212 Treubia Vol. HI, 2. 



In all species of Dyscologatnia there is a great difference between the 

 males and females. The general outline of the d" is elongated, the body is 

 depressed, the pronotum transversely oval, the tegmina long and much sur- 

 passing the abdomen. 



In the Ç the outline is oval, shiel-dlike, the body is elevated, the 

 pronotum semi-orbicular, posterio laterally drawn out into angles, the tegmina 

 shorter than the abdomen or only slightly exceeding it. 



The O. U. M. has a d", from Sadong, Sawarak (J. H. CRANSTONE), 

 and a $, from Malacca (Castelnau, 1862). The dimensions of the cf are: 

 total length 33 mm; body 24 mm; pronotum 8.5 X ^3 mm ; tegmina 2Q mm. 



Distribution: Lower Siam; Malay Peninsula; Singapore; Borneo. 



Subfamily OXYHALOINAE. 



Diploptera dytiscoidcs, ServillE. 



1 (ƒ, without locality label. 



Serville's type came from Australia, and Brunner recorded the species 

 from Burma and Tahiti. The O. U. M. has specimens from Honolulu 

 (Blackburn), Buru (Mouhot), Sarawak (Wallace), Manila, and Ceylon (Thwaites, 

 1872). I recorded this species from Fort Canning, Singapore (Feb. 1915), 

 and later took both cT and Ç on Gunong Kledang, Perak (Nov. 1916). Though 

 widely distributed, this form seems to be nowhere common. 



Distribution: Ceylon; Burma; Malay Penninsula; Singapore; Sarawak; 

 Philippines; Buru; Australia; Honolulu; Tahiti. 



Subfamily PERISPHAERINAE. 



Paranauphoeta rufipes, BRUNNER VON WATTENWYL. 



Paranauphoeta rufipes^ Brunner. Syst. Blatt, p. 400 (1865). 



Naiiphoeta discoidalis, Walker. Cat. Blatt. B. M., p. 39. (1868) 



Paranauphoeta rufipes^ var. Novae Guineae, Bolivar. Act. Soc. L . ^an, 

 1898, p. 138. 



The collection contains 6 mature & one immature specimen from New 

 Guinea, viz. 



1 Ç, New Guinea (TER POORTEN). 



1 .f, 2 + +, New Guinea (GjELLERUP, 1911). 



1 Ç, West Berau Streek, Mac Cluer Golf. 



1 d", Tami River, Bivak Hoesin, Humboldt Bay. 



Brunner's type came from Ternate, but the specimens collected by 

 Wallace and described by WALKER were from New Guinea, Aru, Dorey, 

 Batchian and Waigiou, and from all of these localities there are represen- 

 tatives in the O. U. M. An example of P, riifipes var. Novae Ouineae, Bo- 

 livar, from the Astrolabe Mountains, presented to the O. U. M. by the 

 Brussels Natural History Museum, seems to differ from the others merely 

 by being of a paler, washed-out colour. 



Distribution: Ternate; Waigiou; Aru; Dorey; Batchian; New Guinea. 



