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 prasinus 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. C'ytheridea torosa is another 
brackish Ostracod, and it seems to be more restricted in its dis- 
tribution than any of the species previously mentioned. C'ythere 
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 awrantia 
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 mediterranea 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 

1 Catalogue of the Amphipoda and Isopoda of the Firth of Clyde. By 
David Robertson, F.L.S., ete Part I., p. 13 (1888), 

