61 



BIOLOGICAL INVESTIGATIONS. 



During August and September a number of stations was 

 visited, and by the aid of the " Evadne " material was collected for 

 the purpose of indicating the nature of the bottom and surface 

 life to be obtained during these two months. 



In August, in the northern part of the region, larval d(!capods 

 were abundant, the Zoea and Metazoea of Porcellana particularly 

 occurring in large numbers. Copepods formed the bulk of the 

 catches in September, the commonest taken being Acartia clausi. 

 Teniora longicornis, and Centropages hamatus were also plentiful. 

 Isias clavipes was taken at Station 2 only, and there it occurred 

 in large numbers, most being caught by the bottom net. Evadne 

 nordmanni was taken at ten stations and was most abundant at 

 Station 2. Sagitta was taken by the surface net at every station 

 with the exception of St. Andrew's Bay, and there it was got in 

 the bottom net. 



With regard to the material obtained by the bottom net and 

 dredge, the following facts are of interest. The richest haul of 

 Echinoderms was made at Station 2. In St. Andrew's Bay 

 Ophiura ciliaris was obtained in exceedingly large numbers. 

 The undermentioned Copepods, although recorded for adjacent 

 waters, are new to Northumberland : Cyelopicera gracilicauda, 

 Asellopsis hispida, and Bradya typica : — 



Station 1, 4th Sept., 1911, 25 faths. E. J S. of Cullercoats. — Surface and 



Bottom. 

 STATION 2, 22nd Sept., 1911, 3 p.m., 32 faths., 8 mis. E. by S. of Cullercoats, 



drifting South with flood tide. — Surface and Bottom. 

 STATION 3, 16th Sept., 1911, 4 p.m., 10 faths. N.N.E. of Newbiggin. — 



Surface and Bottom. 

 Station 4, 17th Aug., 1911, 14 faths. N. of Pinnacles and S.E. of Holy 



Island. — Surface and Bottom. 

 Station 5, 17th Aug., 1911, 12 faths., passing through Wide Opens, Fame 



Islands . — Surface. 

 Station 6, 16th Sept., 1911, 11 a.m., 10 faths., immediately S. of Inner 



Fame. — Surface and Bottom. 



