20 JAMES MURRAY 



never saw another example. It is possible that the species is not a native of the lake, 

 which is situated only a few hundred yards to the north of a bay of the sea, and 

 it is conceivable that in a severe summer gale microscopic Crustacea and other 

 organisms might get caught up with the spray and blown into the lake. Against 

 this is the fact that Blue Lake is the freshest of all the lakes, and the water from it 

 is as fresh as condensed water. No organism definitely recognisable as marine 

 was ever got in it. 



The only other Crustacean found, a small Harpacticid like Canthocamptus, was 

 also got in Blue Lake. It was never found in the shallow part of the lake, called the 

 Narrows, but only at a depth of from 9 to 1 5 feet below the surface in a shaft sunk 

 by Priestley in July 1908. On July 13, we found a skin on some scraps of weed at 

 a depth of 9 feet. On July 17, on a film of weed covering the gravel of the bed of 

 the lake at a depth of 15 feet, another skin was got. There is more probability of 

 this Crustacean being a native of the lake than the Calanid, as its relatives are not 

 free-swimmers, but creep about on various plants. No drawings or photographs of 

 the Crustacea were obtained. 



Mites. In Coast Lake, Blue Lake, Clear Lake, and Deep Lake (near Cape 

 Barne) skins of small mites were got. During our stay in the Antarctic, none were 

 seen alive, but after our return to England a living mite was obtained from vegeta- 

 tion brought from Deep Lake. It had probably hatched from an egg. In Coast 

 Lake they were abundant, and of several species. No drawings or photographs were 

 made, but a specimen of one kind was mounted, and it is hoped that enough 

 examples will yet be got to enable us to report upon them. 



Insect. On Plate IV., Fig. 16, is the photograph of the only Antarctic insect 

 which we obtained, a parasite on Maccormick's Skua. Two examples were got by 

 Joyce on one Skua, and it appears to be rare, as very careful search failed to find 

 any others. On an Emperor Penguin also a small louse was seen, but the specimen 

 was lost. 



Other Arthropods. In the lakes we occasionally found fragments of Arthropods, 

 but whether of Crustacean, Insect, or Acarid we did not find out. A probable explana- 

 tion of such occurrences is that they were parts of small marine Crustacea, brought by 

 penguins as food for their chicks, and blown into the lakes. 



Worms. In addition to the Kotifera we found worms belonging to several other 

 groups Gastrotricha, Turbellaria, and Nematoda. 



Gastrotricha. This small group, supposed to stand near the Rotifera, was repre- 

 sented by a single example of Chcetonotus found among weed from the Deep Lake 

 at Cape Barne. 



Turbellaria. Microscopic Turbellaria were found in Coast Lake and Blue Lake. 

 In the former they were at one time very abundant. 



Nematoda. The Nematodes of the lakes were microscopic and free-living. Two 



