354 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW, 



OSTRACODA. 



Very few of the Ostracoda require special notice. The fine 

 species Cypris incongruens was moderately common in some of 

 the pools; being moderately large and of a light cream colour, 

 they were quite conspicuous in the gathering when transferred 

 from the hand-net to the bottle. Cyprinotus iwasinus was also 

 moderately common. This species is perhaps more familiar to 

 Glasgow students under the name of Cypris salina. Cypridopsis 

 aculeata is another Ostracod that was more or less frequent. 

 As the name implies, the shell of this species is covered with stiff 

 bristles. Candona Candida is, though a common species, a very 

 pretty one — the surface of the shell is a smooth, glossy white. It 

 is also a somewhat interesting species from the fact that it seems 

 to be equally at home in water that is more or less brackish 

 and in perfectly fresh water; the form of the shell is also 

 subject to a good deal of variation. It has never been found 

 living in any truly marine locality. Cytheridea torosa is another 

 brackish Ostracod, and it seems to be more restricted in its dis- 

 tribution than any of the species previously mentioned. Cythere 

 gibbosa and Loxoconcha pusilla are also brackish-water species, but 

 they differ from the others already referred to in this way — the 

 distribution of those first-mentioned species may be described as 

 extending from the brackish water towards fresh-water con- 

 ditions, whereas the distribution of these two appears to extend 

 more or less towards marine conditions. Xestoleberis aurantia 

 and some others are also in the same category with Cythere 

 gibbosa as regards general distribution. 



Amphipoda. 



The three Amphipods mentioned in the list appear to be all 

 generally distributed within the Clyde area wherever suitable 

 conditions prevail. Orchestia ineditei^^-anea appears, however, to 

 to be somewhat rare. Dr. Robertson mentions that he saw only 

 two Clyde specimens — one from the mouth of the Garnock (sent 

 by Mr. J. Smith), and one taken at the west end of Cumbrae.^ 

 The " hand " of the second Gnathopods is quite different in form 



^ Catalogue of the Amphipoda and Isopoda of the Firth of Clyde. By 

 David Robertson, F.L.S., etc Part L, p. 13 (1888). 



