68 EEV. A. E. EATON ON EECENT EPHEIMEEID^ OE MATELIES. 



marked on eaeli side with a rather darker longitudinal stripe : in the living insect the 

 pronotum doubtless is translucent light sepia-brown with a pitch-black stripe on each 

 side. Abdomen discoloured when dry, dark pitch-brown with blackish markings : in 

 specimens preserved in spirits it is light translucent bistre with opaque intense bistre- 

 brown (? pitch-black in life) markings, viz. — a blotch of irregular form on each side of 

 segments 1-9 reaching from the base of the segment nearly to the edge of the terminal 

 border (resembling a quadrangular figure emarginate at the sides and summit, composed 

 of a pair of subtriangular longitudinal streaks, curved slightly in opposite directions, 

 standing apart back to back and united to each other by a broad band in the greater 

 part of their length anteriorly), constituting a single series of blotches on each side of the 

 back ; also in segments 7-9, between the blotches and adjacent to the dorsal vessel, a 

 narrow longitudinal streak on each side from the base of the segment ; also in segments 

 1-8, on each side of the venter, a single series of discontinuous longitudinal subliuear 

 stripes, some of them dilated a little at the tips. Setae medium raw-umber brown with 

 piceous joinings. Fore legs dark raw-umber or dark bistre-brown, the tarsus more 

 translucent, the knees, end of tibia, first tarsal joint and ungues more opaque. Hinder 

 legs, with the femur light bistre-brown, coxa and trochanter varied with pitch-brown, the 

 tibia and tarsus lighter than the femur and perhaps rather yellower, the ungues rufo- 

 piceous or dark burnt-umber-brown, and sometimes the terminal borders of the tarsal 

 joints of this colour, the whole leg from the femur onwards changing in transmitted light 

 to brownish or greyish aml^er : sometimes a depression outside the femur close to the 

 extremity, and also the tip of the tibia is dark. Wings transparent, tinged at the wing- 

 roots with intense bistre-brown, and marked elsewhere with ivory-black in opaque view, 

 or with intense sepia in transmitted light ; the hind wings usually bordered rather l)roadly 

 along the terminal margin with a faint tint of light greyish : neuration uniformly piceous. 

 The markings of the wings present considerable diversity in the size of the spots and the 

 edging of the cross veinlets. In strongly marked examples nearly every cross yeinlet in 

 the disk of the fore wing (excepting those near the terminal margin) situated between 

 the costa and the anal nervure (8) is dark-bordered, the bordering of many being 

 dilated and generally somewhat guttulate in certain areas, especially in the marginal 

 and submarginal areas, in the distal part of the next area, and occasionally in the two 

 areas adjacent to the first accessory nervure after the pobrachial (7). In addition to the 

 customary fascia extending from the costa to the fork of the pra?brachial (6), spots of 

 irregular shape are apt to be formed at the proximal terminations of many of the inter- 

 polated nervures, or near them, viz. — Three spots within the space bounded by the 

 sector (3) and the cubitus (5), two of them beyond the fascia, and one in the axil of the 

 main nervures ; also three spots in the interspace between the pobrachial (7) and the 

 anal (8) nervures, one of them at the termination of the foremost of the long interpolated 

 nervures, another at the head of the much shorter nervure in front of that, confluent 

 sometimes with the fascia, but often only extended forwards to the hinder branch of the 

 praibrachial (6^), and a third sj)ot at the head of the other short nervures interposed 

 between the two long interpolated nervures. In the hind wing the dark bordering of 



