On new Bornean and Sumatran Mammals. 215 



40. Pseudagrion ?iubicum. 



Pseudagrion nubicum, De Selys, Bull. Acad. Belg. (2) xlii. p. 5J1 

 (1870). 



Two specimens. 



Fort Johnston, Nyasaland (P. Rend ill). 



41. Brachybasis rhomboidalis. 



Agrion rhomboidalis, Beauv. Ius. Afr. Am6r. p. 85, Neur. pi. vii. fig. 1 

 (1805). 



Seventeen specimens. 



Fourteen from Fort Johnston, Nyasaland (P. Rendall) ; 

 two from Delagoa Bay (Distant) ; and one from Durban, 

 March 1896 {Distant). 



42. Lestes obscurus, sp. n. 



One specimen. 



Barber ton. 



Exp. al. 50 millim. ; long. pter. 2 millim. 



Male. — Head and thorax black, dusted with pulverulent 

 blue; front of head greenish above, occiput and lower surface 

 of head pale, lower part of eyes pale, and two or three smrll 

 pale spots near the inner edge of the eyes above. Central 

 carina and three lines on each side of the thorax pale. LiQga 

 black. Abdomen bronzy green above towards the base and 

 cupreous beyond ; terminal segments broken off; sides and 

 under surface pale, with a black central line beneath. Wings 

 brownish hyaline, with 13 postnodal cross-nervules on the 

 fore wings ; pterostigma rather large, uniform black, covering 

 two cells, edged above by a slender reddish line. 



This is a very distinct species, somewhat resembling 

 L. barbarus, Fabr., but much darker. 



XXVIII. — Descriptions of new Bornean and Sumatran 

 Mammals. By Oldfield Thomas. 



The mammals now described were contained in, or examined in 

 connexion with, the last collection made by Mr. A. H. Everett, 

 whose death, after nearly thirty years' work and study in the 

 East Indian Archipelago, will be lamented by every naturalist, 

 and especially by those who had the privilege of his personal 

 acquaintance. To no one is our knowledge of the fauna, both 

 mammalian and avian, of that part of the world more deeply 

 Ann. & Mag. N. Hist. Ser. 7. Vol. ii. 18 



