136 EEV. A. E. EATON ON EECENT EPHEMEEID^ OE MATELIES. 



roots piceoiis. Abdomen piceous with opaque joinings. Setae brownisli- or greyish- 

 white, with deep-black joinings. Length of body, 2 5-6 ; wing 8-8'5 ; setae, im., 

 upwards of 15 millim. 



JIab. Rainl:)odde, Ceylon, at upwards of 4000 ft. altitude. An adult c? in the British 

 Museum, perhaps of this species, captured in Ceylon by Mr. G. Lewis, was noted by him 

 as luminous at night. Being carded, it cannot well be described. 



Teloganodes major, sp. nov. 



Snblmago [dried), ? . — Wings very similar to those of T. tristis ; neuration concolorous 

 with the membrane, the longitudinal nervures opaque ; the pterostigmatic space of the 

 fore wing contains upwards of 14 nearly straight, simple cross vcinlets. Legs varying 

 in colour, perhaps with age; fore femur pitch-black or pitch-brown; hinder femora 

 pitch-brown or deep luteo-fuscous, with a dark longitudinal median streak ; fox'c tibia 

 lutescent ; hinder tibiae dull testaceous ; tarsi either entirely blackish, or else only the 

 terminal joint and ungues blackish. Body discoloured ; setse light sepia-grey, with black 

 joinings. "Oculi during life red" {teste Nietner, MS.). Length of body, ? [shrunken) 

 8 ; wing 10-12 ; setae about 25 millim. 



Sab. Rainbodde, Ceylon, at an altitude of 4000 ft. and upwards. Two examples 

 (Nos. 17 & 18) in Dr. Hagen's collection, and one (mistaken by me for T. tristis in 1871 

 [Trans. Ent. Soc. London, 1871, p. 131 note]) in the British Museum. 



Third Series of Group Ii. of the Genera. 



Adult. — The anal (8) and second axillar (9^) nervures, together with the margin of the 

 fore wing, enclose a trilateral space, truncate or abrupt at its apex, and curved at the 

 sides ; anal nervure either contiguous with, or nearly approximated to, a pobrachial (7 

 or 7^) nervure at the wing-roots ; first axillar (^9) curved or arched, sometimes falling 

 short of the wing-roots. Hind wings absent, or small [fide Vayssiere), with the costa 

 sharj)ly angulated near the base, and the subcosta nearly straight. Thoracic spiracles 

 relatively small, usually open in dried specimens ; orifice of the metathoracic spiracle 

 oval ; that of the mesotlioracic spiracle angular and short, without a guard, its upper lip 

 convex externally, vaulted within, much larger than the lower lip, and with its edge 

 bent almost at right angles in the middle. Forceps-limbs sessile upon the segment, at 

 the sides of a large immovable lobe, which is represented by a lamina in the ? . Eyes 

 alike in both sexes, evenly contoured, round or oval, small and far apart. Subimago 

 restless until the moulting is imminent, which is speedily effected within a few minutes 

 of the preceding ecdysis, when not retarded by torpor induced by exposure to cold. 



This series of genera has affinity with the sections typified by Ephemerella and Poly' 

 mitarcys. It is conveniently grouped with the former on account of the character of the 

 nymphs of the section of Ccvnis. Where these differ essentially from those of the two 

 sections already mentioned, they resemble nymphs of the section of Leptoplilebia. 



Their relationship to the section of Polymitarcys is traceable in the imago, viz. in the 

 formation of the head, the sexual disparity in the proportional length of the setse, the 



