THE ENTOMOLOGIST 



Vol. XLIV.] MAECH, 1911. [No. 574 



ON TMNIOPTERYX PUT AT A, Newman (PLECOPTERA), 

 WITH NOTES ON OTHER SPECIES OF THE 

 GENUS. 



By Kenneth J. Morton, F.E.S. 

 (Plates II. & III.) 



In the Trans. Ent. Soc. Lond. 1896, p. 58, when describing 

 Tceniopterijx risi, I made some remarks on T. trifasciata, Pict., 

 partly based on material from Scotland in my own collection, 

 and partly on Continental specimens received for examination 

 from Mr. McLachlan. The species of the genus were, however, 

 at that time very imperfectly understood, and in the light of 

 what is now known it is almost certain that what I had then 

 before me as T. trifasciata did not all belong to the same species. 

 The material is not now available for re-examination. Quite a 

 number of species belonging to the genus have since been satis- 

 factorily separated. At the same time, I am not sure that 

 unanimity of opinion yet prevails as to what constitutes the 

 true T. trifasciata of Pictet, 



In the paper above-mentioned, the insects from Scotland 

 were certainly what I then regarded as typical T. trifasciata. 

 This determination was, I admit, to a great extent due to the 

 fact that both McLachlan (' Catalogue of British Neuroptera,' 

 1870) and Albarda (* Catalogue des Nevropteres observees dans 

 les Pays Bas,' &c., 1889) had referred Newman's Nemoura putata 

 (the type of which was from Scotland) to T. trifasciata, Pict. 

 Klapalek, on the other hand, has since put forward the view that 

 the true T. trifasciata is to be found in an insect which he took 

 at Vienna, in which the wings of the male are very much more 

 reduced. I have not seen the female of this Vienna insect, but 

 the male is a very different thing from the Scottish representa- 

 tive of the trifasciata group. Certainly, on the whole, Klapjxlek's 

 insect comes nearer to Pictet's figure than does the Scottish 

 insect, to which, as far as I am able to judge at present, the 



ENTOM. — MARCH, 1911. G 



