2 Dr. T. Scott oil sortie 



Few attempts appear to have been made to systematically 

 examine the fresh-water Entomostraca of the Islands, and 

 the collections now under consideration are therefore the 

 more interesting, as they represent most of the fresh-water 

 areas that are of any importance. 



A paper describing some results of Mr. Vallentin's re- 

 searches at the Falklands in 1898-1899 has already been 

 published. This paper, prepared by the Rev. T. R. R. 

 Stebbing, appeared in the ' Proceedings of the Zoological 

 Society of London ' in May 1900, and deals with Crustacea 

 belonging to the Brachyura, Macrura, Schizopoda, and 

 Isopoda — all of them marine except Trichoniscus magellanicus, 

 specimens of which were " found in a damp cave on the top 

 of a hill 450 feet high 2 miles distant from Stanley ." 



The Copepoda referred to in the following notes were 

 obtained in gatherings from various places, and were collected 

 at various times during 1909, 1910, and 1911. Most of the 

 samples examined were from fresh-water localities, but a few 

 of them were marine, and these were collected chiefly by 

 tow-net in the vicinity of the Islands. The number of fresh- 

 water samples was considerable, and in some of them 

 Copepoda were tolerably plentiful ; but there was not much 

 variety — indeed, some of the gatherings consisted almost 

 exclusively of one or tw r o species. Calanoids and Cyclops 

 were generally present, but no Harpactids were noticed in 

 any of the fresh-water samples. The following is a descrip- 

 tion of species belonging to the Calanoida and Cyclopoida 

 observed in the collections * : — 



Calanoida. 

 Fam. Centropagidae. 



Genus Boeckella, de Guerne and Richard, 1889. 



In this genus the inner rami of the last pair of legs in the 

 male are more or less rudimentary and almost devoid of 

 armature. Only one species of Boeckella was observed in 

 Mr. Vallentin's collections. 



Boeckella michaelseni (Mrazek). (PI. I. figs. 4-6.) 



1901. Boeckellina michaelseni, Mrazek, (5) p. 11, figs. 5, 10, 20, 23, et 

 seq. 



* Notes on some marine Harpacticoida &c. observed in the marine 

 samples will appear later. 



