PSOCIDiE—EPHEMERIDJE. 
Ins. 253 
AmpTiipsocus hildebrcindi, id. t. c. p. 189, fig. 3, Madagascar. 
Ccecilius abjectus and fiavipennis, Costa, t. c. p. 243, Sardinia ; C. amicus, 
Kolbe, t. c. p. 191, Madagascar. 
Psochus funerulus , Costa, t. c. ibid., Sardinia. 
Perlid^:. 
Perla ochracea, sp. n., Kolbe, B. E. Z. xxix. p. 156, pi. v. fig. 8, 
Algeria. 
Epeemerid.e. 
Creutzberg, X. Ueber den Kreislauf der Ephemerenlarven. Zool. 
Anz. viii. pp. 246-248 ; translated in Ann. X. H. (5) xv. pp. 494 
& 495 ; abstr., J. R. Micr. Soc. (2) v. p. 637. 
Critical as to statements by Verloren. In Cloeon dipterum the author 
finds that the dilatation ( u gefassartige Erweiterung ,: ) of the circulatory 
canal in the caudal appendages in the last segment has a direct communi¬ 
cation with the dorsal vessel, &c. 
Eaton, A. E. A Revisional Monograph of Recent Ephemeridce , or May¬ 
flies. Parts, iii. & iv. Tr. L. S. (2) iii. pp. 153-281, pis. xlvi.-lxiii. 
[Cf. Zool. Rec. xx. Ins. p. 263 ; xxi. p. 280.] 
Comprises the fourth series of Croup ii. of the genera, and three series 
of Group iii. The genera considered are Baetis , Centroptilum, Cloeon, 
Collibcetis, Coloburus , Chirotonetes , Metamonius , Ameletus , Dipteromimus, 
Siphlurus, Oniscigaster , Bcetisca , Ametropus, Atopopus , Thalerosphyrus, 
Epeorus, Bleptus , Iron, Cinygma, PJiitlirogena, Pcegniocles, Heptagenia, 
Compsoneuria, and Ecdyurus, with others not named but of which the 
nymphs are noticed. The plates mostly consist of details of nymphs, 
&c. PI. xliv., Baetis rhodani: pi. xlv., a nameless ally of Centroptilum 
(these two published in 1884) ; pi. xlvi., Centroptilum luteolum ; pi. xlvii., 
Cloeon rufulum, simile, and dipterum ; pi. xlviii., Callibcetis sp. ?; pi. xlix. 
Chirotonetes sp. ? ; pi. 1., Siphlurus lacuslris, and others doubtful; pi. li., 
Oniscigaster wahefielcli ; pi. Iii., Bcetisca obesa ; pi. liii., uncertain genus ; 
pi. liv., Rhithrogena aurantiaca and semicoloratci ; pi. Iv., Iron sp. ? ; 
pi. lvi., Epeorus torrentium ; pis. lvii.-lix., doubtful genera ; pi. lx., Hepta¬ 
genia gallica ; pi. lxi., Ecdyurus sp. P ; pi. lxii., Ecclyurus, \arious species, 
some undetermined ; pi. lxiii.; Hexagenia (supplementary to pi. xxix.), 
and details of Ephemera. P. 236 is occupied by a table indicating the 
genera of the Ecdyurus type according to tarsal characters. 
Great swarms of Epliemericlce on Lough Xeagh, Ireland ; W. F. John¬ 
son, Ent. M. M. xxii. p. 165. 
Cloe unicolor, Hag., renamed Baetis hageni ; Eaton, t. c. p. 169. 
Baetis tessellata, Hag., renamed Callibcetis hageni ; id. t. c. p. 192. 
Heptagenia brunnea, Hag., p., renamed Siphlurus occidentals ; id. t. c. 
p. 218. 
