30 



[Februaiy, 



small, iK-atlior-feeding raoo (or "Darwinian spoc\cs")t'li'j'ro/mmaria,JI.-S.{Stgr.- 

 Rebel, No. 3381a). Tlie latter is only rworded for Britain. Tlie former is far 

 more widely distributed ; its range, as I gave it in Trans. City Lend. Ent. Soc, ix, 

 pp. 51-52, embraces Cheshire, Lancashire, Cumberland, Swansea (one specimen, thus 

 one record does " exist for Wales "), Scotland (widely distributed), France (ditto), 

 Germany (ditto), Switzerland, Austria, Norway and Sweden (abundant), Russia, and 

 apparently Labrador and North America. Petersen, in liis recently published 

 " Lepidopteren-Fauna von Estland " (p. 129), sliows that it it also not uncommon 

 at Reval and in Northern Livonia, and doubts (judging from his own material) 

 whether the true 0. dilntala occurs there. 



246, Richmond Road, N.E. : 

 December, 1902. 



a I tTt c I 



A NEW SPECIES OP EPEEMERIDJE FROM NORWAY. 

 BY THE REV. A. E. EATON, M.A., F.E.8. 



SlPIILURUS .^STIVALTS, Sp. TIOV. 

 cf . Imago of similar appearance and dimensions to .9. lacustris, Etn., but 

 with the darker colouring deeper in tint, and the lighter markings flavescent rather 

 than ochi'aceous. In the abdomen, at the posterior angles of the dorsum in most 

 of the segments, the extreme edge of the integument is flavescent for a short space 

 inwards, and a still shorter space for- 

 wards ; and at the base of each dorsal 

 segment,each of the lateral small trian- 

 gular flavescent spaces emits an exiguous 

 offset to the lateral margin, so that the f 

 more or less acute recurrent streaks of / 

 the darker colour tapering forwards 

 from the posterior border arc not ex- 

 tended to the base. Wing neuration 

 stronger or blacker on the whole than 

 in the afore-named species, except the 

 roots of the hind-wings, and the 

 thickened base of the costa, together 

 witli the cross-vein continued there- 

 from in the fore-wings. Fore legs 

 piceous : hinder legs bistre-brown. 

 Pleura dilated and produced posteriorly 

 into acuminate points in tlic penulti- 

 mate segment. Lengtii of fore-wing, 

 14 ; setfB, 22 mm. 



Hah. : Sorum, Norway, 10th of July. Plentiful at the riverside 

 laufling-stase, between 10 and 11 p.m., when both sexes were 

 obtained. 



Details figured :—\i.mira]. view, without contour, of the <? imaginal forceps 

 and penultimate segment, with penes in position, visible through the substance of 



A.fl.Ci.v 



