412 A. E. Eaton — Notes on some native Epliemeridse. [N'o. 4, 



that on tlie cubitus, and at the fork of the pr^bi-aohial ; another farther 

 out on the pobi-achial ; and one near the base of the fore wing at the 

 commencement of the next intex'calar vein. Hiudwings spotless or with 

 spots only faintly indicated. 



Length of body <S 15, 2 18 ; wing d" 13-15, ? 21 ; setae $ im. 26 

 & 28 to 30 & 3-i m. m. 



Ephemera consors, sp. nov. 



5854 58.''5 

 Two S imagos labelled " Kulu — -— and ," and two 9 subimagos 



o 5 , 



labelled "Kulu— p— and — — " in the Indian Museum; and 1 9 sub- 

 o o 



imago labelled " Sikkim, 4,000 feet, 7 [i. e., July] 80, H. J. Elwes, in 



McLadi. Mus." 



Subimago (di-ied) 9 . — Wings transparent, very faintly tinted with 



extremely light brown ochreous grey, or in the sub-marginal area of the 



fore wing with very light amber, with a small, blackish, grey spot at the 



fork of the prsebrachial nervm^e, another at the bulla of the sub-costa, 



and single greyish dots nearly in a straight line with them on the sector 



and cubitus of the fore wing. Hind wing spotless. Neuratiou of the 



fore-wing distinct to the naked eye (over white paper) from the costa 



to the sector, and then hardly discernible onwards to the pobrachial 



nervure : after that the minor neuration and the neuratiou of the hind wing. 



cannot be distinguished. When magnified, the neuration of the hind 



wings and of the greater portion of the fore- wing is opaque and concolor- 



ous with tlie membrane : but many of the cross veinlets in the basal half 



of the wing shift in colour to piceous in certain postures, and all of them 



(excepting the greater cross-vein) anterior to the sector are pitch black. 



The pronotum is marked as in E. remensa, with a small oval black spot 



anterioi'ly on each, side in a farrow : and in both species there is a small 



acute triangular black spot in front of the posterior coxa. 



Imago (dried) cf. — Tei^minal jointlets of forceps proportionally 



longer than in E. remensa, and more slender ; the last jointlet shorter 



than the penultimate in the dried specimen : basal joint relatively 



sbort. Venter bilineate lengthwise interruptedly in the posterior seg-. 



ments : the lines are narrow and as far apart from each other in the 9th 



as in the preceding segments, and in the 5th, 4th and perhaps the 3rd 



sec^ments become greatly abbreviated or even reduced to dots ; but the 



2nd and 1st segments are spotless. Wings much as in the 9 subimago, 



but of course more transparent : the spots in the fore wing ai'e similar 



but less distinct ; the greater part of the neuration is (in opaque view) 



lic^ht raw umber brown changing (in transmitted light) either to brown- 



