on the Ephemeride. 19 
Baetis (continued). 
i| fuscata, ! Walk. Cat. 570; Hag. Am. Syn. 47=Ephemerella invaria, 
im. ¢, & subim. 
? || fuscus, Schn. ; in Cloe, Schn. 
gigantea, Hag. & Pict. Org. Reste im Bernst. ii. 75; incerte sedis. 
grossa, Hag. & Pict. Org. Reste im Bernst. ii. 75; incerte sedis. 
guttata, Pict. Ephem. 187, pl. xxiv.3; Walk. Cat. 559= Heptagenia, 2 im. 
horaria, ! Ste. Ill. vi. 66; a Cloeon, 9 subim., indeterminable. 
ignava, ! Hag. Am. Syn. 47=Leptophlebia cupida, 2 subim. 
ignota, ! Walk. Cat. 571=Isonychia, g im. 
interlineata, Walsh, Proc. Ent. Soc. Philad. ii. 188; [for Siphlwrus 
femoratus, Walsh, if distinct from S. femoratus, Say]. 
interpunctata, Say, Journ. Acad. Nat. Se. Philad. viii. 41; Pict. Ephem. 
194; Walk. Cat. 562; Le Conte, rep. ii. 411; Hag. Am. 
Syn. 44= Heptagenia. 
invaria, ! Walk. Cat. 568; Hag. Am. Syn. 48=Hphemerella, g im. 
tridana, Kolen. Wien. Ent. Monatschr. iv. 383= Heptagenia. 
lateralis, Curt. Phil. Mag. 1834, p. 121; ! Ste. Ill. vi. 65; Pict. Ephem. 
175, pl. xxi.; Walk. Cat. 557; Hag. Brit. Syn. 28= Heptagenia. 
longicauda, ! Ste. Ill. vi. 63; Pict. Ephem. 193; Walk. Cat. 560= Hepta- 
genia. 
t longicauda, Hag. Brit. Syn. 24= Heptagenia flavipennis, 2 im. 
t longicauda, ! Ronalds, ed. v. pl. ix.=Heptagenia venosa, 9 im. 
longipes, Hag. Verh. zool.-bot. Ver. Wien, 1854, p. 7; Hag. & Pict. Org. 
Rest. im Bernst. ii. 76; incerte sedis. 
luridipennis, Burm. Handb. ii. 801; Pict. Ephem. 192; ! Walk. Cat. 563, 
¢ im.; Hag. Am. Syn. 49= Heptagenia. 
lutea, Hag. Brit. Syn. 23= Heptagenia elegans. 
luteolus, Mil. ;in Ephemera, Mil. ; ! Kin. Ent. Mo. Mag. v. 88= Centroptilum. 
marginalis, Burm. Handb. ii. 801; Her.-Schef. 346; Sieb. Beit. xii. 3 ;— 
description= Heptagenia elegans ? — [reference = Potamanthus 
luteus ? ] 
melanonyx, Pict. ; in Cloe, Pict. ; Cloeon, Walk. 
mellea, Curt. Phil. Mag. 1834, p. 121= Potamanthus luteus, subim. 
montana, Pict. Ephem. 172, pl. xx. 3; Walk. Cat. 557; Brau. N. Aust. 26; 
Ausser. Neur. Tirol. 184=Heptagenia, g im. 
t? montana, Hag. Brit. Syn. 26= Heptagenia insignis, im. 
niger (nigra), Lin.; in Ephemera, Lin.; Ste. Ul. vi. 67; (Ronalds, ed. i. 
pl. ix. 16-17 [? 17, type] ) ; !Htn. Trans. Ent. Soc. 1870, p. 6. 
|| nigra, Hag. Stet. Ent. Zeit. xxvi. 229=Heptagenia ? 
noveboracana, Licht.; in Ephemera, Licht.; Hag. Am. Syn. 50 = Hepta- 
genia luridipennis ? 
obesa, Say, Journ. Acad. Nat. Sc. Philad. viii. 43; Pict. Ephem. 195 ; 
Walk. Cat. 563; Le Conte, rep. li. 412; Hag. Am. Syn. 45= Beetis- 
ca, subim. 
obscura, ! Ste. Ill. vi. 65; Walk. Cat. 558=Ephemerella ignita, 9 im. 
tobscura, Hag. Brit. Syn. 27; ? Pict. Ephem. 152, pl. xxiii. 1= Heptagenia 
lateralis, ¢ im. 
c2 
