76 MK. F. F. LAIDLAW ON 



B. Upper surface of the head of the male entirelj' black. 



[1. (?. Upper lip pale j'ellow,prothorax entirely black ; no antehumeral 

 band on thorax, two j'ellow lateral stripes on either side. 

 Segments 3-7 of the abdomen carmine-red above, anal ap- 

 pendages yellow above. 

 ? • Unknown. j^ hyperythra Selys. Borneo.] 



2. $. Gense of a bright yellow colour, head otherwise entirely black. 



Prothorax with lateral carmine spots. Thorax with a fairly 

 broad antehumeral carmine band, a brick-red succeeded by an 

 orange line on either side of the thorax. Abdomen with carmine- 

 red on segments 1 and 2 above. 

 9. Unknown. D. 7,osei, sp. n. Borneo. 



3. $ . Head entirely black, prothorax with small lateral carmine spots. 



A fine carmine antehimieral strijie on thorax, with lateral 

 brick-red and orange lines; abdomen entirelj' black. 

 9 , Head with yellow band from eye to eye. Prothorax with a 

 small pair of lateral bosses on the median lobe, the posterior 

 margin produced backwards into a flat rounded median collar. 



D. humeralis Selys. Malacca ; 



3 a. $ . Antehumeral line absent, prothorax all black. ^^^' 



D. humeralis, var. nigra Forster. 

 Pahang. 



4. $. Head entirely black, prothorax entirely carmine above. Abdomen 



with segments 1, 2, 3 carmine above. 

 (?) 9 . Head with very narrow incomplete line passing from eye to eye ; 

 lateral ends of posterior margin of prothorax produced to form 

 two large forwardlj' directed horns (cf. D. verticalis). 



J>. feramana, sp. n. Borneo. 



The presence of a lower sector of the quadrilateral appears 

 to be fairly constant in D. humeralis, and perhaps generally absent 

 in the other species. 



Of the group which includes males with blue and black 

 markings, Borneo possesses the following species : — 



D. interrupta Selys, 



D. coUaris Selys, 



D. lansbergi Selys (?) ; 



whilst D. moultoni Laidlaw and D. gracillhna Selys perhaps 

 represent a third group, with yellow markings on a black ground. 

 D. vioultoni shows, I believe, some relationship to D. hyp&rythra, 

 and may be a melanotic species allied to it, and not primitive. 



Lastly, D. cacrantiaca Selys is a handsome Bornean species with 

 the anterior surface of the thorax bright oi'ange, and plentiful 

 orange markings on the abdomen in the male, which is very 

 distinct in its venation and colouring from other members of the 

 genus found in the island. The posterior mai'gin of the pro- 

 thorax of the female carries subtriangular, strongly recurved, 

 plate-like extensions. 



Description of neto species. 



DiSPARONEURA PERAMCENA, Sp. n. (PI. IV. figS. 8, 8 «.) 



2 J c? , 2 § 2 . Lawas and Limbang, Aug., Sept., 1909. 

 Length of abdomen : J ^9"5 mm. 

 55 hind wing: J 16 mm. 



