540. 



AGRYPNIA PAGETANA. 



The Yarmouth Grannom or May-fly. 



Order Trichoptera. Fam, Phryganidse. 



Type of the Genus, Agiypnia Pagetana Curt. 

 Agrypnia Curt. 



Antenna as long as the body, inserted in front of the head, be- 

 tween and near to the eyes, comj^osed of numerous sHghtly i)u- 

 bescent joints, the basal one very robust, 2nd slightly cup-shaped, 

 the remainder becoming gradually oblong (1). 

 Labrmn long and tongue -shaped, the sides at the apex a little 

 dilated and ciliated (2). 

 Mandibles minute. 



Maxillce small, with a rounded ciliated internal lobe, and a 

 pointed curved external one. Palpi long, compressed, pubes- 

 cent, pilose and 5-jointed, basal joint short, 2nd and 3rd long, 

 of equal length, 4th and 5th equal but a little shorter, the 

 latter subelliptic (4). 



Labial palpi attached to 2 scajies, pubescent, slightly pilose and 

 triarticulate, basal joint the stoutest, somewhat obconic, 2nd the 

 smallest, but of similar form, 3rd the longest, elongate-ovate (5). 

 Depressed : head broad, transverse-ovate (H) .• eyes lateral, prominent, 

 globose and minutely granulated : ocelli 3 in triangle, remote, large 

 and jjr eminent . Thorax small and suborbicular : postscutellum large 

 and semiovate. Abdomen depressed, long broad and narrowed at the 

 base, loith 8 distinct joints. Wings longer than the body, deflexed 

 when at rest, superior narroiv and sublanceolate , but rounded at the 

 apex (9) ; inferior shorter, folded in repose, both having numerous 

 longitudinal nervures, especially at the apex. Legs, a7iterior the 

 shortest: coxae awe? thighs, middle pair the longest : tibiae, all having 

 a pair of spurs at the apex, anterior short, posterior the longest and 

 a little bent, with a pair of spurs also above the apex (t f), the middle 

 tibice being armed in the same manner (#) : tarsi long and 5-jointed, 

 basal joint long : claws and pulvilli minute (8, afore leg). 



Pagetana Curt. MSS. — Guide, Gen. 747''. 1. 



Pale dull ochreous ; eyes and ocelli brownish ; antennae head 

 and thorax a little more ferruginous, and clothed with ochreous 

 hairs, the latter with an ash-coloured tint, the postscutellum 

 and abdomen dull castaneous with a grey bloom, the base of the 

 segments in the latter dark, the apex ochreous : tips of superior 

 wings slightly fuscous ; inferior transparent iridescent, the tips 

 suffused with ochre, all the nervures dark brownish ochre, ex- 

 cepting a few of the basal ones in the under- wings : legs and 

 underside brighter ochre. 



In Mr. Paget's Cabinet. 



