INDEX. 
Acanthocystis pertyana, sp. n., 233, 272. 
Achlya cornuta, sp. nov., 140. 
Acorus calamus, new to Ireland, by D. 
Moore, 112. 
Allolestes M‘Lachlani, gen. and sp. nov., 
224. 
Amphiprora costata, sp. n., 228. 
Amphitrema Wrightianum, gen. et spec. 
nov., 263, 291. 
Andrews (William), notes on Irish Lepi- 
doptera, 20. 
on Fishes captured by trawling, 
38 
Zoological Notes, 122. 
on Irish Sponges, 179. 
Annual General Meeting, Nov. 3, 1865, 
iE: 
Novy. 1, 1866, 93. 
Nov. 7, 1867, 165. 
Nov. 5, 1868, 195. 
Archer (William), description of a new 
species of Bulbochete, 9. 
Remarks on the genera Zygogonium 
(De Bary) and Zygogonium (Kutz), 
with description of the conjugated state 
of the plant, believed to be identical with 
Zygogonium leve (Kitz), but which is 
referrible rather to the genus Mougeotia 
(De Bary non. Agardh), 114. 
on two new species in Saprolegnieze, 
referrible respectively to the genus Sa- 
prolegnia (Nees v. Esenb) and Achlya 
(Nees v. Eserib), 136. 
note on ‘' Asteridia’’ occurring in 
Penium digitus (Bréb), 144. 
on the conjugation of Spirotenia 
condensata (Bréb.), and of S. truncata 
(Arch.), 147. 
note on a peculiar cyst-like structure 
enclosing examples of Staurastrum cus- 
pidatum (Breb.) and other minute 
alge, 192. 
on some Freshwater Rhizopoda, 
new or little known, 231. 
Archer, William, resignation of office of 
Hon. Secretary, 
Arachnida from Lucca, by J. Blackwall, 
295. 
—— from Sicily, by J. Blackwall, 297. 
Aphrocallistes bocagei. sp. n., 30S. 
Arran Islands, West of Ireland, notes on 
Diatoms of, 106, 155, 227. 
Baily, W. H., on Fossil Plants from the 
South of Ireland, Pt. T1., 41. 
Part 1), 47. 
Barker, John, M. D., Exhibition of Oxy- 
uris ambigua from Porcupine, 31. 
on skeleton of Platycercus eximius 
(abstract), 153. 
Bennett, E. H., M. D., on the possibility 
of naturalizing the Ringed Snake in 
Ireland, 27. 
Birchall, Edwin, Catalogue of the Lepi- 
doptera of Ireland, 57. 
Birds, rare, on the shores of the Moy and 
Killala Bay, by R. Warren, Jun., 23, 
154. 
—— on the migration of, by A. G. More, 
26. 
observed in April, 1866, in County 
Mayo, by J. H. Kinahan, 86. 
notes on some Irish, by B. Brad- 
shaw, 174. 
Bothreocephalus latus, its occurrence in 
Ireland, by W. Frazer, 125. 
Bradshaw, B., notes on some of our Irish 
Birds, 174. 
Bulbochete pringsheimiana, sp. nov., 9. 
Cienkowski Ueber die Clathrulina eine 
neue Actinophryen-Gattung, abstract 
of, by W. Archer, 287, 
Coconeis -clavigera, sp. n., 156; C. 
Wrightii, sp.n., 156 ; C. Portei, sp. n., 
156. 
Colias edusa, notes on, by E. Perceval 
*  Werieht,)7. 
