54 JAMES MURRAY 



Antarctic species was not at the time studied critically enough, and the knowledge of 

 the peculiar lamellae is only gathered from my sketches, I prefer to leave it meanwhile 

 as a form of A. barbata, to which it appears to be closely related. 



The pectinate border of the mouth was difficult to see, owing to the restless 

 movements of the animal, but it was clearly seen in a well-grown young in the egg 

 (Fig. 9c). 



The first eggs found confirmed the belief that the animal is distinct from 

 A. barbata. They were elliptical, and lacked the knobs characteristic of the egg of 

 A. barbata. Later on a different egg was found, which had the knobs as in A. barbata, 

 but much reduced in size (Fig. 9c). 



Adineta vaga, Davis (12) 



The type of this species (which is the var. minor of Bryce) was found in several 

 lakes soon after we landed at Cape Royds. It was not seen later, and was thus never 

 subjected to a very critical examination. 



Habitat. Blue Lake, Clear Lake, and Coast Lake. 



Adineta gracilis, Janson (20) 



Habitat. Blue Lake, Clear Lake, and a little pond on the lower slopes of Mount 

 Erebus. The examples appeared to be quite typical. 



Adineta longicornis, Murray ? (27) 



Description. Small, head ovate, rostral part divided into two large, evenly rounded 

 lobes. The spurs are long, slightly divergent, and taper to acute points. 



Habitat. Among moss from the High Moraines, Cape Royds, January 1909, one 

 example seen. 



It is with hesitation that this animal is referred to A. longicornis. The spurs are 

 shorter than in the type, and the head is of slightly different shape. As the rostral 

 structures were not clearly made out, it cannot be confidently separated from that 

 species. 



NOTE 



Additional Species. In April 1910, just as we go to press, an additional Bdelloid 

 has been found alive, in moss collected by Priestley at the Stranded Moi-aines. It is 

 a pellet-maker having three teeth in each jaw, and may be identified as Callidina 

 (Macrotrachela) tridens, Milne. That species is very similar to C. constricta, except 

 in the very distinct teeth. A more detailed description of it is wanted. 



This addition, with the identification of the Floscidaria as F. cornuta, brings up 

 the list of recognised Antarctic Rotifera to 16 species. 



