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INSECTS AFFECTING MAN AND ANIMALS 
Predatory beetles associated with blowflies breeding in carcasses. 
~-As a result of a study of the breeding habits of predatory beetles as— 
sociated with blowflies, including species of Saprinus, Creophilus, Ne—- 
crophorus, Cyanellus, Trox, Silpha, and Dermestes, R. A. Roberts, Uvalde, 
Tex., reports his efforts, which met with varying success, to propagate 
these beetles under confined conditions. In conclusion he says: "The 
beetles showing promise as predators * * * are Saprinus and Creophilus 
* * * for the following reasons: (a) These beetles are abundant at car— 
casses, (b) they are easily propagated, (c) they are long lived, (d) 
they are prolific, and (e) they attack the matured as well as early 
blowfly larvae." 
Sectional pole support for camera aids in photographing environ— 
ment.——In photographing sand-fly breeding places in marshes, W. E. Dove, 
of Savannah, Ga., writes that it has been difficult to avoid giving tn= 
due prominence to tall grass near the camera. "To overcome this," he says, 
"we constructed sections of a pole so that they can be assembled and 
set up in a desired locality. The camera is mounted on a tilting top. 
Guy ropes lead from metal pins in the pole to metal stakes in the marshes. 
The pins are used as a foothold for climbing the pole. When dismantled, 
the pole sections are conveniently transported in a small automobile." 
Longevity of the swamp mosquito.—-According to H. H. Stage, in 
charge of mosquito investigations at Portland, Oreg., "The last Aedes 
vexans Meig. was taken in the field on September 29, at Wahkeena Falls. 
The latest date of emergence at this location was June 20, which gives a 
life span under natural conditions of at least S81 days to the three 
females captured on that date. One of these remained alive in the lab-— 
oratory until October 28 and continued to lay eggs in small guanti- 
ties," 
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