474 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



I'ypes.—lIolotyi^Q and one paratype, U.S.N.M. No. 58743; one 

 paratype in my collection, 

 ^t'cor^s.— Formosa, Arisan (VI-5-32), Musha (VI-31-32). 



162. ATHETA (CHAETIDA) LONGICORNIS Gravenhorst 



Localities.— Formosa, Taiheizan (V-9-32). 



163. ATHETA (CHAETIDA) sp. 



Localities.— Formosa, Musha (V-20-32). 



164. ATHETA (COPROTHASSA) SORDIDA Marsham 



Localities.— Japan, Tokyo (IV-19-31). 



165. ATHETA sp. 



Localities.— Formosa, Arisan (VI-6-32). 



166. PELIOPTERA FORMOSAE, new species 



Head, thorax, and abdomen black, the head and thorax greasy lus- 

 trous, the abdomen shining, the posterior margins of the tergites nar- 

 rowly ruf escent ; elytra yellow, greasy lustrous. Antennae black, the 

 first segment reddish yellow. Legs reddish yellow. Male, in size, 

 build, and color much like acuticoUis Kraatz but the foreparts less shin- 

 ing and with different sculpture. Head orbicular, the eye almost as 

 long as the postocular region, narrower than the thorax, the vertex 

 superficially impressed, along the middle impunctate, elsewhere with 

 small moderately close ^junctures and distinct coriaceous ground sculp- 

 ture. Antennae with the first and second segments of about equal 

 length, the third a little shorter and narrower, the fourth to tenth 

 transverse differing but little, about a half broader than long, eleventh 

 as long as the ninth and tenth together. Thorax very slightly trans- 

 verse, the sides feebly rounded, all the angles broadly rounded, the 

 base before the scutellum produced a little backward as in acuticoUis, 

 the disc with four larger quadrately placed punctures, the general 

 puncturation finer and closer than on the head but with similar 

 ground sculpture. Elytra very slightly longer but broader than the 

 thorax, broader than long (2.75:2), not emarginate postero-exter- 

 nally, finely and closely punctured, finely coriaceous, with a strong 

 shining keel near the suture extending nearly from the base and par- 

 allel to the suture to beyond the middle and there curved slightly in- 

 ward. Abdomen parallel, almost impunctate, the ground sculpture 

 very fine and transverse, the third, fourth, and seventh tergites at 

 the middle of the posterior margin each with a tubercle, that of the 

 seventh the largest: eighth with seven or eight short ridges at the 

 posterior margin which is truncate and feebly crenulate. Female, 

 unknown. Length, 3 mm. 



Ty2)e locality. — Formosa, Arisan. 



