233 Mr. E. Doubleday on some new Diurnal Lepidoj^tera.' 



with both plants in several localities j in fact, both appear to be 

 plentiful in situations suitable for them. 



I am J yours, &c., 



September 1, 1845. ThoMAS MooRE. 



P.S. Mr. Babington has just favoured me with the following 

 specific characters for these two plants : — 



G. fluitans (R. Br.) ; panicle subsecund, slightly branched, 

 very long ; branches nearly simple, roughish, divaricated whilst 

 in flower J spikelets linear, of 7 — 12 flowers; outer pale nearly 

 thrice as long as broad, blunt ; anthers about jive times as long as 

 broad [purple) ; sheaths compressed. Leaves pale green, acute. 

 Ligule elongate. Outer pale blunt, with a triangular central 

 point. Dry anthers pale yellow. — Poa fluitans, var. subspicata, 

 ParnelFs British Grasses, pi. 95. This plant is considered as the 

 true Festuca fluitans of Linnaeus by the Swedish botanists; it was 

 originally published under that name in ' Linn. Fl. Suec.^ 



G. plicata (Fries) ; panicle compound ; branches compound, 

 nearly smooth, divaricated whilst in flower ; spikelets linear, of 

 7 — 20 flowers ; outer pale oval, twice as long as broad ; apex ob- 

 tuse-angled, with three nearly equal teeth ; anthers thrice as long 

 as broad {yellow) ; sheaths compressed. Resembling G. fluitans. 

 Ligule shorter. Dry anthers fuscous. Leaves glaucous, bluntish. 

 — G. plicata, Fries, Nov. Fl. Suec. Mant. ii. 6. F. fluitans, Eng. 

 Bot. pi. 1520. Poa fluitans, Parn. pi. 45 (not good). Mr. Ba- 

 bington has seen authentic specimens of this plant, from Fries 

 himself, which agree with that found commonly in Britain. 



XXVI. — Descriptions of new or imperfectly described Diurnal 

 Lepidoptera. By Edward Doubleday, Esq., Assistant in the 

 Zoological Department of the British Museum, F.L.S. &c. 



[Continued from p. 182.] 



Fam. NYMPHALID^. 

 Genus Diadema, Boisd. 



Diadema Nama, Boisd. MSS. D. alls anticis sinuatis nigris, posticis 

 castaneis, omnibus albo lineatis maculatisque. Exp. alar. 3 unc. 

 6 lin. vel 90 millim. 



Hab. Sylhet, &c. 



Anterior wings with the outer margin sinuate, slightly glossed 

 with purplish, especially towards the apex ; with numerous semi- 

 transparent markings of a bluish white, viz. a longitudinal vitta 

 in the cell at the base, followed by two spots, of which the outer 

 one is triangular ; above these three indistinct spots, the middle 

 one sometimes wanting ; between the lower median nervule and 



