some new species of Diurnal Lepidoptera. 257 



Type. Coolcsonia trimeni, sp. nov. 



I have compared this genus to Dr. R. Trimen's Erilcs- 

 sonia, but it presents important differences which may 

 prove more remarkable when the male sex is examined. 

 I dedicate it to Mr. Cookson, its discoverer. 



Coolcsonia trimeni, sp. nov. (Plate XIII, fig. 3.) 



$ . Upper-side. Orange-ochreous, suffused with reddish-ochreous, 

 deepening in colour towards the bases, brightest in the fore-wing. 



Primaries : Costal margin narrow and evenly black, outer margin 

 rather more broadly black ; apical third pure white, inwardly 

 bordered with a rather broad black band, comparatively straight and 

 even on its inner edge, and much suffused and irregular on its outer 

 edge, reaching from the costa to the outer margin, where it is 

 broadest ; the nervules crossing this white apex being distinctly 

 black and being more decidedly conspicuous as they recede from the 

 apex. A large black spot at the end of the cell and a smaller black 

 spot beyond the middle of the cell placed near to but apart from its 

 upper wall. 



Secondaries : With a black border, commencing very narrowly be- 

 yond the middle of the costal margin, gradually and evenly widening 

 towards the apex whence it becomes broken and though thickening 

 at the extremities of the median nervules is very narrow along the 

 inner margin and disappears before the base is reached. A distinct 

 black spot at the end of the cell placed well above the median 

 nervure. 



Under-side. Primaries brownish-ochreous, reddish in the cell ; a 

 distinct black spot at the end of the cell. The apical third consists 

 of a series of five narrowly black-bordered greyish conical spots placed 

 between the nervures, each one containing at its marginal base an 

 indistinct ochreous patch. The outer margin has a linear black 

 border. 



Secondaries pearly-grey, with the inter-nervular spaces more or 

 less suffused with reddish-brown scales which are most conspicuous 

 just beyond the middle. The basal half contains about twelve large 

 black irregular white-ringed spots, several of which, close to the 

 base are confluent, and a median row of irregular black dots. The 

 outer margin is bordered with a linear black band ; beyond which 

 are two rows of angular black markings placed between the 

 nervules, the outer row enclosing ochreous patches, the inner pale 

 grey. 



Head black, with two white spots behind the bases of the antenna 1 

 and two white streaks between the eyes. 



