110 [May, 



not in all these localities, which are Tarbet (Loch Lomond), Inverary 

 (Lochfyne), Oban, Foyersfall." He then goes on to compare the 

 Highlands to the Belgian district of the Ardennes, which is also poor 

 in dragon-flies, and produces, like Scandinavia and Scotland, Cordulia 

 arctica. The other records appear to have been based on specimens 

 seen in the collections of Dr. Greville, Mr. "Wilson, of Edinburgh, 

 and a Mr. Blyth, of Glasgow. I give a list of such species as I have 

 not personally seen from Scotland : — 



i. (?e»ressa, " M us. Dr. Greville." ^^ 7- utx/t -n n -n " 



' ' _ j^. qrandis, " Mus. Dr. Greville. 



L. coerulescens, " Mus. Wilson and ^ ' , j ,< -ht \it-i >) 



C. splendeiis, "Mus. Wilson. 



^ ■ P. pennipes, " I think I am sure 



Zi. flaveola, " Stephens." e ^ • -i. ii • 



•^ ' f of having seen it on the wing 



^. prafensis," Mus. Dr. Greville.^^ ^x » 



^ at Inverary. 



JE. mixta, " In the south." . 7 7 77 u ^t t)i i.i »> 



' A. pulchellum, " Mus. Blyth. 



JE. cyanea, " Mus. Wilson." 



It will be observed that he gives in the list no locality for the 

 last named, although he includes it amongst those that he met with. 



It is quite possible that the specimens from some of these old 

 collections might be traced, but they would not likely be of any 

 scientific value when found. In those days they knew these insects 

 by head mark, not by label. 



Edinburgh : March 3rd, 1900. 



AN EXTEAORDINAEY MELANIC VAEIETY OR ABERRATION OF 

 ENALLAQMA CYATHIOERUM, Chp., <? . 



BY ROBERT McLACHLAN, F.U.S., &c. 



Mr. K. J. Morton recently sent to me for examination a male 

 "Agrion " taken by him in Glen Lochay, Perthshire, Scotland, in July, 

 1898, which he considered a condition of E. cyathigerum, but very ex- 

 traordinary. There can be no donbt that he is right ; but the 

 individual is so extremely aberrant that I think it well to give an 

 account of it, and the descriptive notes will be better understood if 

 read in connection with the accompanying figures (drawn for me by 

 Mr. Lucas). The male parts agree precisely with those of cyathigerum. 



Head : the "postocular" blue spots are very small, and the blue line between 

 them very short and fine. 



Frothorax : the two usual blue spots above (one on each side) are much re- 

 duced and scarcely visible ; the narrow blue posterior margin is interrupted with 

 black. 



