256 November, 



Leuctra so far as they are at present known to me. There are six 

 species, as follows: — 



1. L. geniculata, Stephens. — The largest species, easily known from the 

 verticillate hairs on the antennae, a character which it has in common with L. 

 Braueri, Kempny, a species not yet known as British. L. geniculata has a wide 

 distribution in these Islands, and frequents standing as well as slowly running 

 waters. It does not as a rule appear before the month of August. 



2. L. albida, Kempny. — A summer insect, frequenting rapid streams in hilly 

 districts ; known to mo from Perthshire and Merionethshire, and no doubt general 

 in suitable localities. 



3. L. Klapaleki, Kempny. —Allied to the foregoing and appearing later, 

 usually about the beginning of August. Ranks next to geniculata in size. Known 

 from many Scotch localities, and I think also from Devonshire (Briggs). 



4. L. hippopus, Kempny. — Wide spread and appearing very early, March or 

 April. 



5. L. Handlirschi, Kempny. — Kempny described two species, Handlirschi 

 and inermis, which he afterwards concluded were mere races or forms of each other. 

 In this I believe he is right. Some Highland examples come near Handlirschi ; 

 inermis is a common Scotch insect, and is also found in Wales. In some localities 

 appears along with or soon after hippopus. 



6. L. nigra, Klap. (01., Pict. ?). — The least known species to me. I took a 

 single male in Arran many years ago, although it has only now been determined, 

 and this season I have found single examples in Perthshire and Lanarkshire. I 

 believe it is attached to swampy spots where there are springs. It may be looked 

 for early in May. 



At the outset of my studies iu the genus Dr. Kempny very kindly 

 looked over a quantity of material which I had collected in formalin, 

 and since then, by his and Professor Klapalek's courtesy, I have 

 been put in possession of practically all the recognised European 

 species. Those Entomologists who desire to know more about these 

 insects should refer to Kempny's papers, "Zur Kenntniss der Plec- 

 opteren " (Verhandl. der K. K. zool.-bot. Ges. Wieu, vols. 48-49, 

 1898-99). 



13, Blackford Road, Edinburgh : 

 September, 1902. 



NOTES ON THE OCCURRENCE, AT HASTINGS, OF THE LARVAE 

 OP CLEODORA CYTISELLA, Curt. 



BY EDWAKD CONNOLD, T.E.S. 



About six years ago my attention was first drawn to the curled 

 pinnules of Pteris cupiilina, L., while searching for the little, rolled, 

 hard, purple-coloured galls on the secondary pinna? of the same plant, 

 which are caused by the gall-gnat Cecidomyia pteridis, Mull. In each 



