Dury: Coleoptera of Cincinnati. | 109 
hundreds. Bull, Brooklyn Ent. Soc., 1883, p. 77, says of this 
species: “winged, but does not fly.” It does fly nevertheless. 
They occur here from June to October 2. 
C. marginipennis was never observed here until May 17, 1899, 
when about 25 were taken near Batavia Junction, on a sand bar 
of the Little Miami river. 
C. cuprascens occurs on the sand bars of the Ohio river in vast 
numbers. C. untpunctata and C. sexguttata live in the woods. 
C. generosa and C. formosa occur in sand pits. C. punctulata 
occurs everywhere. Most of the others are found along sandy 
flats and banks of streams. ‘They are very active, and a good net 
is required to effect their capture. For a Monograph of Cincin- 
delidze see Bulletin Brooklyn Entomological Soc., Nov., 1883, and 
Revision of the Cicindelidze of Boreal America, by Chas. W. Leng, 
Trans. xxviil, 1902, p. 93. This exhaustive and complete paper 
just received. Every student should have a copy. 
CARABID/A. 
“Rapacious Ground Beetles.” 
OMOPHRON. 
O. robustum Horn. QO. tessellatum Say. 
©. americanum Dej. 
The sandy shores of Mill Creek was the home of these curious 
little bettles; hundreds could be secured by throwing water over 
the sloping banks, when Omophron, with many other small beetles, 
would emerge and run up the banks, some of the Carabidz and 
Heteroceridz instantly taking flight. Omophron however do not 
fly and were easily captured. On July 10, 1878, I took 365, 
divided as follows, 180 O. tessellatum, 147 O. robustum, and 38 
O. americanum. Then, Mill Creek was clean, with sandy banks 
and pebbly bottom. Now it has become a vile open sewer, the 
sand is saturated with sewage, which decays and gives off deadly 
gases, destroying all fish and insect life. For synoptic table of 
Omophron see Bull, Brooklyn Ent. Soc., 1878, p. 71. 
CYCHRUS. 
C. stenostomus Web. C. elevatus var. heros Harr. 
C. lecontei Dej. C. andrewsii Bland. 
C. canadensis Chd. 
All Cychrus have become rare here. I have not seen C. an- 
drewsi or C. heros for years. C. heros, when living is one of 
the most beautiful of the genus, its rich, purple color and grace- 
ful form renders it very conspicuous. We trapped many C. heros 
by placing flat stones along the edge of woods, finding the beetles 
concealed beneath. 
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