Notes on the Ephemeridce. 393 
Page 69. Ephemera vulgata and Danica. A list of 
the Ephemera of Bavaria^ sent by Dr. Kriechbaumer, con- 
tains both species [see Note, pp. 13 — 14, above]. So does 
a set of Ephemerce sent by Schmidt from the neighbour- 
hood in which Scopoli collected. I do not know whether 
the copious and exceedingly abundant species, used as 
manure in Laz (according to Scopoli), is E. Danica or 
not. 
Ephemera guttulata. [See Note to p. 8, above; B. 
maculipennis.^ The type of decora, Walsh [^], hardly 
agrees with my like-named species, but is perhaps not 
distinct. My natata from Saskat[chavan] is larger, and 
(so far as I can see in 3* ¥ im. and subim.) different in 
colour ; but the appendices seem similar in form, though 
I have not quite completed my examination. 
Page 71. E. my ops. The female from New York, 
quoted by you as perhaps referable to E. my ops, is a new 
and entirely different species, analogous in coloiur to E. 
Danica, but much brighter. 
E. lineata. I believe that my lutea, Burm., is your 
lineata ; and this species differs from that represented by 
the four S ? subim. from England, described us ylaucops, 
which agree with Pictet's characteristics of this last-named 
species very well. 
[In a more recent letter to Mr. Walker, I have suggested 
that the four specimens alluded to are not genuine British 
insects, but Swiss or Italian examples of E. glaucops, 
which were accidentally ai'ranged in some series of English 
EphemeridcB by somebody or other. I do not know who 
gave them to Dr. Hagen. Mr. Walker in reply says of 
E. glaucops, " I think with you that it has been called 
British by error." My guess in my Monograph was based 
upon the assumption that there was no doubt as to the 
specimens being British. As the matter stands now, I 
think that this assumption had better not be made.] 
Page 74. E. fasciata. [My figures of details agree 
with the structure of Dr. Hagen's type.] 
Page 81. Lej)tophlebia costalis. [Habitat Sydney 
(Brauer).] 
Page 82. L. Taprobanes. After the forceps in your 
work, I have no doubt that Pot. annulatus, Hag., is B. 
