BY G. I. PLAYFAIR. 141 



Var. DENTATA, n.var. (PI. viii., f.2). 



In capite glabra minute autem serrulata; a fronte et a tergo 

 dentibus nee spinis instructa. 



Lismore(16, 20). 



Cyclops qiiadricornis, Diaptomns gr^acilioides, Alona clathrata 

 Sars, and Alona Icevissima Sars, were also observed. 



INFUSORIA. 



TllACHELOMONAS VOLVOCINA Var. PELLUCIDA, D.Var. 



Lorica achroa, forma miniita, diam. 8-10 /x. 

 Lismore (1, 8). Common. (PI. viii., f.3). 



The type, diam. 17/x, with deeply yellow-brown lorica, noted 

 at Casino (14), rare. 



Trachelomonas ovalis, n.sp. (PI. viii., f.4). 

 Lorica ovalis vel oblonga, collo niillo, perfecte glabra, achroa 

 vel loiteo-fusca. Long. 30, lat. 22 /x. 

 Casino (14), with 7V. hispida. 



Lepocinclis Steinii var. suecica Lemm. (PI. viii., f.5). 

 Long. Corp. 26-32; lat. 11-12, ap. 3; long. caud. 3 /x. 

 Lismore (22), Casino (14). 

 Cf. Lemmermann, Plankt. Schwed. gewass., T. i., f.20. 



Tar. AUSTRALICA, n.var. (PI. viii., f.6). 



Forma latior, corpore late-oval i, caiida brevi, oblique spiraliter 

 striata. 



Long. Corp. 32, lat. 24; long. caud. 8 /x. 



Lismore (22). Common. 



Neither form was noticeable in the freshly gathered material, 

 being present only as minute vegetative resting cells, unrecog- 

 nisable. After the sample had been standing for several months 

 (in a corked phial without preservative), exposed to a strong 

 diffused light, they were found in numbers, alive and active, 

 having developed in the bottle. 



Menoidium pellucidum var. incurvum (Fresenius). 

 Long. 16, lat. 5 /x. Common. (PI. viii., f.7). 

 Lismore (13). Cf. Daugeard, Les Eugleniens, p.151, f.46. 



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