New Species and Additions to Cincinnati Coleoptera. 65 



Family Staphylinidae 



HOPLANDRIA ACUDENTATA, Sp. nOV. 



Color, brown with pale markings. Legs and four basal 

 joints of antennae paler. Body above very shiny. Head, pro- 

 notum and elytra finely punctured. Abdomen impunctate 

 above, finely punctured beneath. Thorax transverse, sides 

 arcuate, hind angles broadly rounded. Apex truncate, with 

 front angles less rounded. Elytra conjointly wider than long, 

 arcuate on the sides. At the posterior sutural angles are two 

 acute teeth pointing upwards. Abdomen very depressed above, 

 rounded on sides. The first four segments with double carinae 

 laterally. The second segment has a large crescentic elevated 

 tubercle or ridge, and the last segment a sharp, flattened tri- 

 angular tooth. Pubescence fine and inconspicuous. Length, 

 4 mm. ; width, 1.2 mm. One male taken in fungus belonging to 

 the Agaricince, November 3, 1909, Cincinnati, Ohio. Two 

 females were taken at same place, that may be of this species. 

 They are a trifle smaller and lack the tubercles and ridge, which 

 are evidently secondary sexual characters of the male. This 

 is one of the most remarkable Aleocharids I have seen, in the 

 ridge and tooth of abdominal segments, teeth of elytra and 

 very shining integuments. 



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