PERLIDiE, EPHEMERID^.. lus, 211 
PERLIDiE. 
Brandt, A. Ueber den rudimentaren Hermaphroditismus bei Perliden. 
Zool. Anz. i. pp. 391-393 [1878]. 
Having previously noticed rudimentary ovaries, &c., in a ^ larva of 
Perla hipunctata, Brandt was astonished to observe the same structures in 
a ^ imago of the same species from another locality; he asks, can he only 
have observed a monstrous individual in each case, or can this rudimen- 
tary hermaphroditism be the rule in this species ? 
Isopteryx tuhulosa, sp. n., Stein, 'MT. Miinch. ent. Ver. iii. p. 139, 
woodcut, Thuringia. 
Ephembrid.®. 
Muller, Albert. Entdeckung der Nymphe von Oligoneuria rhenana, 
Imh. MT. Bchw. ent. Ges. v. (1878) pp. 384-386. 
Concerns the discovery of larva and nymph, in July and October, in 
the Rhine at Basle, with description of the nymph, and notes on the 
distribution of the genus. 
Prosopistoma punctifrons. E. Joly has the following additional notices 
on this creature. In Feuill. Nat. viii. pp. 99 & 100, he mentions having 
found more than 200 examples in the Garonne at Toulouse. In the 
same journal, ix. pp. 24 & 25, the notice of its discovery in the Rhone 
[cf. Zool. Rec. XV. Ins. p. 251] is reprinted. In Bull. Soc. Nimes, vii. 
January, 1879 (only separate copy, pp. 1-7, seen by the Recorder), under 
the title “R^centes captures de Prosopistomes dans la Garonne,” he 
extends the subject, and concludes Avith an examination of an opinion 
supposed to have been advanced by McLachlan [the Recorder is not 
aware of having held such an opinion] to the effect that Prosopistoma 
may be fitted for a continuous aquatic life, with which he is disposed to 
agree. 
E. Joly & A. Vayssi^re have also a note on the subject in C. R. Ixxxvii. 
pp. 263-265, giving a succinct account of the anatomy and physiology of 
the creature, with a suggestion as to the possible absence of aerial forms. 
Breyeria borinensis, De Borre. In Nature, xix. p. 501, A. R. Wallace 
advances this fossil as a proof of the existence of Lepidoptera in the 
carboniferous epoch. McLachlan, 1. c. p. 554, calls attention to the fact 
that he had examined the fossil, and had published an opinion (CR. Ent. 
Belg. XX. p. 36) that it was an Ephemerid. Wallace, p. 582, defends his 
statement ; McLachlan, xx. p. 5, replies. A. P. de Borre, CR. Ent. Belg. 
xxii. pp. Ixxvii.-ixxxiii., enters into a lengthy examination of the ques- 
tion, admitting the existence of the transverse nervules, which, according 
to McLachlan, should render Lepidopterous affinities impossible, but is 
still inclined to the idea that it may represent some primitive Lepido- 
pterous condition. A. E. Eaton, Nature, xx. p. 315 (Kosmos, iii. 
pp. 218 & 219), states that he had recently examined the fossil, and is 
disposed to place it in the vicinity of Palingeniay in the Ephemeridce. 
