No. XXVL— EPHEMERID^. 



By the Rev. A. E. Eaton, M.A., F.E.S. 

 (Communicated by Prof. J. Stanley Gardiner, M.A., F.R.S., F.L.S.) 



(1 Text-figure.) 

 Read 16th January, 1913. 



A SINGLE species of this Family was obtained by the Seychelles Expedition. The 

 genus Hagenulus represented by it was previously known from Cuba and the Tenasserim 

 Valley [cf. Eaton, 1882 and 1892) ; but the habits of the flies were unrecorded. 



Hagenulus Eaton, Ent. M. Mag., vol. xviii. 1882, p. 207 ; Revisional Monograph* 

 of Recent Ephemeridse, Trans. Linn. Soc. London, ser. 2 (Zool.), vol. iii. 1888, pp. 83, 113, 

 PI. 15, figs. 21 bis. 



1. Hagenulus scotti, sp. nov. 



A. Wings of H. scotti, 9 im., not fully flattened out; the fore wing 

 4 mm. long. B. Hind wing more enlarged. 



Subimago (dried). Wings light grey, the neuration subopaque or piceous, but 

 nowhere dark-bordered. 



Imago [dried and carded). Cross- veinlets about 9 or 10, simple and nearly straight, 

 in the pterostigmatic portion of the marginal area, but evanescent or wanting before the 



* In the "Analysis" at the end of this Monograph, on p. 313, it is stated that in llagemUus "at the 

 roots of the fore wing the 1st Axillar (9") meets the 2nd Axillar nervure." An examination of the wing of the 

 Seychelles species shows that it would be more correct to say that the 1st Axillar meets or almost meets the 2nd 

 Axillar nervure. 



55—2 



