The Scottish Naturalist. 
79 
Genus. — Mytilia Gosse. 
194. M. tavina Gosse. In Firth of Tay, Fife and Forfar. 
195. M. poecilops Gosse. In tide-pools. 
Firth of Tay, Invergowrie, Forfar. Common. 
196. M. producta Gosse. In tide-pools. 
Firth of Tay, Fife. Rare. 
197. M. teresa Gosse. Lucky Scalp, Firth of Tay. Marine. 
Rare. 
Genus.— Cochleare Gosse. 
198. 0- turbo Gosse. Numerous in Black Loch, Perth ; else- 
where not common. 
Ykvlwn.—FETERODINIDM. 
Genus. — Peterodina Ehr. 
199. P. patina Ehr. Common in ponds and ditches and lochs. 
Perth ; Forfar : Fife. 
200. p. valvata IIucU. In lochs (Lundie, Black Loch, Stor- 
mont), Perth and Forfar. Not rare. 
201. P. clypeata Ehr. Plentiful in salt-water. Firth of Tay. 
202. P. truncata Gosse. Rea Loch, Perth. Very rare. 
203. P. truncata Gosse. Var. In Loch Lundie, and pond 
near Dundee. Rare. 
Family. RACHIO NID^. 
Genus.— Brachionus Ehr. 
204. B. nrceolaris Ehr. Var. In ponds, ditches and marshes. 
Perth ; Forfar ; Fife. Common. 
205. B. Mlilleri Ehr. In salt-water pools, in Firth of Tay. 
(Marine). Plentiful. 
206. B. rubens Ehr. In ponds and marshes. 
Fife ; Forfar. Rare. 
207. B. pala Ehr. In ponds and ditches. 
Forfar and Perth ; sometimes plentiful, but usually not 
common. 
208. B. angularis Gosse. In ponds and ditches. 
Forfar. Common. 
209. B. tridens. In salt-water tide-pools. 
Firth of Tay. Rare, marine. 
