108 fMay, 



D. mortoni. The same form has been fouud in Germany. The form 

 to which the name tnicrocephala was applied has now been determined 

 as dispar, Kambur, while microcephala, Pict., is the name reserved for 

 a form in whie-h the (^ is full-winged. 



The other British species included by Klapalek in Dictyopteryx is 

 quite different, and has been placed by him in a separate sub-genus, 

 Dictyopterygella. The species is D. recta, Kempny, which has been 

 in British collections for the last forty years as a form of Isogenus 

 nubecula. It is a most abundant insect at many Highland lakes, and 

 is well known to most British Neuropterists. 



Isogenus nubecula, Newm. — Common at some of the great 

 European rivers, but I have never been able to obtain it from this 

 country, although McLachlan had no doubt about its occurrence. 



Ferla. — This genus remains represented by three species: maxima, 

 marijinaia, and cephalotes. 8ome doubt has been thrown on the exist- 

 ence of the second named species. jMcLachlan, however, knew it 

 well, and was satisfied that he had seen it from Britain. It has never 

 come my way. 



Ghloroperla. — Perhaps this genus is not yet thoroughly under- 

 stood. But in the meantime qranimatica is the onl}' species that can 

 be spoken of with certainty. There is no evidence that C. rivulorum 

 occurs with us. 



Isopteryx. — /. burmeisteri and apicalis as understood by Con- 

 tinental authors have not come before me from this country, and they 

 are very doubtfully British. The two species that can be included 

 with certainty are iripunctata. Scop., and torrentium, Pict. 



Capnia holds C. nigra, Pict., and atra, Morton. ^. species 

 recently described by Klapalek as Capnia vidua has the wings rather 

 shortened in the ? , and he has suggested that the Braemar specimens 

 referred to by me (Trans. Ent. Soc. Lond., 1896, p. 59) may belong 

 to vidua. This subject requires further investigation ; but the 

 material is not now accessible, and it would be also necessary to 

 examine males. 



Tceniopteryx. — The species are nebulosa, Linn., trifasciata, Pict., 

 and risi, Morton. It is necessary to mention that our trifasciata is 

 somewhat different from the Continental species called by that name 

 by Klapalek, who also refers nebulosa to a separate genus, Nephelop- 

 teryx. 



