of the Fishery Board for Scotland. 321 



Habitat. — Off St Monance, several specimens, and one or two from 

 other parts of the Forth. This species seems to have been previously 

 recorded from only two places in Scotland — St Magnus Bay, Shetland, 

 and the Minch (see Monograph by Brady and Norman). I have, however, 

 also observed it among some material dredged last year (1889) among the 

 Orkney Islands, 



Pontocypris trigonella, G. O. Sars. 



Pontocypris trigonella, Brady, op. cit., p. 387, pi. xxv. figs. 



31-34; pi. xxxviii. fig. 3. 

 Pontocypris trigonella, Brady and Norman, op. tit., p. 109 pi 



xxii. figs. 18-25; pi. xxiii. fig. 6. 



Habitat. — Largo Bay and other parts of the Estuary, but not very 

 common. 



Bairdiid^e. 



Bairdia inflata, Norman. 



Bairdia inflata, Brady, op. cit., p. 388, pi. xxvii. figs. 9-17; pi 



xxxviii., fig. 5. 

 Bairdia inflata, Brady and Norman, op. cit., p. 112. 

 Habitat. — Off St Monance, rare. 



• Cytherid^e. 



Loxoconcha viridis (Miiller). 



Cythere viridis, Miiller, Entom., p. 64, pi. vii. figs. 1, 2 (1785), 



non Brady. 

 Loxoconcha elliptica, Brady, op. cit., p. 435, pi. xxvii. figs. 38, 39; 



45-48; pi. xl. fig. 3. 

 Loxoconcha viridis, Brady and Norman, op. cit., p. 185. 

 Habitat. — Granton Harbour (David Robertson). This is a brackish- 

 water species, and may have accidentally got into the harbour. 



Loxoconcha multifova (Norman). 



Cytheropteron multiforum, Brady, op. cit., p. 449, pi. xxix. figs 



38-42. 

 Loxoconcha multifova, Brady and Norman, op. cit., p. 185. 

 Habitat. — Granton Harbour (David Robertson). These two species of 

 Loxoconcha were observed by Mr Robertson in material collected by him 

 in Granton Harbour twenty years ago. 



Cythere finmavchica (G. O. Sars), <$ %. 



Cythere finmarchica, Brady, op. cit., p. 410, pi. xxxi. figs. 9-13. 

 Cythere finmarchica, Brady and Norman, op. cit., p. 163. 

 Habitat. — Off St Monance, frequent. 



Cythere ichitei (Baird). 



Cythereis whitei, Baird, Brit. Entom., p. 175, t. xx. figs. 3, 3a 



(1850). 

 Cythere whitei, Brady, op. cit, p. 416, pi. xxx. figs. 21-24. 

 Cythere ichitei, Brady and Norman, op. cit., p. 169. 

 Habitat. — Largo Bay, rather rare. 

 Cytheve (?) semiovata, n. s. (Pi. XII. figs. 1-2). 



Shell seen from the side semiovate, dorsal and ventral margins nearly 

 parallel ; dorsal margin a flattened curve sloping downwards posteriorly, 

 and forming with the nearly straight ventral margin a somewhat bluntly 

 angular extremity; anterior end sharply rounded below, then curving 

 obliquely upwards and backwards till it merges in the dorsal margin. 



Seen from above, the width is greatest near the anterior end, but varies 



x 



