- 5 - ARCHER 



Specimens of Spirot;cnia parvula. p. l!ll. 



Ciisiiiariniii curtum iRalf's 1 showed. |i IH2 3. 



A number of t'rcsli examples f the zygospores of some Desmidiacese, which, so far as he was aware, had not 

 yet boon met. with, p. 273 74. 



A \ery pu//.ling littli' form (Cosmaritun tuberculatum). p. '275. 

 iKi;7 v. 7: Miorasteriaa Thomasiana, exhibited, p. KK - |g). 



- A very minute new species of Cosmarium with its xygo spore, gathered at Kilbride, near RlessiiiKt.ni. county of 

 '\Yieklow. iCosmarium lobatosporum i p. 1702. 



- Exhibited line specimens of the various stages of conjugation in t'lost.'riuni lineatum, showing its remarkable 

 double zygospores p. 173. 



- Showed specimens and drawings of the various stages of the development and of the perfect zygospore of Spiro- 

 iii-iiia condensata iBn'lu especially interesting as being the first .... p. 233. 



- Showed in the same gathering conjugated examples of Penium olosterioides p. 231. 



A variety of Dcsmidictu conjugated | Micrasterias rotata, dontieulata. Desmidium Swartzii . . .] showed, p. 290' 

 01)7 



- 'I'wo forms not hitherto met with in Ireland. (Docidium baculum (lir.'b.) and Euastrum circularo var. j-l (Ralfsj.) 

 p. 2978. 



- A minute alga new to Britain. Cosmocladium Saxonieum, de Bary p. 2ns -9. 

 18(>S v. S; Irisli specimens of Euastrum didelta. conjugated p. GO. 



- Showed specimens of a Staurastrum which he considered identical with Staurastrum apiculatum (Brcb.) p. (378. 

 showed, new to Ireland. Spirotienia minuta Thuret p. US. [g]. 



- Exhibited good recent specimens of the two little algtu lately recorded by him from Wales Dictyosphserium 

 reniforme and Cosmocladium saxonicum p. 68. [gj. 



- Showed conjugated specimens, with the zygospores, of Penium (Ehr.) Bn'b. p. (is. 



- Desired to record and to exhibit some examples of the zygosporo of Closterium coslatum (C'orda) for the first 

 time seen conjugated, p. lls. 



- Likewise showed a Closterium new to this country, Closterium cyuthia De Notaris p. UK. 



- Cosmocladium saxonicum from Callery bog p. 120 [g]. 



- Specimens of Micrasterias Hermanniaiia (Keinsch) p. l!i. 



- Micrasterias flmbriata. Ealfs. p. 2sii -7. 



- A curious rase of malformation in Closterium striolatum p. 2ss. 



- Presented numerous examples of a very singular-looking encysted state, so to call it, of Staurastrum cuspidatum 

 Brcb. 2K9 291. 



- Malformation seen in Desmidiepe p. 291 2. 



- A number of Desmidieaa showing their zygospores. p. 2!i2 4. 



- Staurastrum Arachne in Ireland, p. 29G. [gj. 



- Recorded the occurrence of Micrasterias fimbriata (Raits) from Callery, p. 2!>ii. 



ISI;:P v. '': A few new or rare forms of Desmidie;e. chieHv Staurastra. taken on an excursion to County Gal way, p. 

 97-8. - [g]. 



- The three very interesting forms shown by Dr. Barker, p. 191196. 



- A fine new Staurastrum from Connemara (Staurastrum verticillatum), p. 190. 



- The occurrence of Micrasterias crux melitensis (Ehr.) Rail's in Connemara, p. 19U. |g|. 



- Specimens taken in Co. Tipperary of Spluerozosma filiforme (Ehr.) Auct , a form of Gonatozygon Ralfsii (de 

 Bary i, p. 198. 



A new Staurastrum from Galway (Staurastrum maaniense). p. 200. 



- Brought forward a number of Desmidie?, taken at Glcngariff. p. 422 1. 



" Zygospore of a Cosmarium, confounded with Cosinarium margaritiforum, p. 425. 

 1 s . ii v. 10: A singular and interesting form of Staurastrum gracile. p. 86 7. 



- A minute little Staurastrum ( most resembled Staurastrum Iteve), p. S9. 



- The plane form of Desmidium aptogonum (Bn'b.'. p. 9(1. new to Britain. Arthrmlesmus l>ifi.lus (i',i\'b.i. p. 9d. 



- Showed Cosmarium anmilatiim (Nag.), p. 92. [g] 



- An interesting condition of a minute scytonematous plant [Palmogloea micrococca (Iviitz).), p. 2023. 

 A new and very minute form of Spirot;enia. (S. tenerrima), p. 203. 



A very pretty, seeming] v new. Cosmarium, which most approached G. cristatum [= Cosmarium ijuadrifariuni 

 Lund. ?]. p. 205. 



A new Cosmarium - nearest C. commissurale) p. 308. 

 Is, I. v. 11: Exhibited several Desmidicn-. Sphserozosma secedcns de Bary Staurastrum huve. var. Clevei \Vittr. 



- Staurastrum elongatum. showed. A new species of Euastrum. p. 023. 



Showed examples of Staurastrum maamense, and of Micrasterias fimbriata, p. 95. [g]. 



- The Z3'gospores of Staurastrum fureigerum, p. !i">. 



Brought for exhibition two new species of Staurastrum. one of Cosmarium. p. luu -1. [gj. 



- Examples of the desmid Pleurotwnium cosmarioides, p. 2112. 

 1^72 v. 12: Conjugated examples of Sfiirutn nin li-inn;iln p. so \ '.IIP. 

 Rarer Desmi'li p. s5 [gj. 



Staurastrum oxyacanthum [compressed form] p. K9. 



- A plane or compressed variety of Staurastrum vestitum p. 04. 



- One or two sketches of new Desmidian species [Docidiuin nodosum] p. 103191. 

 A rare little Alga [Cosmocladium saxonicum] p. 195. 



