64 PROCEEDINGS OF THE NATIONAL MUSEUM vol.76 



or less. First tergite with preapical band narrow, usually abruptly 

 impressed on the anterior margin and with the punctures differen- 

 tiated only on the posterior border. First sternite with the posterior 

 fossa weakly crenulate, disk polished, impunctate, with the lateral 

 grooves extending forward a variable distance, sometimes to anterior 

 apex; constricted portion with an elongate median keel. Tergites 3 

 to 5 with punctures not clearly outlined, apical ones larger than the 

 more densely grouped anterior ones; impunctate margins at most 

 about three times as wide as width of largest adjacent primary punc- 

 tures. Length, 5 to 7 mm. 



Distribution. — Borneo; Fukien, Chekiang, and Kiangsu, China; 

 Keikido, Chosen. 



The descriptive notes on the female and the description of the 

 male are based on a selected specimen of male from Kuliang, China, 

 1926 (Jen), placed in the United States National Museum and on 

 the following specimens in the collection of the Japanese Beetle Labo- 

 ratory: From Suigen, Chosen, 1 female, June 3, 1922 (King), King 

 No. 9; 1 female, April 30, 1924 (Sato), No. 6; 2 females. May 1, 1924 

 (Sato), Clausen No. 1857; 1 female. May 1, 1924 (Sato), No. 6. From 

 Chinkiang, China, 2 females, July 2 and 7, 1924, Nos. B and P ; 6 

 males, July 4 to 7, 1924 (Jaynes) ; 1 male, July 7, 1924 (Illing- 

 worth; 1 male, July 7, 1924; 7 females July 7 to 12, 1924 (Jaynes) ; 

 8 females, July 20 to 26, 1924 (Illingworth), " ex. hedge "; 1 female, 

 July 28, 1924, No. 0; 1 female, August 4, 1924, No. 37; 1 female, No. 3; 

 1 female, June 24, 1925 (Jaynes) ; 160 females, China, 1925, Riverton 

 'Exp. No. 120. From Hangchow, China, 100 females, April 5 to June 

 9, 1925 (Chao) ; 17 females, April 14 to May 11, 1926 (Jaynes) ; 7 fe- 

 males, May 5 to 14, 1926 (Chao). From Kuling, China, 14 females. 

 May 15 to June 25, 1926 (Wong) ; 1 female, August 21, 1926 (Wong). 

 From Kuliang, China, 1 female, June 20, 1925, No. Al; 3 males, 

 August 4 to 16, 1926; 24 males, 1926 (Jen). From Yangchow, 

 Chma, 1 female, August 14, 1924 (Wong). Representative speci- 

 mens have been deposited in the collections of the United States Na- 

 tional Museum, the British Museum, the Philadelphia Academy of 

 Natural Sciences, and the Illinois Natural History Survey. 



Our concept of the species is based on, females from our collection 

 compared with the type female from Borneo in the British Museum 

 by Mr. Gahan, who writes that he could see no difference except in 

 size, the type being larger. This species has been referred to in the 

 notes and articles published by the workers of the Japanese Beetle 

 Project as Jaynes No. 114, Clausen No. 1857, King No. 9, and Rohwer 

 No. 10. The association of sexes in this species was made from col- 

 lecting data, males and females having been taken together at Chin- 

 kiang, China, under circumstances indicating that they were of the 

 same species. 



