ON DREDGING OFF THE DURHAM AND N. -YORKSHIRE COAST. 197 



Dactylopus tenuiremis, nov. sp. 20 miles off Sunderland, 45 fa. ; and ofl' Red Cliff, 

 Staiths, and Robin Hood's Bay, 30-35 fa. 



nanus, nov. sp. 20 miles off Sunderland, 45 fa. ; muddy sand. 



cinctus, Glaus. Oft" Red Hill, 35 fii. 



Rhizothrix curvata, nov. gen. et sp. Off Robin Hood's Bay, 35 fa. 

 Jurinia minuta, nov. sp. Off Hawtliorn, 27 fa. 

 y/Cyclopkera nu/ripes, nov. sp. In many di-edgings, 3-5 miles off shore, in depths 

 / ^ of 20-35 fo. 



*Notodel2)hys agilis, Thorell. 1 specimen, off Hawthorn, 27 fa. 

 Lichomolgus fucicolus (Brady), In several dredgings from Marsden to Scarborough, 

 20-35 fa. 



liher, nov. sp. Off Marsden, Scarborough, and Hawthorn, 20-27 fa. 



Thorellii, nov. sp. Off Marsden, Hawthorn, and Robin Hood's Bav, 20-35 fa. 



y *Artotrorius orbicularis ?, Boeck. Off Red Cliff, Staiths, and Robin Hood's Bav. 

 / 20-35 fa. ^ 



y Byspontius Normani, nov. sp. 3 specimens taken, miles off Hawthorn, 27 fa. ; sand. 

 /^ Soknostoma scutatum, Brady and Robertson. Off Red Cliff, Staiths, Robin Hood's 

 ^r Ray, and Hawthorn, 27-35 fa. 



Ascomyzon calvum, nov. sp. Oft" Staiths, 30 fa. 

 y omatum, nov. sp. Off Scarborough and Robin Hood's Bay, 16-35 fa, 



/ The number of Copepoda noted in this list is 63, of -which 28 are new to 

 science, and 11 (marked here with an asterisk) are hitherto unrecorded as 

 British species. It is but right, however, to add that several of these, though 

 undescribed, were previously known to us. Still the result of the dredging in 

 this department is extremely interesting, more especially in the considerable 

 number of new species which it has brought to light belonging to the curious 

 groups called by Thorell Poecilostoma and Siphonostoma. The list of marine 

 Copepoda published by Mr. Brady in 1872, in the ' JS'atural-History Trans- 

 actions of JSTorthumberland and Durham,' and including all then known as 

 inhabiting the shores of those two counties, both littoral and pelagic, comprised 

 only 49 species ; so that our present Hst of 63 species taken over an area of 

 similar extent, and from dredged material only, must, we think, be looked 

 upon as highly satisfactory. 



The dissection and delineation of these minute' creatures is extremely 

 tedious, and we have not as yet been able to complete the work so far as to 

 warrant us in giving descriptions of the various new species. 



On the Polyzoa, Hydrozoa, and Spongozoa. By the Rev. A. M. Norman, M.A. 



POLTZOA. 



SciTipocellaria scruposa (Linn.). 



scabra ( Van Ben.). 



CeUularia Peachii, Busk. 

 Menipea ternata {Ellifi Sf Sol.), 

 Biigula avicularia {Pallas). 



purpurotincta, Norman. 



inabellata (J. V. Thompson), 



Murrayana (Bean). 



fruticosa, Packard. 



Flustra foliacea, Linn. 



truncata, Linn. 



Carbasea papyrea (Pallas). 

 Gemellaria loriculata (Linn.). 

 Membranipora pilosa (Linn.). 

 Flemingii, Busk. 



Lepralia reticulata, Macg. 



auriculata, Hassall. 



concinna, Busk. 



linearis, Hassall. 



ciliata (Linn,). 



nitida (Fahr,). 



Peachii, Johnst. 



ventricosa, Hassall. 



Cellepora avicularis, Hincks. 



ramulosa, Linn. 



dichotoma, Hincks. 



Crisia eburnea (Linn.). 



denticulata (Lamk.). 



Crisidia cormita (Linn.). 



