EPHEMERlDiE. 
Ins. 265 
these genera are treated upon more or less in detail ; Prosopistoma in 
great detail. In Chap. vi. certain parasites are mentioned, all belonging 
to microscopic organisms, for the most part animal, but in the case of 
Prosopistoma of an external vegetable nature. The eleven plates, from 
the author’s own drawings, are beautifully executed ; the figures are all 
numbered consecutively from 1 to 120. Excluding details, the principal 
figures are as follows : — PI. i. Lcptophlebia fusca and Ephemera vulgata ; 
ii. Polymitarcys virgo aud Oniscigaster wahejieldi ; iii. Heptagenia longi- 
cauda ; iv. Cloeon dipterum ; v. & vi. are occupied solely by details ; 
vii. Oligoneuria garumnica ; viii. Ephemerclla ignita and Tricorythus sp. ; 
ix.-xi. Baitisca and Prosopistoma , and on xi. are also represented the 
parasites before alluded to. 
Wallengren, H. D. J. Forteckning pa de Ephemeriden som hittels 
blifvi-t funnapa Skandinaviska halfon. Ent. Tidskr. iii. pp. 173-178, 
204 & 205. 
A list of 22 species, with notes. The following synonymic notes 
are of importance : — Ephemera vespertina , Zett., = Lcptophlebia fusca t 
Curt. ; E. brevicauda , F., Zett., is a Camis , and = C. macrura , Steph. ; 
E. horaria , L., is also a Ccenis , and = dimidiata , Steph. E. vitreata , 
Zett., is a distinct boreal species of Baetis. 
Wessely, T. Die Eintagsfliege. Bl. bohmisch. Yogel-schutz Yer. Prag, 
ii. pp. 55-57. ( Gf also Orn. Centralbl. 1882, pp. 54-56.) 
Probably concerns Polymitarcys virgo. The masses of the insect are 
collected at swarming time at Prague, and sold as food for insectivorous 
birds. Tho author discountenances this practice, aud is of opinion that 
such food causes diseased livers in birds fed with it. 
A species of May-fly in Ceylon has the abdomen sufficiently luminous 
to enable the insect to be captured on a very dark night. It is probably 
Teloganodes tristis , Hag. : Waterhouse, Lewis, & Eaton, P. E. Soc. 1882, 
p. xiii. 
Oniscigaster wahejieldi , McLach., received from Nelson, New Zealand ; 
H. Lucas, Bull. Soc. Ent. Fr. (0) ii. p. xxxii. 
Prosopistoma punctifrons, Latr. Lucas has capturod tho larvas on 
several occasions in the neighbourhood of Paris. The insect should take 
the specific name “ foliaceum,” Fourcroy, which was bestowed upon it in 
1785 ; l. c. p. xevi. 
Cloeon dipterum. An abstract of Ciaccio’s memoir on the structure of 
the eyes of this species [cf. Zool. Rec. xviii. Ins. p. 263], is given by 
Cavanna in Bull. Ent. Ital. xiv. p. 154. 
New genera : — 
Hagenulus, Eaton, l. c. p. 207. Allied to Adenophlebia ; type, II. 
caligatus (Hag., MS.), sp. n., ibid., Cuba. 
Teloganodes , id. 1. c. p. 208. Allied to Epliemerella ; type, Cloe tristis , 
Hag. 
Leptohyphes, id. ibid. Allied to Tricorythus ; type, L. eximius , sp. n., 
ibid., Argentine Republic. 
