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Part III. — Thirteenth Annual Report 



3rd. Loohs in the Vicinity op Glasgow. 

 Possil Marsh. 



Thoiigh Glasgow continues to extend its boundaries on all sides, this 

 loch or marsh continues to exist and to be the ' happy hunting ground ' 

 for naturalists of all sorts. This loch was visited on the 2nd of October, 

 when a number of interesting Crustacea were obtained. Eurytemora 

 Clausii, Cyclops Thomasi, and Cyclops affinis, Attheyella pygmcea, 

 Ilyocryptus sordidus, Ceriodaphnia reticulata, and Chydorus globosus, are 

 some of the organisms observed in the gatherings from Possil Marsh. Of 

 the thirty-six species obtained five of them were Mollusca, ten were 

 Copepoda, eight were Ostracoda, twelve were Cladocera, and one a fresh 

 water Isopod, Asellus aquaticus. Many other things besides those named 

 were observed, such as Acaridse, Notonectidae, Coleoptera, Kotifera, 

 Infusoria, Diatoms, &c. It may be mentioned that this is only the second 

 time that Eurytemora Clausii has been obtained in a fresh water loch in 

 Scotland. 



Bardowie Looh. 



Bardowie Loch is about six miles north of Glasgow, and a mile and a 

 half from Milngavie, and the old Castle of Bardowie occupies a kind of 

 headland on the north side. The water is pure and clear, and numbers 

 of interesting things are to be obtained in it. Twenty-nine species of 

 Crustracea were identified in the gatherings from Bardowie Loch, and 

 among them were Cyclops phaleratus f Scapholeberis mucronata, and 

 Chydorus globosus. Two species of fresh water Polyzoa — Paludicella 

 Ehrenbergi and Plumatella repens — as well as a fresh water sponge, were 

 obtained in this loch. Mollusca were not very plentiful at the time of my 

 visit, one or two of the common Pisidia and Planorbi being the only 

 species obtained. Among the Crustacea obtained there were Asellus 

 aquaticus, eight species of Copepoda, four species of Ostracoda, and 

 sixteen species of Cladocera. 



St German's Loch. 



This little loch is now so much surrounded by houses and hidden by 

 trees and walls, that only those acquainted with the district can find their 

 way to it. A stranger to the district can hardly believe that a loch cau 

 exist in the neighbourhood, but not only does such a loch exist, it is also 

 still large enough to be the resort of numerous amateur anglers that come 

 to it from various parts of the surrounding district. Though personally 

 Unacquainted with the locality, I was favoured with the company of a 

 friend who has been familiar with Glasgow and its environs from his youth. 



I found St German's Loch to contain an abundant micro-fauna, but 

 there was scarcely so great a variety as in Possil Marsh or Bardowie 

 Loch. The common Asellus aquaticus and fresh water Gammarus were 

 both here, together with five species of Copepoda, three species of 

 Ostracoda, and thirteen species of Cladocera. One of the Cladoceran 

 species was the rare Leydigia quadrangularis (Leydig). I have obtained 

 this in only two other localities in Scotland. A form of Daphnia Jardini 

 was also obtained here. Only two species of Mollusca were observed 

 — viz., Planorbis albus and Physa fontinalis. Many other micro-organisms 

 belonging to other groups were noticed during the examination of the 

 gatherings that were collected at this time, but they were not identified. 



This completes the description of the Scottish lochs that form the 

 subject of the present Report. A Table (Table II.) is appended contain- 

 ing the names of all the organisms obtained and identified in this second 

 group of the lochs, similar to the Table appended to the lirst group. A 

 description, with drawings of some of the rarer Crustacea obtained in the 

 lochs included in both groups, is also added. 



