Maskell. — On Freshwater Infusoria. 7 



Salpingaca steinii, Kent. (var. ?). Plate I., fig. 6. 



Agrees with Kent's species in everything but size, but was 

 found attached to Myriophyllum and not to aquatic animals. It 

 forms rosette-shaped clusters. Note that Kent's measurements 

 (Vol. I., p. 346) — "length of lorica, -^ inch" — must be a 

 misprint, or else the figures in his Plate V. are inexact. 



Length of lorica, vqW mcu = 12-5 yu. 



Hutt Valley, W. F. Barraud. 



Order. Flaoellata-Eustomata. 



Genus Traehelomonas. 



Trachelomonas hispida, Perty. Wellington. 

 The New Zealand form seldom shows any neck. 



Trachelomonas teres, sp. nov. Plate I., fig. 7. 



Lorica evenly elliptical, quite smooth ; colour yellow, or 

 reddish-yellow, with a dark-red border ; neck represented by a 

 thin ring, the aperture much wider than is usual in the genus. 

 Animalcule greenish. 



Length of lorica, y^ incli = 35 fi. 



Hutt Valley, W. M. Maskell. 



Distinct, but nearest perhaps to T. lagenella. 



Trachelomonas cylindrica, Ehrenb. Otaki. 



Genus Anisonema. 



Jnisonema grande, Ehrenb. Wellington. 



Anisonema ovatum, sp. nov. Plate I., fig. 8, a, b. 



Animalcules usually free - swimming ; evenly ovate when 

 viewed in any direction ; colour, white. Flagella springing 

 from points within the anterior edge, ventrally, close to each 

 other and to the pharynx, which is long, narrow, and distinct ; 

 anterior flagellum thinner than the posterior one, and about 

 half as long. Contractile vesicle situated near the bases of the 

 flagella. Motion oscillatory, gliding forward. 



Length of body, j-^ inch = 20 p ; length of posterior 

 flagellum, about gA^ inch. 



Otaki, Wellington, W. M. Maskell. 



Distinguished by the evenly ovate form in all positions. 



Order. Cilio-Flagellata. 



Genus Gymnodinium. 



Gymnodinium varians, sp. nov. Plate I., fig. 9, a, b. 



Animalcules free-swimming, without a cuirass ; slightly 

 variable in form, as shown in the figures ; body usually as m 

 (a), with conoidal segments equally tapering, sometimes as in 



