in late autumn and covered over or otherwise buried 

 in the heap may hatch as a result of the warmth in the depths of the manure. 

 Such larvae continue to feed and eventually pupate, in which stage they may 

 remain until spring or appear as adult flies hatched out by a few warm days, 

 the heat of which has penetrated the superimposed layers of manure, thus ac- 

 counting for the fact that adult flies are frequently encountered in wintertime. 

 The finding of living fly larvae and pupse in such numbers in manure heaps is 

 considered remarkable on account of the extreme cold during the late winter, 

 when from 18 to 20° of frost were experienced for many days. 



iTlie Bahama Islands, edited by G. B. Shattuck (New York: The Macmillan Co., 1905, 

 pp. 275-2S9). 



