46 lJ"'y. 



NOTES ON THE ENTOMOLOaY OF PORTUGAL. 



YIU.—TRICJIOFTERA. 



BY R. McLACHLAN, F.R.B., &c. 



In October, 1880 (c/. Eiit. Mo. Mag., xvii, pp. 103—108), I pub- 

 lished a List of the Pseudo-Neuroptera in part, and of the ISfeuroptera- 

 Planipennia, collected by my friend the Rev. A. E. Eaton during his 

 tour in Portugal in 1880. It was then stated that the Trichoptera 

 were so rich in new forms that it might be impossible for them tc 

 appear in this series of notes in the first instance. I did not thet 

 wish to indicate a long series of species with no specific names, and ] 

 have a repugnance to the publication of names without descriptions 

 The time has arrived, however, when there is no necessity for eithe] 

 of these scruples, because all the new species appear in the " Firsi 

 Additional Supplement " to my Kevision and Synopsis of Europear 

 TricJwpfera, recently published. 



The Triclwptera certainly form the most important part of th<i 

 collections made by Mr. Eaton during his tour. He collected over 6ti 

 species, of which 27 were new (excluding a few not described fol 

 want of sufficient materials), and others very imperfectly known 

 And all this was the work of an Englishman in little more than tw( 

 months, travelling alone in a country of which the language of th( 

 inhabitants was strange to him. The species collected can only forn' 

 a tithe of those that exist. 



A remarkable feature is the fact that only one species of LimnO' 

 philidw was found. I think this may be accounted for in two ways 

 Firstly, Mr. Eaton probably avoided (as unhealthy) the marshy disii 

 tricts in which many species of this Family delight ; secondly, it wai 

 probably too early in the year for those species of it that inhabit thi 

 high mountains. As some proof of this latter, it may be stated tha 

 he saw the larvae of some species in great abundance in a lake in tW 

 Estrella, at an elevation of over 5000 feet. Moreover, the Family i 

 essentially Palaearctic and Nearctic, scarcely occurring within tbl 

 northern tropical region (re-appearing in a remarkable manner, i 

 small numbers in Chili and adjoining districts). Over 60 species an 

 known to inhabit Finland, over 50 have been found in Britain. Bii 

 a gradual diminution occurs as m'c go south, excepting in the Alps c 

 Central Europe, where altitude supplies the deficiency in conditiop 

 that would otherwise be occasioned by latitude. i 



Unless we should witness the unexpected advent of a nativ 



