90 Rey. A. E. Eaton’s Monograph 
Series 5. Sp. typica, L. fusca. 
Nympha reptans. Segmentorum abdominis 1-7 brau- 
chifera; laminz branchiales simplices, pinnati-partite 
quidem, sed peene filiforme-dissectee. Palpi maxillares 
tri-articulati ; superioris primus articulorum largus ceter- 
isque conjunctim longior, secundus tertio subzequalis ; 
inferioris ultimus articulorum penultimo longior. 
Imago. Posteriorum alarum margo costalis valde ex- 
cisus. Tarsorum posteriores quinque-articulati ; articulo- 
rum primus obsolescens, tibiz adnatus, brevis, secundus 
longior, tertius et quartus secundo sensim breviores ; 
ungues dissimiles. Artus forcipis primus articulorum 
aliis longitudine subzequalis. 
Leptophlebia fusca. 
(Ala antica, Pl. II. fig. 2c. Genitalia maris, Pl. V. fig. 
2,2a. Ala postica, fig. 2b.) 
Ephemera fusca, Curt. 1834. H. minor & Baetis cin- 
gulata, Ste. 1835-6. Potamanthus brunneus, fuscus, minor 
& Cloe cingulata, Pict. 1843-5. Cloeon cingulata, Walk. 
1853. 
Subimago, v. v.s. Als cinerex, nervis piceis. Tho- 
rax piceus: tibiarum antic subfuliginose, posteriores 
cervine. 
Imago, v.v.s. 6. Oculi saturate fuliginosi. Tergum 
thoracis aterrimum politum. Alze vitrine, nervis fuscis. 
Pedes brunneo-olivacei, femoribus et tibis anticis piceis. 
Abdomen fusco-piceum, juncturis flavescentibus, setis et 
forcipe fuscis (in s. 8. saturate fulvis). 
@ mari similis, tarsis anticis pallidis. Setze fuliginose, 
juncturis vix saturatioribus. Processus ventralis penul- 
timi segmentorum late excisus. 
Long. corp. ¢ 5-7, 26-7; al. d 9 6-7; set. 6 8 & 12 
-11 & 12, @ 8-9, subim. 6 mm. 
Hab.—Great Britain; Interlaken; Mt. Saleve (Pict.). 
In brooks and rivers. The end of May to August. 
A pair of branchial plates is omitted from Professor 
Pictet’s figure of the nymph, which i is, in other respects, 
a good representation of it. 
