British Species of ' May-jlies of Anglers. 213 



viated oblique lines on the inferior margin and another parallel to the pos- 

 terior margin, the edge of which is spotted brown and yellow ; on the 

 centre is a minute white dot : inferior wings pale fuscous, darkest towards 

 the apex. 



Gen. 751. Philopotamus Lea. 



A. Antennas rather short and stout. 



4. Irimaculatus Curt. 



6 lines : fuscous with an ochreous or coppery tinge ; similar to P. variegatus 

 Fab., but the superior wings are more regularly sprinkled with ochreous 

 dots. 



5. conspersus Curt. 



12 lines : pale fuscous ; palpi, legs and antennas tawny, the latter annulated 

 with white ; superior wings thickly and minutely spotted with ochre, leaving 

 brown markings on the costa and inferior margin, and two forked ones on 

 the oisc, the margin spotted yellow and brown from the stigma to the pos- 

 terior angle. 



6. dorsal is Curt. 



12 lines : ochreous ; superior wings obscurely clouded and freckled ; stigma 

 pale brown, inferior margin fuscous, leaving three pale spots, the anal one 

 minute, forming when the wings are closed three suborbieular spots down 

 the back ; the first pair of spurs below the middle in both pair of legs. 



6 b . longipennis Curt. 



13 to 14 lines: pale dirty ochre ; antennae and legs fulvous, the former 

 short and annulated ; superior wings long, narrow and lanceolate, fuscous 

 with innumerable yellow dots ; stigma long and fuscous, bearing three 

 yellow spots ; lirst pair of spurs on intermediate tibiae considerably below 

 the middle. 



B. Antennae long and slender. 



7. instabilis Curt. — maculatus Dnn^? pi. 54S, 2. 



Similar to Donovan's figure; but as 1 believe Olivier's P. mactdata is differ- 

 ent, it became necessary to give another name to our insect. The inter- 

 mediate tarsi are dilated. 



8. pellncidulus Curt. 



15 lines: head, thorax and abdomen blackish; antennae very long, ochre- 

 ous, spotted fuscous j wings semitransparent, superior obscurely freckled 

 with pale fuscous and ochre, margin spotted with ochre from the stigma to 

 the posterior angle, and there are longer ochre spots on the inferior mar- 

 gin ; legs ochreous, intermediate tarsi dilated. 



10. lanceolatns Curl. 

 13 lines: wings fuscous, superior slightly hooked, clothed with shining 

 ochreous pubescence, slightly freckled, the posterior margin slightly spotted ; 

 intermediate tarsi but little dilated. 



9. angustipennia Curt. 



10 to 13 lines : antenna; slightly serrated and annulated ; head, thorax and 

 abdomen blackish ; wings fuscous, superior with an ochreous tint, a large 

 brown trigonate stigma and an ochreous oblong spot before, and another 

 round one at the posterior angle ; intermediate tibiae and tarsi compressed 

 and dilated in the female ; legs ochreous, darker at the base. 



<j u . lulvipes Curl. 

 13 lines: black; antennae annulated with fulvous, neck clothed with gri- 



