LiBELLULA is one of the most extensive genera of this magnifi- 

 cent family of insects, which may be divided into 2 sections. 



1. Abdomen dilated and more or less depressed. 



1. depressa Linn. — Don. v. S. pi. S\ S • 'v. 1. pi. 24 ? . 

 Marshy places and ponds everywhere, from April to Aug. 



2. quadrimaculata Linn. — Don. 12. 407. — Sam.pl. I.f. 1. — 

 prasnubila Newm. var. 



Ponds and woods, middle of May to August, Middlemarsh, 

 Parley, New Forest, Oxford, Whittlesea and Meldon Park, 

 Mr. Dale; also at Epping. 



3. bimaculata Charp. ? Step. June, Whittlesea Mere. 



4. conspurcata Fab. — 4-rasciata Don. 12. 425. 



Hedges, lanes, &c., from middle of May to the middle of 

 July, Parley, Glanville's Wootton and Newnham, Bedford- 

 shire, Mr. Dale ; Sprowston near Norwich and Deptford. 



5. cancellata Linn. — Don. 14. 472. — Int. to Ent. pi. S.f. 5. ? . 

 Croydon canal, Peckham, Horning and Fakenham, Nor- 

 folk, Whittlesea Mere, Abbey Meadows, Kilburn, end of 

 June to middle of August, J. C. 



6. Sparshalli Dale's Mss. Taken at Horning in 1823 by the 

 late Mr. J. Sparshall ; it is very similar to a Chinese species. 



2. Abdomen triquetrous^ sublinear or slightly clavatc. 



7. coerulescens 2^. — Donovan i L^fl'. — biguttata Z)ow.' 1 3.449 c?. 

 May to September, Charmouth, Portland, Empole, Parley, 



Enborne, Gamlingay bogs and Isle of Man, Mr. Dale ; New 

 Forest and Black-gang-chine, J. C. 



8. vulgata Linn. — Don. 10, 337. 1. 



Ponds and ditches from June to 19th Nov. everywhere. 



9. Veronensis Charp. Taken by Mr. Harrison of Hull. 



10. flaveolata Linn. — Schajf. Icon. t. ^^.f. \. 



Taken by Mr. Lyell at Kinnordy in Forfarshire, and by 

 Mr. Doubleday last year at Epping in abundance. 



11. angustipennis Step. III. June, near London. 



12. Roeselii Curt. — Roesel, 2. /;/. 8, _/] 4. — basalis Step. ?? 

 rufostigma Neiso. var. Whittlesea Mere, Mr. Bentley. 



13. Scotica Don. 15. 523. — nigra Va7i. Lin. — pallidistigma 

 Step. var. 



June to Nov. abundant on Parley Heath ; Isle of Arran. 



14. rubicunda Linn. — Curt. Biit. Ent.pl. 712. c?. 



This line insect was discovered last year, about deep pools 

 of water on Thorne moor near Dorchester, by Mr. Beckett ; 

 Mr. Dale found it there in abundance the middle of July, but 

 it was less common in August ; Mr. Harrison also took it 

 near Glandford Brigg, Lincolnshire. For a fine series I am 

 indebted to the Rev. F. O. Morris and T. C. Heysham, Esq., 

 who took them in the North of England. 



The plant is Carer digitata, Fingered Carex, from Leigh 

 wood, conmumicated by Mr. Tliwaites. 



