INSECTS. 
537 
Genus EPHEMERA.— Linnceus. 
Generic Character .—With very short antennae, terminated by 
a seta; upper lip covering the mouth ; mandibles either none or 
very small; palpi very short, and indistinct; tarsi five-jointed. 
Ephemera vulgata — The Common Day-Fly. 
Plate C. fig-. 8. 
Body brown and yellow ; wings brown, with five or six spots 
of a deeper colour; three filaments of the tail greatly longer than 
the wings. Inhabits Europe in lakes and rivers. 
TRIBE III.-PLANIPENNES. 
Tarsi five-jointed, antennae filiform or setaceous, composed 
of many joints; forehead with a rostrum,'or prolonged and nar¬ 
rowed like a beak; lower wings sometimes long and narrow. 
Genus PANORPA. — Latreille. 
Generic Character .—Wings with wide reticulations; antennae 
setaceous; eyes smooth ; palpi four j tarsi ending in two hooks 
and a ball; male having the three last abdominal segments in 
the form of rounded knots, the last largest; female abdomen 
long and pointed. 
Panorpa communis. — The Common Panorpa. 
Plate C. fig. 2. 
Body rather long, wings transparent, elegantly variegated 
with deep brown spots; tail of the male furnished with forceps, 
like a lobster’s claw. Inhabits Europe in meadows. 
TRIBE IV.-PLICIPENNES. 
Destitute of mandibles ; inferior wings broader than the su¬ 
perior ones, and longitudinally folded ; antennte usually long, 
setaceous, and many*jointed; tarsi with five joints; maxillary 
palpi mostly long and setaceous. 
Genus PHRYGANEA.— Latreille. 
Generic Character. —Head small; lower wings large, and 
folded; tarsi five-jointed; mandibles hardly visible ; with long 
setaceous antennas, four setaceous palpi; the anterior ones long 
five-jointed; posterior feet long, legs long and spinous. 
