114 Rey. A. HE. Eaton’s Monograph 
bus dorsalibus, subtus strigis atris duabus, atque junc- 
turis virescenti-albis; cetera fusco-picea, Juncturis 
flavis. Sets rubido-albz, juncturis obscuris. Forceps 
fumatus. 
? mari simillima; secundo articulorum antennalium 
fere omnino rubiginoso, vertice capitis inter ocellos 
piceo; abdomine vel luteo- vel rufo-piceo, juncturis 
ochraceis, setisque fuliginosis. 
Long. corp. ¢ 7, 2 8; al. 6 6-7, 9 8; set. g 11-13, 
subim. 8°5; set. 9 8-10, subim. 7°5 mm. 
Hab.—The river Kennet near Reading, Berkshire; in 
October. 
Baetis Rhodani. 
(Forceps et ala postica, Pl. V. fig. 20, 20a.) 
Cloe Rhodani, Pict. 1848-5; Cloeon Rhodani, Walk. 
1853. Cloe maderensis, Hag. 1865. 
Imago, v. v.s.  &.Oculi turbinati lateritio-fuliginosi. 
Thoracis tergum aterrimum politum. Ale vitree, nervis 
vix fuscis. Pedum antici tibiis tarsisque nigricantibus ; 
posteriores pallidiores, femoribus saturate virescenti- 
griseis vel ‘pallide olivaceis, et tarsis vel atris vel nigri- 
cantibus. Dorsum abdominis fusco-virescenti-griseum, 
juncturis ochraceis vel canis, et tribus segmentorum 
apicalium saturatioribus; subtus saturate virescenti-gri- 
seum, segmentis singulis seepe strigis brevibus divergen- 
tibus prope bases, punctisque sequentibus duobus, nigri- 
cantibus. Sete virescenti-grisee, juncturis fuliginosis 
vel rubiginosis. 
Var. ¢ im. v. v. s. Oculi turbinati carneo-hepati- 
colorati ; inferiores saturate virescenti-grisei. 'Thoracis 
tergum luteum, postice nigro maculatum. Pedes cretacei, 
unguibus atris; antici gamboso tincti, tarsis fumatis. 
Ale vitrine, nervis virescenti-griseis, subcostis radiisque 
bases versus atris. Abdomen album, quatuor segmen- 
torum apicalium luteis; segmenta pallida, apicibus luteo 
marginatis, marginibus ad latera antice productis. For- 
ceps albus. Seta albee, juncturis rubiginosis. 
Hab.—In the same stream as B. finitimus (p. 113). 
? im. mari simillima. Tergum thoracis interdum 
brunneo-fuscum. Abdomen opacum. 
