lm ay, a 
on the Ephemeride. 97 
Ceenis oophora. 
O. oophora, Pict. 1843-5. 
Fusca; alis albicantibus, pedibus flavescentibus. (Pict.) 
Long. corp. ? im. 4, exp. al. 11 mm. 
Hab.—Sardinia. (Kollar.) 
It is just possible that this species may be rediscovered, 
and determined by comparison with Pictet’s figure ; but 
the chances are small, 
Cenis luctuosa. 
(Forceps maris, Pl. V. fig. 6.) 
(?) Brachycercus Harrisella, Curt. 1834; (?) C. Harri- 
sella, Ste. 1835-6. Oxycypha luctuosa, Burm. 1839. Hphe- 
mera brevicauda, Blanch. 1840. Cents luctuosa, Pict. 
1843-5. O. halterata (nympha), Etn. 1868. 
Subimago, v.v. s. Caput et prothorax corvini; meso- 
et meta-thoraces atri. Ale nigricantes, nervis obscuris. 
Pedes albi, interdum vix fumati; antici tibiis tarsis et 
femorum apicibus anthracinis. Abdomen pallide fulvum, 
setis atris. 
Imago, v.v.s. ¢ & 9. Caput et thorax picei, sutu- 
ris et lateribus fuliginosis; tarsis anticis fuliginosis, et 
pedibus posticis nigricantibus juncturis atris. Abdomen 
rufo-fuliginosum, linea obscura brevi ad latera utrinque 
in singulis juncturis: forcipe setisque griseis vel nigri- 
cantibus. 
Long..corp. ¢ 6°5, 2 5-7; al. dg 6, 2 5°5; set. J 
im. 25, subim. 4; set. ? subim. 3 & 4mm. 
Hab.—Somersetshire and Berkshire ; Berlin (Burm.) ; 
Lake of Thun (Pict.). 
The name of this species probably has reference to the 
pale oblong spots near the bases of the long bristle-like 
processes from the lateral edges of segments 7, 8 & 9. 
These bristles are found in all the English species, and 
are longer in the imago than in any other stage of de- 
velopment. 
TRANS. ENT. soc. 1871.—parT 1. (MARCH.) H 
