672 MR. A. G. BUTLER ON [DeC. 14 



» 



costal border and veins ; body below sordid white, legs partly brown- 

 ish. Expanse of wings G lines. 



One specimen, slightly rubbed. 



More nearly allied to N. strigulalis than any other species known 

 to me, but considerably smaller. 



45. Hypsa zebrina. 



Hypsa zebrina, Butler, P. Z. S. 1877, p. 815. 

 Seven specimens, completely establishing the constancy of the 

 specific characters. 



46. Damalis egens. 



Hypsa egens. Walker, Cat. Lep. Het. ii. p. 453 (1854). 

 Four specimens. 



NvCTEMERIDiE. 



47. PiTASILA INCONSTANS, Sp. n. 



Near to P. bijuncteJla of the Philippines. Primaries dark brown, 

 the extreme base cream-coloured spotted with black ; two oval white 

 spots close to the base, one costal, the other (which is much larger) 

 interno-median ; an oblique series of four elongated spots before the 

 middle, a broad oblique belt, partly divided into spots by the veins 

 and forking externally from second median vein to costa, just beyond 

 the middle ; two large subapical spots, a dot on the outer margin, 

 and part of the inner margin chalky white. In some examples all the 

 markings on the external half are united at their extremities, in which 

 case the specimen would be better described as having the apical half 

 white, varied by five transverse curved brown streaks and spots, and 

 with the apical border brown ; but all sorts of intermediate forms 

 exist between the two extremes. Secondaries snow-white with a dark- 

 brown border, interrupted at apex and on the second median interspace 

 by large white spots, which frequently break through and unite with 

 the general area of the wing ; fringe white. Thorax cream-coloured 

 spotted with black ; abdomen bluish white with black dorsal dots. 

 Wings below darker than above; body below sordid white. Expanse of 

 ■wings 2 inches to 2 inches 2 lines. 



Six examples, exhibiting considerable variation of pattern. 



Some time since Mr. Kirby called my attention to a paper on the 

 Nyetemeridcc by Snellen van VoUenhoven, published in the 'Tijdschrift 

 voor de Dierkunde' for 1863, pp. 35-51, in which a number of new 

 species are described. As this paper appears to have been overlooked 

 by every one, it may be useful to give a list of these new species, stating, 

 so far as I have been able to identify them, what they are : — 



*1. Leptosoma anthracinum, De Haan, = Secusio mundipicta. 



Walk. 

 *2. Leptosoma assimile, Yoll. Close to Secusio distinctOy Walk. 

 *3. Leptosoma herklotsii-, Yoll. Close to Nyctemera baulus, 



gois^. 



