2 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



Type.— {C2it. No. 41241, U.S.N.M.) from British East Africa: 

 Mount Kenia to Fort Hall (E. A. Mearns coll.) in the United States 

 National Museum ; paratype in collection of the author. 



In size and shape of the body very similar to A. formosus Modeer 

 {-capensis Authors) and likewise dark colored beneath. Above A. 

 conspieuus is more greenish (bluish in fonnosus) and easily to be 

 recognized by the uniform sculpture of the intervals on elytra, none 

 of which is more strongly alutaceous than the others, a character 

 which is unique in the genus. 



GYRINUS ORIENTALIS forma POLITUS, new female form 



While in the typical form the disk of elytra in the female speci- 

 mens is finely alutaceous, there is no trace of such sculpture in 

 Szechuan specimens. All other characters are like in the typical 

 form, and the males are not different at all. 



Type and seven paratypes. — (Cat. No. 41242, U.S.N.M.) from 

 China, Szechuan near Kiating, Shin-Kai-Si, Mount Omei, 4400 feet 

 (D. C. Graham 1921) in the United States National Museum; three 

 paratypes in collection of the author. 



The typical form is represented in the same collection from China, 

 Kiangsi Prov., Ruling near Kiu-Kiang, near Yellow Dragon 

 Temple, October 16, 1919 (H. F. Loomis). I have seen other speci- 

 mens from: Soochow, March 25, 1923 (Suenson coll., Coll. Ochs) ; 

 Shanghai (Mus. Stettin) ; Foochow (Cons. Siemens coll. 1907, Miis. 

 Bremen); Hongkong, 1876 (Coll. Ochs); Pingshiang (Dr. Kreyen- 

 berg coll., Coll. O hs) ; Northern Kuangtung, Tsha-jiu-san 1400 m. 

 May-^une, 1912 (Mell coll., Coll. Ochs) ; Yiinnan-fu, San-Non-Kai 

 (Coll. Ochs) ; S. E. Yunnan, Kuang-Si-Hien 2100 m. (Coll. Ochs). 



GYRINUS JAPONICUS forma FRANCKI, new female form 



As with the preceding species there exists also a female form of 

 G. japonicus of probably local distribution with polished elytra, as 

 in the males. In the typical female the disk of the elytra is very 

 strongly alutaceous. 



The type., a single specimen, was presented to me by Dr. P. Franck 

 of Hamburg, in whose honor the new form is named, and is labeled : 

 East Asia, Vladivostok (Hermann Frieb coll.) In all other charac- 

 ters it agrees with specimens of G. japonicus from different Japanese 

 localities which are in my collection. 



GYRINUS NATATOR subspecies SZECHUANENSIS, new subspecies 



Shape of the body and the color of under surface as in G. natotor 

 suhstriatus: rather broadly oval, mesosternum dull rufous, anal seg- 

 ment and epipleura bright red. The serial punctures in elytra sim- 



