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460 ENTOMOLOGICAL NEWS. [Dec., ’08 
as if scenting out its next day’s habitat. Its goal is a small 
rotten or semi-decadent root of oak. With its fore-tibiae it 
digs a half-inch perpendicular shaft to a depth of from four 
to nine inches and in its work it is not bradycinetus, slow-mov- 
ing, but very rapid. The excavated soil is pushed to the sur- 
face where it forms a mound two inches in median depth and 
four inches in diameter. This mound is like a pile of broken 
encrinite stems or “ropes of sand.” When a pair are at work 
together the shaft is (as in illustration) packed with soil at 
the top to a depth of an inch. Usually when a male is work- 
ing alone the shaft is open to the surface as if awaiting a 
female and reciprocally this is often so when the female is 
alone. I have never found two of the same sex under the 
same mound. The season for working is here from early 
June to late August, but from a hundred diggings I have seen 
no sign of a nest nor have I found even one egg. Moreover, 
I have examined many females freshly killed and have only 
one mass which I take to be an egg. It is white, globular and 
one-sixteenth inch in diameter. 
I have not seen any species of Bradycinetus except fer- 
rugineus. I have not seen any species of Bolboceras except 
lazarus. Yet I feel sure that these two species should be 
placed in the same genus and the generic name be Bolboceras 
as the antennae of ferrugineus are as truly bulb-shaped as 
those of Jazarus and they are not Bradycinetus or slow-moving. 
The two species are more nearly alike except as to size than 
splendens and antaeus the two species of Strategus which oc- 
cur here. Moreover, Bolboceras lazarus builds a mound and 
shaft precisely like ferrugineus except that they are propor- 
tionately smaller, the mound two inches in diameter of stems 
or ropes of soil and the shaft a quarter inch. 
B. lazarus is reported to me as: Common in both Hemi- 
spheres; a scavenger; nothing known of habits except that it 
has been found under decadent leaves. My illustration will 
disclose what little I have learned of this species. It may 
guide observers in other localities to a larger knowledge. 
Though it must propagate in decadent matter it cannot truly 
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