1389.] 273 



Specimens of Monalonion humerale, Walker, from Sikkim have 

 been received at the British Museum from Mr. E. T. Atkinson, and 

 with them one immature example of a Helopeltis. This Helopeltis I 

 believed to be H. theivora, ? , and it has the horn on the scutellum 

 curved as in that species, and slightly ernarginate at the apex (viewed 

 laterally). So far as I can judge of the colour, it does not differ 

 materially from H. theivora ; the scutellar horn is brown, with a ring 

 at the middle and a spot on each side of the base, yellow. If Dr. 

 Bergroth had not stated that his example was a female, I should have 

 taken it to be the male of this species, which would have the scutellar 

 horn shorter and less curved. 



According to Dr. Trimen, the specimens from Ceylon referred to 

 in my paper as H. Antonii were from cacao and not from tea ; my 

 note, T. E. S., 1888, p. 207. 



The unfortunate transposition of the reference numbers 4 and' 5 

 in my paper is corrected in the "errata" (introd., p. viii) ; the 

 references in the " explanation of the plate " are correct. — Chas. 

 0. Wateehouse : March 18th, 1889.] 



A^SCSNA BOREALIS, ZETT. 

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



This remains one of the least known among the European Dragon- 

 flies. Its distribution is entirely boreal or high alpine according to 

 latitude. In this country I am not sure that it has been noticed since 

 I took a few specimens at Bannoch in the beginning of June, 1865 

 (cf., Ent. Mo. Mag., vol. ii, p. 117). 



A few days ago my friend and colleague of our local ("West Kent) 

 Natural History Society, Mr. Hainworth, gave me a pair ( $ $ ) of 

 JE. borealis captured at Lulea, Sweden, near the head of the Gulf of 

 Bothnia, by his relative, Mr. "W. J. Rose, the civil engineer who has 

 charge of the construction of the Bailway between Lulea and the 

 iron mines of Gellivara. In the course of my examination of these 

 specimens, and of others from Scotland, I became aware of the ex- 

 istence of a character in the superior appendages of the £ that I do 

 not find alluded to in any description. Near the apex of the median 

 carina of these appendages there are five or six teeth or crenulations, 

 somewhat after the style seen in JE. crenata, but in this latter the 

 teeth are larger and more distinct. Upon referring this matter to 

 my friend Baron de Selys, he found precisely the same character in 



