186 Part III. — Thirteenth Annual Report 



MOLLUSCA. 



Limnxa peregra (Miillcr). 



CRUSTACEA. 



Amphipoda. 

 Gammarus (?) duabeni, Lillj. 



COPEPODA. 



Cyclops signatus, Koch. Canthocamptus hirticornis, T. Scott. 



Cyclops serrulatus, Fischer. Attheyella crassa (G. O. Sars). 



Cladocera. 



Alonopsis elongatus, G. O. Sars. Chydorus barbatus (G. S. Brady). 



Alona quadrangularis (M tiller). 



LOGH OF QUARFF. 



Entomostraca were fairly numerous in the gathering from this loch, 

 "besides several other things. The common three-spined stickleback 

 frequented this little loch, some of them being infested with the Ento- 

 parasite Bothriocephalus, which seemed in some cases to entirely fill up 

 the abdomiual cavity. Notonectidae, Coleoptera, Hydrse, Diatomacea, 

 and Desmida3 were also common, but though Entomostraca were moder- 

 ately common, there was not a great variety of them, as only about ten 

 species altogether were obtained, the names of which are as follow : — 



CRUSTACEA. 



COPEPODA. 



Cyclops signatus, Koch. Cyclops serrulatus, Fischer. 



Cyclops strenuus, Fischer. Attheyella pygmasa (G. O. Sars). 



Cladocera. 



Bosmina longirostris (Mtiller). Alona quadrangularis (Miiller). 



Chydorus barbatus (G. S. Brady). Alonella nana (Braid). 



Alona rustica, T. Scott. Chydorus sph&ricus (Mtiller). 



No Mollusca nor Ostracoda were observed in the gathering from Loch 

 of Quarff. 



