



RECENT BRITISH OSTRACODA 



JOT 



2. Cythere viridis, Miiller. (Plate XXVIII. figs. 40, 41, & 57-59; and Plate XXXV 1 1 1 



fig. 8.) 



Miiller, Entomostraea, p. 64. tab. vii. figs. 1, 2: Sars, Over§iet at' Nc-rgcs marine Ostrac 



p. 30. 



British type. Distribution: Recent — Norway, Great Britain, and Ireland. Fbi iii Raised Uracil 

 and glacial clays, Norway, Scotland, and Ireland. 



Very similar to the foregoing, but much smaller. Shell of the female, as seen from 

 the side, subreniform, slightly higher in front than behind, greatest height equal to two- 

 thirds of the length. Anterior extremity obliquely rounded ; posterior rather narrower, 

 rounded. Dorsal margin nearly straight, sloping gently backwards from the front, whoi 

 it is slightly angular; inferior distinctly sinuated in front of the middle. Been from 

 above, the outline is ovate, more sharply pointed in front than behind, about twice as Long 



Surface marked with numerous fine puncta, which are interspersed with small 

 tubercles. Colour olive or yellowish-brown. The shell of the male is mud, narrower 

 and more elongated. The animal itself is almost colourless. Last joint ol the upper 



broad 



much elongated, almost equal in length to the two preceding. Feet very -hort 



Copulative organs of the male subtriangular, the apical portion obtusely rounded. 

 Length -^ in., height A in. 



a 1 *" 5T 1X1 »» uoigm; 90 



x„e Minch, 15-60 fatl, {Mr. J. G.Jeffrey,) ; Shetland, Peterhead, Me of Man, and Cu.nhvae £ 



ison 



0. *U„ might very easily be passed over as the young of C. Me<r *«££,£ 

 the shell-characters are very constant, those of the amma -»«« <£"~J 



distinct. It is not by any means so common a species 



the northern British shores 



but it may often have escaped notice on account of its small size. 



3. Cytheee pellucida, Baird. (Plate XXVIII. tigs. 22-26, 28.) 



. - m, o flr , Oversifft af Norges marine Osti.ic. p. 91. 



Cytkere pellucUa, Baird, Brit. Entcn. p. 173, «. » fifr 7 ,>», O J^^ ,,.,,„_ 



BHtish t yP e. Dl s TMBUT .o N = /W-Norway, Great JJ^JJ*. 1 



Kaised heachea and „acia, Cays, ^^^^ SUDq nadrangular, ,,ual 



Valves of the female compressed, oblong , as seen ^ ^ ^^ ^.^ height 



in height throughout, rounded in front, an 8~ , )U j round od, posterior sub- 



equal to less than half the length. Anterior niarg* £" q^ ^^ ^ ^^ 



truncated rounded off below, almost J^fT '^^ Outline, as seen from c>— 

 arched, ventral distinctly sinuated in front of them _ ^ ^ ^ ^ 

 compressed ovate, greatest width near the ;P°» tel ^ clonga „,l than the 



of the length. End view hroadly ovate. ine """^ The centre of each valve is 

 female, and has the supero-posteal angle more P ^ ^ ^ rfu ji ower nes 



marked with a distinct transverse sulcus, and some ^ ^ ^^ _ ^ surface 



ovities. The substance of the she ^ ^ ^ h ^ in 



thickly set, circular or often ooiom, i 



third 



the extremities 

 •ed with 



