NEW RECORDS OF STAPHYLINIDAE — CAMERON 463 



(3: 2.5), widest at the middle, straightly retracted behind, the punc- 

 turation as on the head ; ground sculpture feeble. Elytra longer than 

 the thorax (4:3), as long as broad, uneven, with similar puncturation 

 and ground sculpture. Abdomen gradually narrowed to apex, dis- 

 tinctly margined, the puncturation close, less coarse than on the elytra, 

 the ground sculpture similar. Male, fifth sternite broadly impressed 

 on the middle of the posterior half, the posterior margin of the im- 

 pression slightly emarginate, the pubescence scarcely thicker than on 

 the rest of the surface; sixth rather deeply, triangularly emarginate. 

 Length, 4.5 mm. 



Tyjye locality. — Formosa, Arisan. 



Types. — Holotype, U.S.N.M. No. 58735; one paratype in my col- 

 lection; both collected V-25-34. 



67. STENUS (HEMISTENUS) KWANTUNGENSIS, new species 



Black, moderately shining, the elytra with a small obscure oval 

 orange-red spot postero-externally and about equidistant from the 

 lateral and posterior margins, farther from the suture. Antennae 

 reddish yellow, infuscate apically. Legs and palpi reddish yellow. 

 In size and build very like alienus Sharp but with different tarsal 

 structure, less shining, the elytral spot larger, oval, equally obscure, 

 sculpture of the foreparts coarser, that of the abdomen finer. Head 

 as broad as the base of elytra, feebly broadly bi-impressed, only 

 slightly elevated in the middle, closely and moderately coarsely punc- 

 tured. Antennae slender, extending to the base of the elytra, the 

 eighth to tenth segments only slightly longer than broad. Thorax 

 longer than broad (3:2.5) widest at the middle, the sides arcuately 

 retracted behind, rounded in front, at the sides very obscurely im- 

 pressed and without median sulcus, coarsely rugosely punctured. 

 Elytra as long as the thorax, broader than long (3.5:3), the sculp- 

 ture similar. Abdomen gradually narrowed toward apex, distinctly 

 margined, closely and moderately finely punctured throughout. Male, 

 fifth sternite broadly impressed along the middle, the impression 

 deeper behind and closely pubescent; sixth arcuately emarginate. 

 Length, 3.5-4 mm. 



Type locality. — South China, eastern Kwantung, Yim Na San. 



Types. — Holotype and 4 paratypes, U.S.N.M. No. 58734 ; one para- 

 type in my collection; one paratype in Gressitt Collection in Cali- 

 fornia Academy of Sciences (C. A. S. No. 5952) . Collected VI-15-36. 



68. STENUS (HEMISTENUS) RUGOSIPENNIS, new species 



Black, rather shining. Antennae reddish. Palpi and legs red- 

 dish yellow. The knees more or less infuscate. Head as broad as the 

 base of the lytra, distinctly bisulcate, closely and coarsely punctured, 



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