24 The Scottish Naturalist. 
Genus. — Rotifer Schranh 
44. R. macrurus Schr. In ponds, ditches, and marshes. 
Common. 
Fife, Forfar, Perth. 
45. R. macroceros Gosse. In lakes and ponds ; fond of fixing 
their feet to the leaves of Myriophyllum and other aquatic 
plants. Common. 
46. R. tardus Ehr. In marshes, ponds, and lakes. Fairly 
common. 
Perth, Forfar, Fife. 
47. R. vulgaris Schr. In ponds and ditches and in sea-waters 
of the Tay. Common. 
Genus. — Actinurus Elir. 
48 A. Neptunius Ehr. In a ditch near Dundee. Very rare. 
Genus.— Callidina Ehr. 
49. 0. bidens Gcme. In marshy pools and ditches of green 
colour. Not uncommon. 
Perth and Forfar. 
50. 0. elegans Khv, In ponds and ditches among Conferva. 
Common. 
Perth, Fife, Forfar. 
51. 0. bihamata (Jo$&e. In marshy pools. Not common. 
Tents Muir. 
F A M I L Y.— ^1 D I N E T I D .E. 
Genus. — Adineta Hmhon. 
52. A. vaga Davis. Very rare in a small pool near Dundee. 
Order 3.— PLOIMA 
Family.— J/ / C R 0 C 0 D ID .E. 
Genus. — Microcodon Ehr. 
53. M. Clavus Ehr, Black Loch (rare). 
Family.—^ BPLANCHNID jE. 
Genus.— Asplanclina Gosse. 
54. A. Brightwellii Go^se. Rare in pond in Pitcaro Wood. 
