Malcomson. — Recent Ostracoda of Belfast Lough. 261 



although they do not appear much worn ; but as several other species of 

 Ostracoda, as well as Foraminifera, which usually inhabit deeper water, 

 have been found in tbis locality, I think some such supposition is ren- 

 dered likely. 



Cytbere (?) acerosa, Brady. Although extremely rare, this species seems 

 to be widely distributed in the deeper water outside Belfast Lough, hav- 

 ing been found in no less than five gatherings. 



Cytberldea subflavescens, Brady. Five or six typical specimens of this 

 extremely rare species have been found. 



Xioboconcba cuneiformis, n. sp. Brady MS. (Plate xxv., figs. 1-2.) Only % J m 



one specimen, a male, of this species has been found. Carapace of male, as 

 seen from the side, oblong, subrhomboidal, higher in front than behind, 

 greatest height equal to half the length ; anterior extremity broad, 

 marked with a few radiating hair-like lines, well rounded below, and 

 sloping steeply backwards above, where it forms an obtuse angle with 

 the dorsum ; posterior narrow, and obliquely rounded below ; superior 

 margin straight, inferior slightly sinuated in front of the middle, and 

 produced into a thin laminar process behind, which is continued round 

 the posterior border. Outline, as seen from above, cuneate, greatest 

 width in front of the middle, and scarcely equal to height ; acutely 

 pointed in front, somewhat more obtusely behind. Shell pellucid, 

 polished, thickly covered with very fine puncta, and a few distinct 

 elevated papillae. 



Cytberopteron IMControsiense, B. C. and R. Only a single valve of this 

 species has been found. 



Bytbocytbere pavo, n. sp. Brady MS. (Plate xxv., figs. 5-7.) Only six 

 specimens of this species have been seen, all from the dredging off Black 

 Head. It has been previously found by Dr. Brady and the Rev. A. M. 

 Norman, but has not been described. Carapace of female, as seen from 

 the side, oblong, subquadrilateral ; nearly equal in height through- 

 out ; height equal to half the length, extremities rounded ; superior 

 margin straight, inferior slightly sinuated in the middle. Seen from 

 above ovate, greatest width behind the middle, and nearly equal to half 

 the length ; anterior extremity muncronate, posterior evenly rounded. 

 End view triangular, with rounded angles ; height slightly greater than 

 width. Surface of shell thickly covered with fine punctures and large 

 white papillae. Length, 1.100th inch. Dr. Brady informs me that 

 most of his specimens have a slight lateral crest, which mine do not 

 show. 



Cytberideis foveolata, Brady. (Plate xxv., figs. 8-12.) This species, 

 which has not been previously found in Britain, seems to be confined to 



