SYNOPSIS OF THE BRITISH PHRYGANIDiE. 67 



Ramus thyrifer forked in all the wings only in the females ; 

 spurs 2, 4, 4. 



Case conical, slightly curved, composed of small stones. 



55. Odontocerus albicornis, Scop. ; Steph. 111. 192, 1 ; 

 O. maculipennis, Curt. Phil. Mag. 214 ; Steph. III. 

 193, 2. 



Brown; head and thorax clothed with whitish hairs; 

 antennae testaceous ; wings grey, the anterior clothed 

 with yellowish-white hairs, with a silky lustre ; veins 

 margined with brown. 



Length 7 lin. ; exp. 11 lin. 



Hab. London, Cheltenham, Devonshire, Carlisle, Scot- 

 land, Killarney, Norfolk and New Forest, in June 

 and July ; common. 



Genus Molanna, Curtis. 

 Nais, Rambur. 



Antennae as long as the wings, rather stout, the basal 

 joint thickest, shorter than the head ; maxillary palpi densely 

 clothed with long hair, the joints of equal thickness, the first 

 two short ; anterior wings narrow, scarcely dilated towards 

 the rounded apex, anterior margin straight ; posterior wing3 

 folded; spurs 2, 4, 4. In the closed state the wings curl 

 into a tube round the body, like the Nemource. 



Case very peculiar, composed of fine sand, cylindrical, 

 straight, with a broad, flat wing attached to it on each side. 

 These have essentially the form of a thin oval shield, to the 

 lower surface of which a cylinder is affixed. a Theca plana 

 utrinque in tenuem marginem seu limbrum procurrente, velut 

 alas quasdam, theca planiore et compressiore quam in supe- 

 riors" (Willughby.) 



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