424 COROPHITM. 



the minnows," it is found one to a hundred of the 

 Gammari. 



Johnston found it at Berwick, and presented the speci- 

 men to the British Museum under the name of G. 

 punctatus. The G. punctatus of Say, which we take to 

 be identical with Stimpson's A. virescens, has, in both 

 Say's and Stimpson's description, parts sufficiently dis- 

 tinct to separate it from the British species. 



A. littorina is to be found most probably all round our 

 coast. Our friend, the late Mr. Geo. Barlee, sent it to us 

 from Skye, and the Rev. Geo. Gordon from the Moray 

 Frith. We have seen a specimen taken by the Rev. 

 A. M. Norman in the Outer Skerries Harbour, Shetlands. 

 Dr. Johnston found it very common amongst confervae in 

 pools left by the tide near Berwick. Mr. Webster has 

 forwarded to us specimens from Tenby; and we have 

 found them common between the tide marks at Plymouth. 

 Professor Kinahan has taken it in county Clare, Ireland. 

 Mr. Jeffreys has also found it on the coast of Normandy, 

 but we do not remember its having been among the 

 Crustacea found by him on the coast of Italy. Mr. Rayner 

 has found at Hummock's Island, Basse's Straits, a speci- 

 men that appears to be identical with this species ; and 

 we can detect no character of sufficient importance that 

 will identify A. Plcta of Rathke, from the Crimea, as a 

 distinct species. 



We believe that this species frequently constructs its 

 nest by rolling together the edges of a leaf of growing 

 seaweed and cementing them together so as to form a 

 tube open at each end. We observed the fact some time 

 since but have not since verified it. Dr. Johnston de- 

 scribes the " burrows " of his G. punctatus as being from 

 one to two inches long, composed of pieces of seaweed, 



