18t»5.] Ill 



Pseudo-Neueopteea. 

 PSOCJD.E. 



Psoctts nebulosHs, Stepli. (abundant in a small fii- plantation). Philotarsus 

 flaviceps, Steph. Ccscilius obsoletus, Steph. ? (one only). 

 EPKEJIERID^. 



Ephemera danica, Miill. (a few). E phemerell a ignita, Poda (one). Baelis 

 rhodani, Pict. (a few). 



Alf — BuLLAT, on the Moselle. 



Tbichopteea. 

 Goer a pilosa, F. 



Leptoeerus cinereus. Curt. Homilia leucophcea, Ramb. (common). 



Hydropsyche guttata, Pict. Holocentropus piclcornis, Stepli. Tinodes lOCEneri, 



L. Pst/chomyia pusilla,¥. Chiinarrha marginata,\j. 



Planipennia. 

 Chrysopa t-puiictata, Wesm. ; Ch. flavifrons, Brauer ; Ch, vulgaris, Schnd. 

 (all sparingly). 



Pseudo-Neueoptera. 

 PERLIDu^. 



Perla Selysii, Pict., var. n. mosellcB, vide infra. 

 EPREMERID^. 



Polymitarcys virgo, 01. (in vast profusion in the spiders' webs on the bridge, 

 mostly living ; the flight is nocturnal ; they, like most other EpJiemeridce, appear to 

 be despised by tlie spiders). Ephemera lineata, Eaton (one ? subimago). Choro- 

 ierpes Picteti, Eaton (sparingly in spiders' webs). Ccenis halterata, F. (abundant 

 in spiders' webs). Cloeon rufalum, Miill. (a few). Ecdyurus flumiuum, Pict. (a 

 few). 

 OBONATA. 



Orthetrum cancellatum, L. (not common in swampy ground). 



Platycnemis pennipes. Pall, (common). Enallagma cyathigerum, Charp. (a 

 few). Ischnura elegans, V. d. L. (tolerably common). Agrion puella, L. (a few) ; 

 A. Lindenii, Selys (this usually local species was very common, and far outnumbered 

 all the other Agrionina put together, but the ? was scarce). Sympycna fusea, 

 V. d. L. (two immature ? ). 



Peela Selysii, Pict., var. ii. mosellj;. 

 y . Differs apparently from the type-form in its less robust body, and generally 

 darker colour. The whole upper surface of the body is black, save that the abdomen 

 has a slight greyish tinge. Under-side of head yellowish, with a large shining black 

 basal spot ; abdomen beneath with a broad, median, yellowish, longitudinal band 

 (sometimes obsolete) ; egg-valve probably not differing from that of the type-form. 

 Caudal setae having the joints furnished with long, verticillate, yellowish hairs, as in 

 the type-form ; these setae ai'e darker in colour, almost greyish-black, with the base 

 of each joint deeper black, so that the annulated appearance, which is somewhat 

 conspicuous in the type-form, is here only visible in certain lights. Legs greyish, 

 femora and tibiae indistinctly lined with blackish, and blackish at the tips, the tarsi 

 wholly blackish. Wings apparently narrower, and with the apex more produced 

 than in the type-form (the pale costal margin similar in both), more transparent, 

 and with a decided pale smoky tinge. Expanse, 33 — 37 mm. 



