154 Rev. A. E. Haton’s Monograph 
pallidioribus; posteriores sub-olivacei, vel virescenti- 
olivacel, tarsis atrescentibus. Abdomen sub-olivaceum, 
vel pallide virescenti-griseum, apice lutescenti; segmen- 
torum apices, strigeeque laterales ex his oblique producte, 
atri ; seepe quoque series centralis est femine strigarum 
brevium nigricantium: venter maculatus similiter ac in 
Tab. VI., fig. 26b, effingitur. Sete atre, piceze apices 
versus. Forceps corvinus. Processus ventralis penul- 
timi segmentorum integer. 
Long. corp. ¢ 11-12, 9 12-14; exp. al. ¢ 13-17, 
? 13-15; set. Gg 22-23, subim. 14-20, 9? 20, subim. 
15 mm. 
Hab.—Kngland. May, June, and July or August. In 
rivers. 
Heptagenia montana. 
Baetis montana, Pict. 1843-5. 
Imago, v. s. ¢. “Caput nigrum, oculis cyaneis. 
Prothorax supra rufescens, macula in medio nigri: meso- 
et meta-thoraces supraatri. Alee vitrine, nervis tenuibus 
nigris; apex arez marginalis antice fuscescens. Pedum 
antici nigri: posteriores fulvyi. Abdomen supra griseo- 
fuscum (in figuri ochraceo-olivaceum, juncturis et strigis 
lateralibus obliquis obscuris), setis fuscis ” (Pict.). 
Long. corp. ¢ 13, set. 30, exp. al. 28 mm. 
Hab.—Near a small stream from Brevent, above Cha- 
mounix (Pict.); and on the Austrian mountains (Brauer) . 
Heptagenia Bellieri. 
Baetis Bellierit, Hag. 1860. 
Imago, v.s.s. 9%. Ale vitrine, lacteo tincte, nervis 
piceis; apex areee marginalis paulo infuscatus. Pedum 
antici picei; posteriores testacei, tarsis fuscis. Seta 
piceze. Processus ventralis penultimi segmentorum in- 
teger. 
Long. al. 14 mm. 
Hab.—Sicily (Hag.). According to Dr. Hagen, this 
species somewhat resembles the preceding one in colour. 
