CRUSTACEA OF NOETHUJIBERLAND AND DURHAM 355 



CvTHERURA GiBBA (O. F. Miiller). 



Bei"wick-on-T\veed and Seaton Sluice, fine and abundant 

 (A. M. N.) ; near the mouth of several Northumberland rivers 

 (G. S. B.) N. 



CvTHERURA CORNUTA G. S. Brady. 



Berwick-on-Tweed (A. M. N.) ; between tidemarks at 

 Boulmer, Northumberland (G. S. B.) N. 



Cytherura SELLA G. O. Sars. 



This is C. cuneata $ and C. flavescens % of Brady. 

 Common between tidemarks and in estuaries. N.D. 



Cytherura acuticostata G. O. Sars. 



Tidemarks, but not common ; also river Blyth and off Holy 



Island ; Hawthorn and Castle Eden in 20 fathoms (G. S. B.) 



N.D. 

 Cytherura striata G. O. Sars. 



Cythenira qnadrata Norman is the female of this species. 



Common between tidemarks, amidst the fine weeds and 



Corallina ; as well as dredged. N.D. 



Cytherura angulata G. S. Brady. 



Tidemarks, and dredged, but a much scarcer species than 



the last ; also in estuaries, as those of the rivers Blyth and 



Wansbeck (G. S. B.); Seaton Delaval, tidemarks (A. M. N.) 



N.D. 

 Cytherura undata G. O. Sars. 



This is seldom abundant, but distributed ; more usually in 



the coralline zone, but also in estuaries, as those of the rivers 



Wansbeck and Blyth (G. S. B.) N.D. 



Cytherura producta G. S. Brady. 



Off the Durham coast, and at the mouth of the Aln 

 (G. S. B.) N.D. 



Cytherura nigrescens (Baird). 



The commonest Cytherura between tidemarks, where it may 

 be met with almost everywhere. N.D. 



Cytherura concentrica Brady, Crosskey and Robertson. 

 Seaton Delaval and Hartlepool (G. S. B.) N.D. 



