440 MR. G. S. BEADY ON 



A few specimens which I doubtfully refer to this species have 

 occurred to me on the fronds of Laminaria saccharina and other 

 fuci at Sunderland and Ryhope. 



Genus ZAUS, Goodsir. 



1. Zaus spinosus, Goodsir. 



Z. spinosus, Goodsir, Edinbro' New Phil. Journ. (1842) ; 

 Claus, die frei lebend. Copep. (1863). Boeck, Oversigt 

 Norges Copep. (1864). 



Common on fuci, and especially on the fronds of Laminaricc, 

 in tidal pools and beyond low water mark. Roker, Ryhope, 

 Sunderland, Cullercoats, &c. Shetland (Rev. A. M. Norman). 



Genus THALESTEIS, Claus. 



1. Thalesteis longimana, Claus. 



Frequent on the smaller weeds and on LaminaricB in tidal 

 pools ; Roker, Sunderland, Ryhope, &c. Also in the open sea, 

 but more rarely. 



2. Thalesteis helgolandica ? Claus. 



On LaminaricB in tide pools at Roker. Not common. 



3. Thalesteis haepactoides, Claus. 



In the surface-net off Grimsby and Teesmouth. 



4. Thalesteis Clausii, Norman. 



T. Clausii, Norman, Last Shetland Dredging Report. 



Frequent on Laminaria saccharina and other weeds in tide 

 pools. Ryhope, Sunderland, Roker, Whitley, &c. 



Genus DACTYLOPUS, Claus. 

 1. Dactylopus tisboides, Claus. 



On Laminaria saccharina at Roker and Ryhope ; scarce. Abun- 

 dant in brackish pools at Seaton Sluice. 



