596 The Philippine Journal of Science 1923 



received by second cubital close to base ; second recurrent sinuate 

 below, received by third cubital a distance about equal to half the 

 length of second intercubitus from base of cell ; second cubital 

 cell more than twice as long on cubitus as on radius. Black; 

 scape, flagellum beneath, tubercules, and tegul<e testaceous ; tro- 

 chanters, four anterior femora above, all tibia- and tarsi yellowish 

 with some brownish inf uscations ; gaster rufous ; head and thorax 

 with usual silvery hair; wings hyaline, venation dark brown. 



Type locality.— Singapore, Straits Settlements. 



Described from one male received from C. F. Baker. 



Type.— Catalogue No. 25039, United States National Museum. 

 Diodontus scutatus Rohwer. 



In the material examined are two new color varieties of this 

 species which may be distinguished by the following key : 



and sternum entirely pale; gaster ferruginous; scutum 



mostly pale... D . scuta tus var. scutatus 'Rohwer. 



Mesepisternum mostly and sternum entirely black. . 2. 



2. Mesepisternum with a yellow line below; anterior part of scutum yellow; 



gaster rufous D . scutatus var mindanaoensis Var . nov . 



Mesepisternum entirely black; anterior part of scutum black; gaster 



Diodontus scutatus var. borneensis var. nov. 



Female.— length, 7.5 millimeters. Because of the dark gaster 

 this superficially resembles Diodontus xanthognathus Rohwer, 

 but it differs markedly from that species. The scutum, except 

 a quadrate spot before the scutellum and the narrow lateral 

 margins, is black. Mesepisternum (except spot below tegula) 

 and sternum black; metapleura black; gaster piceous; otherwise 

 colored like the typical form. 



Type locality.— Sandakan, Borneo. 



Described from one female received from C. F. Baker. 

 T^e.— Catalogue No. 25040, United States National Museum. 

 Diodontus scutatus var. mindanaoensis var. nov. 



Female.— Length, 8.5 millimeters. Differs from the type in 

 the following color characters: Black spot on the scutum larger, 

 covering most of the surface; base and apex of propodeum 

 black; mesepisternum, except prepectus and a narrow longitu- 

 dinal ventral line, and mesosternum black; metapleuron black. 

 Type locality.— Iligan, Mindanao. 



Described from a single female received from C. F. Baker. 

 7?/pe.— Catalogue No. 25041, United States National Museum. 

 this may possibly be the female of variety A. 



