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Part III. — Fifteenth Annual Report 



size as Aith Loch, but shallower about the margin and destitute of vegeta- 

 tion. 



Loch of Brough. 



Examined, 15th October 1896. 



Brough Loch lies near the middle of Bressay, at an elevation of 77 feet. 

 With the exception of the Loch of Setter, through which fish must pass to 

 it, it is said to be the only loch in Bressay that affords good trout-fishing. 

 It appeared to be deeper than the Loch of Setter, and was less barren in 

 appearance, owing to the presence of some algae round the shores. 



FAUNISTIC NOTES. 



A detailed list of the species of Mollusca and Crustacea obtained in the 

 lochs examined during the past year is contained in the annexed table of 

 distribution, but the following short description of the contents of the 

 gatherings from the various lochs may also be of interest. 



Loch of Wick. 



Although the number of species obtained in the gathering from this 

 loch was not very great, it included several comparatively rare forms, such 

 as Moraria Anderson-Smithi and Acantlwleberis curvirostris. In this 

 gathering the pretty Graptoleberis testudinarius was moderately common. 



Gossa Water. 



Four species of Copepoda, three of Ostracoda, and nine of Cladocera, 

 were observed in the gathering from this loch. Gammarus pulex and a 

 single species of Mollusca were also obtained. 



Neugles Water. 



Several interesting species were obtained in the gathering from this 

 loch, especially among the Cladocera, — viz. : Latona setifera, Drepanothrix 

 dentata, llyocryptus sordidus, Alona intermedia, and Chydorus globosus. 

 Cytheridea lacustris (one of the Ostracoda) was also obtained. 



Lochs of Asta and Tingwall. 



In some respects the gatherings from these two lochs were more than 

 usually interesting. Among the Mollusca in the gathering from Loch of 

 Asta, Planorbis contortus and Planorbis glaber were obtained for the first 

 time during the investigations that are now being carried on. They have 

 both, however, been recorded for the Shetland Islands in Dr Jeffrey's 

 British Conchology. Camptocercus macrurus, one of the Cladocera 

 obtained in this loch, is one of the species now recorded for the first time 

 for Shetland. Other interesting forms, such as Cantlwcamptus hirticornis 

 and Chydorus globosus, were also observed. 



In this gathering from Loch of Tingwall were Gammarus Duebeni, 

 Cantlwcamptus hirticornis, Cantlwcamptus cuspidatus (this is an interest- 

 ing addition to the fauna of Shetland), Chydorus globosus, llyocypris 

 biplicata, and Potamocypris fulva. A few specimens of Jeer a Nordmanni 

 were observed in this gathering, which probably had been accidentally 

 introduced. 



