Ct. S. GtRAHAM-SmITH 
477 
Traps baited with decomposing animal matter. 
IV. A net trap, baited weekly with the bodies of guinea-pigs and other 
small animals, was placed in an open situation, about 50 ft. from trap I, 
on the south side of a paling running east and west, to ascertain the 
species and numbers of flies visiting decaying animal matter in the open 
(Plate XXV, E). 
V. A “tin” trap baited with bodies of small animals was placed 
in a very shady situation, to ascertain the species attracted to animal 
matter in a dark receptacle in the shade (Plate XXV, A, and Plate 
XXVI, fig. 2). 
VI. A “tin” trap baited with bodies of small animals was placed 
in an open sunny situation, to ascertain the species willing to pass into 
a dark receptacle in the open (Plate XXV, D, and Plate XXVI, fig. 1). 
Trap baited with fruit. 
VII. A net trap, baited with fruit of various kinds, was placed in 
a similar situation to trap IV, but about 60 feet distant from it, to 
show the species visiting over-ripe fruit. 
Observations by means of traps I-VI were commenced on April 11, 
but trap VII was not baited till Aug. 2. The balloon traps were brought 
in every evening, and the flies killed by chloroform, examined and 
recorded. 
In order to gain further information on the habits and prevalence 
both of species which entered the traps and of those which are common, 
but are not attracted to the baits used, flies of various kinds were 
caught on flowers, palings, etc., for at least an hour daily during the 
warmest time of the day. Also during the fruit season flies which 
visited plums and other fruit, either still hanging on the trees or lying 
on the ground, were collected on several occasions in orchards. 
Common species of flies found out-of-doors. 
The larger flies, which frequent gardens and are attracted to human 
excrement and decaying animal matter, belong to a limited number of 
species, but most of them possess no popular names, and are only 
described in entomological journals. In order to help those who may 
be interested in this subject, photographs of living specimens of most 
of the commoner species are reproduced life-size in Plate XXVII. 
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