on the Hphemeride. 23 
Ciox (continued). 
diptera, Burm. Handb. ii. 798; Her.-Schef. 346; ! Pict. Ephem. 266, pl. 
xlii.; Schn. Stet. Ent. Zeit. vi. 340; Cal. (1848); Sieb. Beit. 
xii. 3; Brau. N. Aust. 26; !Hag. An. Soc. Ent. Fr. 1864, p. 
39, and Ent. Mo. Mag. ii. 25; Ed. Pict. Nevr. d’Hsp. 25; Oul. 
1867, p. 27; Ausser. Neur. Tirol. 185=Cloeon dipterwm. 
+ diptera, Ronalds, v. No. 16=Baetis niger, subim. 
dubia, Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 380, Proc. Ent. Soc. 
Philad. ii. 178=Cloeon. 
fasciata, Pict. Ephem. 262, pl. xli. 4; Hag. Am. Syn. (list) 304= Baetis, 
Q im. 
ferruginea, Walsh, Proc. Acad. Nat. Se. Philad. 1862, p. 379=? Baetis, im., 
subim. 
fluctuans, Walsh, 1. c., & Proc. Ent. Soc. Philad, ii. 178=Baetis, 9 im. 
fusca, Schn. Stet. Ent. Zeit. vi. 340=? Baetis, 2 im. 
fuscata, Pict. Ephem. 251, pl.xl. 1; Oul. 1867, p. 28=Leptophlebia cincta, 
é im. 
halterata, Burm. Handb. ii. 798; Her.-Schef. 346; ! Ramb. Nevr. 299; 
(misprinted hatterata in Sieb. Beitr. xiii. 3)=Centroptilum 
luteolum, g im. 
horaria, Lin., in Ephemera, L.; Ramb. Nevr. 299; Pict. Ephem. 270; 
Oul. 1867, p. 29=? Cenis dimidiata. 
hyalinata, ! Ste., in Cloeon, Ste.; Pict. Ephem. 271=Centroptilwm luteo- 
ad lum, 2 im. 
Uitura, Pict. Ephem. 260, pl. xli. 1-3=Centroptilum. 
maderensis, ! Hag. Ent. Mo. Mag. ii. 25=Baetis Rhodant. 
marginalis, Hag. Ceyl. Syn. i. 477, ii. 206; incert. sed. (Gen. XXII, 2). 
melanonyx, Pict. Ephem. 258, pl. xl. 6= Baetis, g im. 
mendaz, Walsh, Proc. Acad. Nat. Sc. Philad. 1862, p. 381, & Proc. Ent. 
Soe. Philad. ii. 178=Cloeon. 
mollis, ! Hag. Am. Syn. 52 [not described] =Leptophlebia, g im. 
obscura,! Ramb. Nevr. 297=Cloeon, 9 subim. 
oclvacea,! Ste., in Cloeon, Ste.; Pict. Ephem. 271=Centroptilum luteo- 
lum, 2 im. 
posticata, Say, in Cloeon, Say ; Hag. Am. Syn. 53=Baetis, g im. 
propingua, Walsh, Proc. Ent. Soc. Philad. ii. 207; [for vicina, Walsh] = 
Baetis. 
pumila, Burm. Handb. ii. 799; Her.-Schef. 346; Pict. Ephem. 253, pl. 
xl. 2; Sieb. Beit. xii. 3; Brau. N. Aust. 26; ! Hag. An. Soc. Ent. 
Fr. 1864, p. 39; Meyer-Dir, Mitt. Schw. Ent. Ges. i. 221; 
Ausser. Neur. Tirol. 136= Baetis. 
Tpumila, Hag., in Cloeon; Oul. 1867, p. 28=Baetis binoculatus. 
t pumila, ! Ramb. Nevr. 298=Cloeon russulum, g im. 
pygmea, Hag. Am. Syn. 54; Walsh, Proc. Ent. Soc. Philad. ii. 178 = 
Baetis, 2 im. 
Rhodani, ! Pict. Ephem. 248, pl. xxxvi-ix.; Brau. N. Aust. 26; ! Hag. An. 
Soe. Ent. Fr. 1864, p. 39; Meyer-Diir, Mitt. Schw. Ent. Ges. 
i. 221; ?, Oul. 1867, p. 28; Ausser. Neur. Tirol. 136= Baetis. 
