158 
Page 43. 
48. 
a9: 
84. 
ADDENDA TO THE GENERIC SYNOPSIS. 
After “ TRIPLAX,” add 
ECANUS Rudd. MSS., Steph. 1sp.  T. glaber Pk. 
Sub-hemispheric ; antennz with an elongate, 3-jointed, acute 
club. 
After “ LACHESILLA,” add 
CLOTHILLA Westw. ———— 1 sp. C. studiosa Westw. 
Antenne long, more than 25-jointed; tarsi $-jointed; wings 
obsolete. 
Obs. Atropos and Lachesilla form the genus Troctes Burm. 
OXYCYPHA Burm. is synonymous with Brachycereus and Ceenis. 
A mark of doubt should be added to the name E. bioculata Linn. 
(?), and E. venosa Fab. given as the type of Baetis. 
Ephemera horaria Linn. is the second species of Burmeister’s genus 
PALINGENIA. — Stephens gives this species as British, but 
with a doubt as to the name. The type of this genus is the E. 
Swammerdamiana. 
After “ CLOEON,” add 
BRACHYPHLEBIA Westw. Vol. II. p. 25. note*. Cle B. 
Burm. he 
Two caudal sete, four wings; posterior very minute, with 
only two longitudinal nerves; front margin angulated. 
Obs. I cannot cite E. halterata of Fabricius as the type 
of this genus, as he expressly says that that species has 
three anal sete. 
After “ HEMEROBIUS,” add 
SISYRA Burm. WHemerosius C. Steph. 3 sp. H. fuscatus Fab. 
Anterior wings with the costal nervures simple, few in number ; 
discoidal nervures not arising from the longitudinal rib, but 
parallel thereto. St. pl. 30. f. 4. 
After “ Sect. II.” add 
Subsection 1. Predones. Vide Vol. II. p. 184. 
Division 1. Jnsectivora. 
After “ ANDRENA,” add 
MEGILLA Fab. Awnprena p. Latr. sp. M. labiata F. 
Dufour in Ann. Soc. Ent. Fr. 7. pl. 9. f. 3. si 
Two submarginal cells; spur of fore legs simple; oceliie 
straight line. 
END OF THE GENERIC SYNOPSIS. 
