I 1 he Ins II Naturahsl. January, 



HELIOZOA. 



Actlnophrys sol (Miill.) Ehrenb. — Killougli and Calary. 

 Hctcrophrys myriopoda, Archer.— Carrig and Lough Dan (W. A.). 

 H. Fockei, Archer,— Lough Dan and elsewhere (W. A.)- 

 Raphldiophrys viridis, Archer.— Carrig and Tinahely (W, A.). 

 Pompholyxophrys punicea, Archer — Calary and Carrig (W. A.). 

 Acanthocystis chaetophora, Schrank.— Co. Wicklow (W. A.). 

 A- pertyana, Archer.— Calary and near Carrig Mountain (W. A.). 

 Clathrullna eleg^ans, Cienk.— Calary (W. A.). 



As some of the above names are not the same as those under which the 

 species were recorded, or appear in Mr. Butler's list, it will be well to 

 make a few remarks on their synonynn'. 



Aniivba pioteiis is Barker's A. difflitens ; A. verrucosa is his A. qiiadriliueala. 

 Cetitropyxis aculeata is Archer's Arcella aciileata. Difflngia lobosioma was 

 referred b\' Archer to D, oblonga^ his description showing that it was 

 lobostowa. Cochliopodium vesiitutn is Archer's Aniphizonella vestita. Nebela 

 triangitlata was described as a Difflugia ; Placocysta spinosa has been removed 

 from Euglypha. Asstilina seminiilum is Archer's Eiiglypha iincia ; Cyphoderia 

 anipnlla is his C. viargaritacea ; Paniphagus hyalinus is his Pleiirophrys splmrica > 

 Pseudodifflugia gracilis and P. fiih'a&vo. his Pleurophiys amphitronatoiJes and P. 

 fnlva. Microgo7nia sociaiis has been removed from Gromia ; it was also 

 recorded b}' Archer as Cystophrys haeckeliana. Diplophrys Archeri wa.Si sub- 

 sequently named by Archer Cystophrys oculea. Hctcrophrys viyriopoda 

 includes//, j/iarina of Baiker's list. Acanthocystis chtctophora is Archer's 

 A. turpocca. 



. Notable feattire.s in the list are the comparativeh' large 

 number of filose Conchiilina and of Heliozoa fotmd by Archer, 

 my own collection chiefly consisting of lobose Conchiilina. 

 Tlie absence of any Hyalosphenia is remarkable, my collections 

 from similar situations in North Wales nearly always contain- 

 ing species of this pretty genus. H. ctincata^ Stein, and //. 

 inconspiaia, G. S West, are its only species hitherto recorded 

 for Ireland. 



In conclusion I may point out that a very similar collection 

 of Rhizopods might be obtained from any county in Ireland. 

 These most beautiful microscopic animals abound wherever 

 there is pure water and growing vegetation, and a collection 

 made in the summer or autumn would provide ample material 

 for investigation throughout the winter, for although Rhizopods 

 would not live long in a small quantity of stagnant water, tliey 

 will live for months in wet Sphagnum or other bog-mo.ss. 



Watford. Herts. 



