224 [September, 



Witli alongsubgenital plate in the <? . Plate apparently much shorter (only 



di'y specimens compared). 



Viewed fi-om side, apex of upper From same point of view, apes of 



branch of appendages somewhat hook- upper branch of appendages nearly 

 shaped. straight. 



Viewed from side, apex of lower From same aspect, the two prongs are 



branch of appendages has the inferior nearly parallel, 

 prong of fork turned downward. 



It must be admitted that tlie appendages in dry specimens some- 

 times fall down into tbe subgenital plate, and it is then extremely 

 difficult, without detaching and preparing the abdomen, to detect the 

 true structure. And I must also admit that some of the females are 

 most diilicult to place with certainty. This sex should be carefully 

 studied with fresh-killed specimens in hand. 



In this coimtr J pel/ ucidus is decidedly southern in its distribution, 

 and is best known from Dale's locality in Dorset (whence came the 

 few examples I possess) and from Devonshire (Briggs). But both 

 are probably wide spread over the greater part of Europe, and they 

 go far north, both being known from Scandinavia. H. pellncidm has 

 been found in such Alpine localities as the Val Bedretto, but the 

 precise distribution of the two is still imperfectly ascertained. 



EXPLANATION OP FIGUEES. 

 1. — Apex of abdomen of <? H. e/ei/ans from Montpellier, from side. 

 2. — Appendage of S H- elegans {parculus?) from Algeria, from above. 

 3. — Apex of abdomen of ^ II. incuii.s/jicuus, from side. 



4. — Apex of lower branch of appendage of ditto, from side (more enlarged). 

 5. — Apex of abdomen of (? K. pellucidus, from side. 

 6. — Apex of abdomen of ditto, from above. 

 7. — Apex of lower branch of appendage of ditto, from side (more enlarged). 



13, Blackford Eoad, Edinburgh : 

 June 1th, 1901. 



Pyrrhosoma tenellam, Vill., in Merionethshire. — During the past month I 

 collected in Merionethshire, and found amongst other things a good many specimens 

 of that pretty little red dragon-fly, Pyrrhosoma tenellum. As far as I know this is 

 a new locality for the species, and also marks a considerable northern extension of 

 its range. The precise locality is between Barmouth and Dyffryn on boggy ground 

 between the railway and the sea. The existence of these bogs is sorely menaced, 

 but so far the drainage of little spots here and there seems to remain a problem, 

 and in such the bog myrtle still reigns supreme. There is no reason why the insect 

 should not be found in suitable places all round Cardigan Bay. The hopes which 

 the capture of this unexpected species raised were not altogether realized, but the 



