1887.] 



1881)].— Nymph locally abundant in the main stream below Cintra, in April ; 

 nymph and fly common near Aldea daa Neuves, Almodovar, the nymph harbouring 

 under stones at the outflow of pools in the stream, where its identification was 

 effected by means of the sub-imago in the afternoon ; also common at fords crossed 

 ill the sierra between Sao Marcos da Serra and Almodovar. 



Thraulus bellus, Etn. — Nymph local in the main stream below Cintra, residing 

 under stones on fine gravel and sand near the edge, where the current is gentle, at 

 the end of April. Fly found at the same place, in a spider's web, early in the 

 morning, a month later. 



Rabrophlebia nervulosa, Etn. — Cintra, at the same stream as the preceding 

 species, and also on the hill-top outside the palace grounds ; also at similar altitudes 

 near Silves and Ponte de Morcellos, and at higher elevations on Foia, the Estrella, 

 and near Villa Keal, Traz-os-Montes. 



CaUiarcys humilis, Etn. — Fly common on the northern slopes of Foia, at 



altitudes a little over 2000 feet, at the end of May, thronging in the shelter of 



bushes, and near the ground ; captured also by beating Erica overhanging a stream 



on the Estrella, south of Sabugueiro, at an altitude of 4100 feet, early in June. 



Epkemerella ignita, Poda. — The stream below Cintra, at the end of April. 



Ccenis halterata, F. — Fly captured at the same place aiid time, near a bridge, 



early in the morning. C, sp. ? — Nymph figured in Trans. Linn. Soc. (2) Zool., 



iii, pi. xlii, 3, caught at the same place. 



Baetis binocidatus, L. — Abundant lower down the same stream. B. scamhus, 

 Etn., ?. — A species, which may be this, was abundant at Cintra with the preceding ; 

 eight specimens from Cintra, Salamonde, and Silves stand together in McLach. Mus. 

 B. rJiodani, Pict., ?. — Three ? specimens from Foia may possibly belong to this 

 species : the $ was not observed. B. Bocagii, Etn. — Captured, chiefly in sub-imago, 



along the streamlet between Alcantara and Bemfico, Lisbon. B., sp. ? — Five 



specimens, captured in the early morning in descending the opposite side of the hill 

 above Cea in the Estrella, probably represent an undescribed species ; two other 

 specimens in McLach. Mus. — one from the Estrella, south of Sabugueiro, and the 

 other from Caldas da Monchique, — are likewise of undetermined species. B. pu- 

 mihis, Burm. — Common at Cintra ; single specimens also were caught at Cea, in 

 the Estrella, and near Villa Eeal, Traz-os-Montes. 



Centroptilum liiteolum, Miill. — Captured on the same occasion as Canis. C. 

 pennulatum, Etn., ?.— Two iniagos at Ponte de Morcellos. 



Cloeon dipterum, L. — A ? imago from a hedge in the vineyards under Cintra, 

 by beating, and anotlier in a house at Casevel Eailway Station : the former specimen 

 is lost. C. simile, Etn. — Slow and shallow streamlets at Almodovar, Sao Marcos da 

 Serra, and Silves. C. concinmim, Etn. — In flight, shortly before sunset on June Ist, 

 at the stream near Porcalhota, where the roads meet from Lisbon, Cintra, and Mafra. 

 Siphlurus Havidus, Ed. Pict. {Baetis flavida, Ed. Pict.). ?— Nymphs, very pro- 

 bably, of this species (figured in Trans. Linn. Soc. (2) Zool., iii, pi. L, 2, 3, and 

 20 — 26), were plentiful in a small stream by Sao Barnabe, a hamlet near the sierra 

 south-west of Almodovar : they match Pictet's species in size ; the fly had begun to 

 emerge early in IMay, although none were seen, for a few empty nymph-skins wore 

 clinging to stones in the water a little above the surface. 



