Fekeday. — On a new (? ) Genus and Species of Butterfly. 265 



between the externo-medial (a, figs. 2 and 3) and innermost {b, figs. 2 and 

 3) sub-costal nervures,* at their junction with the vein closing the discoidal 

 cell, is rather broader than in P. pluto ; none of the nervures dilated at the 

 base. 



Type — E. butleri. 



The accompanying diagrams (plate IX.) represent : 

 Fig. 1. The disposition of the nervures in the primary wings ofE. blandina. 



2. Do. do. do. do. P. pluto. 



3. Do. do. do. and secondary wings 



of E. butleri. 

 and are given for comparison ; the figures enlarged to two diameters. 



Not having the descriptions of all the genera of the SatyrincP, I should 

 hesitate in forming a new genus for this insect ; but, as "the lower radial 

 of primaries emitted above the angle of the discocellulars instead of below 

 it," is given by Mr. Butler f as one of the distinctive characters of his new 

 genus Percnodaimon ; and as the now-describing butterfly has the like char- 

 acter, but disagrees with Percnodaimon in the form of the club of the 

 antenna, and the presence of the first sub-costal nervure ;:[ I may reason- 

 ably assume that it differs from all the other genera, and have therefore 

 ventured to describe it as a new genus. 



Erebiola butleri, sp. nov. 



Primaries : Upper-side smoky black ; a white-pupilled black ocellus between 

 the externo-medial and innermost sub-costal nervures, and equidistant 

 between the discoidal cell and hind margin. Under -side ferruginous, suf- 

 fused (except the apical and hind-marginal area) with slaty black ; ocellus 

 as on upper side ; a sub-hind-marginal row of four whitish marks, the two 

 nearest the apex being the more distinct and sUvery, followed by a dusky 

 shade on their outer margin. 



Secondaries : Upper-side smoky black ; a transverse row of three minute 

 white dots near the hind margin ; the dots arranged in a straight line 

 pointing towards the anal angle, and situated respectively between the 

 externo-medial, subexterno-medial, interno-medial, and subinterno -medial 

 nervures. Under-side ferruginous, suffused with a dusky shade from the 

 base to the transverse row of spots ; a longitudinal discoidal streak of 

 silver ; a transverse row of three silvery spots near the hind-margin, 

 followed by two small longitudinal silvery streaks near the anal angle ; also, 



* The Orismology in Kirby and Spence's Introduction to Entomology (the only au- 

 thority I have) is followed in describing the nervures. — E.W.F. 

 t Ent. Mo. Mag. Xin., p. 152. 



X As Mr. Butler does not mention the absence of this nervure in describing his genus 

 Ferciwdaimon, I imagine he must have overlooked it. — R.W.F. 



27 



