72 
The Scottish Naturalist. 
73. N. saccigera Ekr. Loch Lundie, Rosemont, Forfar 
Perth. Not common. 
74. N. naias Ehr. In lochs and marshy pools, near Blair- 
gowrie. Rare. 
75. N. lacinulata Ehr. This vigorous little creature is to be 
met with frequently in ponds and ditches. 
Perth, Forfar and Fife. 
76. N. CoUaris Ehr. Black Loch and Storrnont Loch, and in 
marshy pools. 
Perth and Fife. Not common. 
77. N. tripus Ehr. In ponds and lochs in Perth, Fife, Forfar. 
Common. 
78. N. ansata Ehr. In lochs, ponds and marshes; but not 
common. 
79. N. pilarius Gosse. Stormont Loch and Marlee Loch. 
Perth. Common. 
80. N. forcipata Ehr. In marshy pools and ditches. Not 
common. 
81. N. OVUlum Gosse. In my aquarium. 
Genus.— Taphrocampa Gosse. 
82. T. annulosa Gosse. In marshy pools. 
Perth ; Fife ; Forfar. Sparingly. 
Genus. — Pleurotrocha Ehr. 
83. p. constricta EJir. Common in Monk Mire, Stormont 
Loch and Black Loch, 
Perth. 
84. P. leptura Ehr. In marshy pools. 
Lundie. Not common. 
85. P. gibba Ehr. Midmill Pond, near Dundee. Rare. 
Genus. — Oopeus Gosse. 
86. 0. spicatus Huds. Black Loch, Perth ; only one specimen. 
87. G. labiatus Gosse. In Midmill Pond and in marshes. 
Forfar; Perth ; Fife. Not rare. 
88. C. pachyurus Gosse. Pretty numerous in marshy pools, 
on Tents Muir and in Lundie Loch. Not common. 
89. 0. Cerberus Gosse. Black Loch, Stormont Loch, and Rea 
Loch, and in marshy pools, Lundie. Not rare. 
