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Part III. — Seventeenth Annual Report 



III. THE INVERTEBRATE FAUNA OF THE INLAND WATERS 

 OF SCOTLAND. — REPORT ON SPECIAL INVESTIGATION. 

 By Thomas Scott, F.L.S., Mem. Soc. Zool. de France. (Plate VII.) 



Contents. 



Introductory — Purpose of the Special Investigation, . . . .133 

 ,, Names of the Lochs Examined, .... 133 



Method employed in the Examination, . . . 133 



Results of the Investigation : — 



(I) Lochs of the First Series. 



(1) Loch Lomond. Description of the Loch, . . . 135 



,, Temperature Observations, . . . 136 



Special Note on Temperature Observations. . 136 



,, Pelagic Entomostraca, .... 137 



„ Shore Invertebrates .... 139 



,, Note on Dim Lochan, . . . .141 



(2) Loch Arklet. Description of the Loch, . . . 142 



,, Temperature Observations, . . .142 



,, Pelagic Entomostraca, . . . .143 



,, Shore Invertebrates, . .. . .144 



(3) Loch Katrine. Description of the Loch, . . .146 



,, Temperature Observations, . . 147 



,, Pelagic Entomostraca, . . . .148 



,, Shore Invertebrates, . . . .149 



(4) Loch Achray. Description of the Loch. . . . 151 



,, Temperature Observations, . . .152 



,, Pelagic Entomostraca, . . . .153 



,, Shore Invertebrates, . . . .154 



(5) Forfar Loch. Description of the Loch, . . .156 



,, Temperature Observations, . . .157 



,, Pelagic Entomostraca, . . . .157 



,, Shore Invertebrates, . . . .158 



(6) Loch Leven. Description of the Loch, . . . 161 



,, Temperature Observations, . . . 161 



,, Pelagic Entomostraca, . . . .162 



,, Shore Invertebrates, . . . .163 



(7) Duddingston Loch. Description of the Loch, . . . 165 



,, Temperature Observations, . . .166 



,, Pelagic Entomostraca, .... 166 



,, Shore Invertebrates, . . . .167 



(8) Loch Doon. Description of the Loch, . . . 169 



„ Temperature Observations, . . .170 



,, Pelagic Entomostraca, . . . .170 



„ Shore Invertebrates, .... 172 



(II) Lochs of the Second Series. 



(1) Loch Ness. Remarks on the Loch, 



,, Pelagic Entomostraca, 



(2) Loch Oich. 'Remarks on the Loch, 



,, Pelagic Entomostraca, 



(3) Loch Lochy. Remarks on the Loch, 



Pelagic Entomostraca, 

 General List of the Crustacea observed in the various Lochs, 



Notes on some of the Species : — 

 The Amphipoda, 

 The Isopoda, 

 The Copepoda, 

 The Ostracoda, 

 The Cladocera, 



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 . 178 

 . 179 



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 189 

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