HYDROPSYCHID.E. — PHILOPOTAMUS. 169 



Larva with the head fulvescent, dotted with black, the central spots disposed 



in a circle, the rest of the body pale fleshy-yellow. 



Apparently rare near London, but not uncommon in Devonshire, 

 in July. 



Genus XII.— PHILOPOTAMUS, Leach MSS. 



Antennae nearly as long as the wings, slender, with a tuft of hair at the base : 

 maxillary palpi very long, the terminal joint considerably longer than the 

 others united, and attenuated to the tip : head moderate : eyes large, sub- 

 globose : thorax stout : wings elongate-elliptic ; anterior with four indistinct 

 transverse nervures, placed nearly in a line with the stigma, and another 

 situated obliquely about the middle of the costa; posterior small, very 

 slightly folded: abdomen shortish, broad, depressed, acute at the apex, 

 which is furnished with horny appendages in the males : legs moderately 

 long : anterior tibiae armed with a pair of longish spurs at the tip, interme- 

 diate and posterior each with a long "pair at the tip, the former with a 

 second pair above the middle, and the latter with a pair below the middle : 

 tarsi moderate, middle pair not dilated in the females. 



The pretty insects contained in this genus differ from the following 

 in having a distinct transverse nervure, placed rather obliquely, about 

 the middle of the costa, the other transverse nervures are situated 

 in nearly a straight line, somewhat parallel with the hinder margin, 

 and arising from the stigma ; the anterior wings are rather acutely- 

 elliptic, very prettily maculated with yellow or tawny, on a brown 

 ground; the posterior ones are small and but little folded; the 

 anterior tibijE are destitute of a medial spur. 



Sp. 1. ScOpulorum. Niger, pedibus antennisque fulvis, his hrunneo annulatis, 

 alls anticis hrunneis luteo-maculatis, posticis fuscescentibus brunneo-macidatis, 

 (Long. Corp. 4 — 5^ lin.; Exp. Alar. 9 — 15 lin.) 



Phi. Scopulorum. Leach MSS.—Stepk. Catal. 317. No. 3599. 



Black: palpi and antennae tawny, the latter annulated with brown; forehead 

 with a dense griseous pile ; anterior wings brown, irregularly spotted with 

 round pale luteous spots of various sizes, largest on the costa; posterior 

 wings fuscescent, with obscure luteous and brownish spots on the margins ; 

 legs pale tawny. 



Extensively distributed throughout the mountainous districts of 

 England, Scotland, and Ireland; found but rarely in the lower 

 parts of the country : it occurs in June. 



Sp. 2. variegatus. Niger, antennis pedibusque fulvescentibtis, alts anticts 

 Mandibulata, ¥ol. VI., Sept. 30th, 18-36. y 



