THE ROOTS OF LAMINARI^. 



Genus CYCLOPS. 



Cyclops salinus, G. S. Brady (Plate I., figs. 1-3). 



This species was described by me in Vol. XIII. of the 

 " Natural History Transactions of Northumberland and 

 Durham," from a single imperfect specimen taken at Aln- 

 mouth. Those here noticed — of which I give two amended 

 figures — were got at Holy Island and at Gare Loch (Firth of 

 Clyde). In each case only one example was found, so that 

 this, like other marine forms of Cyclops, seems to exist in 

 comparatively small numbers. Marine conditions do not 

 appear favourable to the constitution of the genus. 



It will be noticed that the jointing of the anterior antenna 

 (fig. 2) is here much more distinct than in the Alnmouth 

 specimen. I have been able also to figure the fifth foot 

 (fig. 3) which, as to its terminal joint, much resembles 

 C. cequoreus : the basal joint is, however, much larger than 

 in that species. 



OSTRACODA. 



Fam. cypridida. 

 Genus ARGILLCECIA. 



Argilloecia propinqua, sp. nov. (Plate IL, figs. 1-8). 



Shell elongated, subovate, greatest height in the middle, 

 equal to more than one-third of the length ; seen from the 

 side, evenly rounded in front, posterior extremity obtusely 

 pointed below the middle, dorsal margin evenly arched, 

 steeply curved behind, ventral slightly sinuated about the 

 middle; seen from above the outline is somewhat cuneate, 

 the greatest width situated posteriorly and equal to the 

 height, lateral margins moderately curved, converging rather 

 abruptly at the front, which is obtusely pointed ; posterior 

 extremity broadly arcuate, right valve rather larger than the 

 left, overlapping behind, but in front slightly overlapped by 

 the opposite valve : surface of the shell quite smooth ; colour 

 dull white. Length '52 mm. 



