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NOTES, CAPTURES, ETC. 165 
Bottom, Epping Forest, inthe middle of May. I secured about 
three dozen in a short time by beating the hawthorn.—Wws. 
Macuin; 22, Argyle Road, Carlton Square, E., June 20, 1883. 
Woop-Borinc CoLEorTeRA.—E. A. Schwarz, of Washington, 
makes the following observations in the ‘ American Naturalist’: 
—‘ There are many Coleoptera of various families which live in 
the galleries made by other species in the hard wood of trees. 
Thus the galleries of Mallodon and other large Cerambycidee 
form the home of many other species after the original owner has 
left them. If these inquilines are much smaller than the maker 
of the gallery, there is, of course, no difficulty in recognizing 
them as inquilines that did not make the gallery themselves. If, 
however, they are nearly of the same size as the original burrower, 
it is difficult to decide whether or not the galleries they inhabit 
have been made by them. ‘Thus Mr. Hichhoff, in his excellent 
work on European Scolytide, suspects that the genus Platypus 
uses the galleries made by other beetles. My own experience in 
the South, with the common Platypus compositus is as follows :— 
When found in the thick bark of pine stumps the larvee doubtless 
bore themselves, as there is no other beetle found in their com- 
pany which makes such smooth and straight galleries. If, how- 
ever, they occur in hard wood, such as oak, hickory, hackberry, 
&c., the case appears to be different, and seems to confirm 
Mr. Eichhoft’s statement, as I found them always associated with 
true boring insects, viz., Colydiwm lineola and Sosylus costatus, 
The galleries of these three species are undistinguishable, and it 
appears to me very probable that Platypus simply uses the old 
galleries made by the two Colydiid beetles just mentioned. The 
Histerid genus Teretriws is another instance of this sort where 
the inquiline can be readily mistaken for the maker of the 
gallery, but in this case the Z'eretrius 1s simply parasitic on 
Ptilinus and other boring insects. I would also call attention to 
the fact that Professor Riley discovered the larva of Hemirhipus 
fascicularis to be parasitic on Cyllene picta, in whose galleries it 
was living. As the two species are of about the same size, the 
Hemirhipus might be taken for a true wood-borer. Another 
observation bearing upon this subject I had recently occasion to 
make in a street in Washington, D. C. There was an old maple 
tree perforated on one side with numerous holes, made, I presume, 
by an Llaphidion or some other average-sized Cerambycid. ‘The 
