154 Cincinnati Soctety of Natural History. 
A species of Atenius which I have taken here I think new and 
propose for it the name A. rugiceps, and describe it as follows : 
Color, brown. ‘The thorax darker and more shining than ely- 
tra. Entire front of head rugose; posterior part with a shallow 
punctured transverse groove. Clypeus emarginate in front. 
Thorax with sparse, scattered, very coarse punctures and a shal- 
Atenius rugiceps, Ns Sp. 
low coarsely punctured groove, extending from base to middle. 
Front and hind thoracic angles prominent, sides arcuate and with 
a narrow margin extending across base and along sides to front 
angles. Elytra slightly narrower than thorax, sides straight, tips 
conjointly rounded. Striz deep, impunctured, with sides of 
strie feebly crenate. Abdomen with very minute punctures. 
Segments very prominent and rounded, sutures between them 
crenate. Mesosternum carinate between coxe. Length 3-5 mm. 
One specimen. Cincinnati, O. 
PLEUROPHORUS. 
Pleurophorus ventralis Horn. 
I took specimens of this species here in 1880, and sent them to 
Dr. Horn, who named it “Atentus, n. sp.’ In Monograph of 
the Aphodiini, Trans. 1887, page 92, he describes it under the 
above name. I have what I think to be male and female of this 
remarkable species. 
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