TRANSACTIONS 



OF THE 



NATURAL HISTORY SOCIETY 



OF 



NORTHUMBERLAND, DURHAM, AND NEWCASTLE- 

 UPON-TYNE. 



Notes on Entornostraca found at the Roots of Laminarim. 

 By George S. Brady, M.D., LL.D., D.Sc, F.R.S. 

 (Plates I and 2). 



Read February 24TH, 1903. 



The much-branched and spreading roots or hold-fasts of 

 Laminarice. afford shelter to many small animals, chiefly 

 perhaps Crustaceans, but also Mollusca, Annelida, and other 

 groups. On this account they supply an interesting hunting 

 ground to the micro-zoologist. By hooking up the tangles 

 with the stones to which they are attached, then detaching 

 the roots and immersing them for a short time in a bucket 

 full of sea water the animals are tempted out of their retreats, 

 and may easily be collected by pouring off the water through 

 a fine mushn net. In this way I have frequently made 

 collections, and I propose now to give lists of the species 

 which have been found in three different localities, — Holy 

 Island (Northumberland), Gare Loch (Clyde), and Roker 

 (Durham). These three habitats are distinguished opposite 

 the names of the various species by the initials H, G, and R. 

 Among these Laminarian gatherings I have met with no 

 species quite new to science, though there are several new to 

 our district and otherwise imperfectly known, respecting which 

 I have given some notes and drawings. I have added also 

 figures and description of a new Ostracod taken during the 

 first "Stanley" expedition in 1901. But this is supple- 

 mentary, and is not at all a Laminarian species. 



Some observations on the early stages of growth of a very 

 common Copepod — Harpacticus chelifer, O. F. Miiller — have 

 seemed to me worth brief notice and illustration. Very young 



