76 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



in the Irish Sea on the homeward journey. It has already 

 been recorded from this neighbourhood and about Puffin 

 Island by Mr. Thompson. 



Anomalocera pater sonii was found rather plentifully in 

 a gathering taken off the south of Ilockall Bank, and 

 again in one taken off the south-east end of the Island of 

 Anticosti. This species, though generally distributed in 

 the waters of the North Atlantic, North Sea, and Mediter- 

 ranean, does not appear to have been recorded from any 

 locality south of the Mediterranean. Its northern limit is 

 Greenland. 



Parapontella brevicoriiis was found only once, in the 

 collection between the Isle of Man and Liverpool. 



Acartia clausii occurred in nearly all the collections 

 made between Liverpool and lat. 56° 8' N., long. 38° 6' 

 W. In a few of the gatherings it was by far the most 

 common species. Between lat. 56° 8' N., long. 38° 6' W., 

 and lat. 49° N., long. 67° 45' W., not a single specimen 

 was observed, but in the collection made from the latter 

 position to 90 miles from Quebec, it was again fairly 

 common ; this so far appears to be the western limit of its 

 distribution. 



Acartia longiremiz is also apparently a widely distri- 

 buted species, and was found in many of the qollections. 



Acartia laxa, easily distinguished from both the above 

 species by the presence of spines on the posterior lateral 

 angles of the cephalothorax, was taken in the Gulf of St. 

 Lawrence, opposite the Island of Anticosti, but in no 

 subsequent gathering. North of the latitude of the Cape 

 Yerde Islands this species has not been previously 

 recorded, so that the present collection shows a consider- 

 able extension of its distribution. A fourth species of 

 Acartia, found in the St. Lawrence, appears to be new, 

 and is described below as A.forcipata, n. sp. 



