I 



ABT.3 NEW SPECIES OF WATER BEETLES OCHS 5 



ORECTOGYRUS ALLUAUDI Regimbart 



Orectogyrtis aJluaudi R^gimbaut 1899, Ann. Soc. Ent. France, ser. 6, vol. 9, 

 p. 250; 1891, Ann. Soc, Ent. France, vol. 60, p. 733, pi. 19, fig. 27; 1895, 

 Mem. Soc. Ent. de Belgique, vol. 4, p. 236; 1902, Ent. Tidskr., vol. 23, 

 p. 299.— OcHS 1926, Ann. Mus. Civ. Genova, vol. 52, p. 168. 



Described from the Ivory Coast, collected moreover in Liberia, 

 Upper Senegal, Cameroon, Upper Congo, Eritrea, and N. E, Rhodesia 

 in several varietal forms. The United States National Museum has 

 a series from Liberia: Mount Coffee February, 1897 (R. P. Currie), 

 where the insect was collected together with Orectogyrus sexualis 

 and specularis. 



I have recently seen a single male specimen in the Hamburg 

 Museum from Mecutine, about 70 kilometers west of coast of Mozam- 

 bique, November 10, 1926, which is exceptionally dark colored, with 

 whitish pubescence, and exhibits no trace of the triangular yellow 

 spot which is generally present at the side margin of pronotum. 



ORECTOGYRUS DISTINCTUS Regimbart 



Orectofjyrus schistaceus IlficiMB.VRT 1883, Ann. Soc. Ent. France, ser. 6, 



vol. 3, p. 457, pi. 14, fig. 163 (err. det.). 

 Orectogyrus distinctus R^gimb.aut 1886, Ann. Soc. Ent. France, ser. 6, vol. 3. 



p. 267 ; 1895, Mem. Soc. Ent. de Belgique, vol. 4, p. 234 ; 1907, Ann. Soc. 



Ent. France, vol. 76, p. 242; 1908, Wiss. Erg. Schwed. Deutsch Ost 



Afrik. Exp., vol. 7, pt. 1, p. 8.— Peschet, 1921, Voy. Babault, p. 22, 



pi. 2, fig. 6.— OcHS 1924, Ent. Blatter, vol. 20, p. 240. 

 (?) Orectogyrus suturalis Zimmerman, 1917, Ent. Mitt., vol. 6, p. 170. 



Type locality. — Usambara. Known from many localities in British 

 East Africa and Tanganyika-Territory, and moreover collected in 

 Nyassaland. Since my last publication in 1924 I have seen specimens 

 from British East Africa: Kibvezi (Scheflfler, in coll. Ochs) ; Kathini, 

 Limuru, March 5, 1918 (T. J. Andersson, British Museum). Tan- 

 ganyika-Territory : Kumburu (Museum Hamburg) ; East Usambara, 

 January, 1909 and December, 1915, Sakaru, September, 1902, Moa, 

 April 1904 (Methner coll.). 



The United States National Museum has numerous specimens from 

 British East Africa: Mount Kenia to Fort Hall, 8,300 feet, and 

 Wambugu (E. A. Mearns coll.), most of which exhibit very nice 

 bluish reflections on the smooth parts of the upper surface. 



ORECTOGYRUS CUPRIFER Regimbart 



Orectogyrus cuprifer Regimbart 1883, Ann. Soc. Ent. France, ser. 6, vol. 3, 



p. 462; 1895, Ann. Mus. Civ. Genova. ser. 2, vol. 15, p. 194; 1895, Mem. 



Soc. Ent. de Belgique, vol. 4, p. 234.— Ochs, 1924, Ent. Blatter, vol. 20, 



p. 240 ; 1925, vol. 21, p. 184 ; 1926, Ann. Mus. Civ. Genova, vol. 52, p. 171. 



The United States National Museum has several from Lourengo 

 Marquez: Mahota, June 6, 1909 (from C. W. Howard), which is the 



