RECENT BRITISH OSTRACODA. 



411 



simiated; the valves are produced laterally, so as to form, at the infero-postral angle, a 

 sort of projecting ala. Outline, as seen from above, compressed hastate, greatest breadth 

 in the middle, and equal to rather more than one-third of the length ; anterior extremity 

 obtusely pointed, posterior rectangular, mucronate. End view ovate Surface coarsoh 

 punctate; areola as in the preceding species, with the same hair-like lines radiating from 

 its borders. Colour pale or deep golden yellow. 

 Length -fa in . 



Hab. Birterbuy Bay, 10 fathoms, in mud, and in shell-sand from South AY ales (G. S. B.) ; Lerwick 

 Shetland, Peterhead (Mr. D. Robertson) ; the Minch [Mr. J. G. Jeffreys) ; Plymouth, and in rock- 

 pools, Arran, N.B. (Rev. A. M. Norman). 



Well characterized by its excessively compressed dorsal outline, the posterior angula- 

 tion, and the coarse punctation'of the shell, also by the very prominent beak of the 

 supero-posteal angle. I have had no opportunity of examining the animal of this special ; 



I seen any distinction in the carapaces, such as is usually charact eristic of 



sexes. 



3. Cytherura striata, G. 0. Sars. (Plate XXXII. figs. 2G-29, 02, 64, 05.) 



Cytherura striata, G. O. Sars, loc. cit. p. 74. 



British type. Distribution : Recent— Norway, Great Britain, Ireland. Fossil— Glacial, Norway, Scot- 

 land, Ireland. 



Carapace of the female, seen laterally, elongate sub quadrangular, about equal in 

 height throughout; greatest height equal to less than half the length, evenly rounded in 

 front, produced behind into a large obtusely rounded median process; superior margin 

 nearly straight in the middle, inferior gently sinuated, and ending behind in an obtuse 



le. Outline, as seen from above, oblong, sides nearly parallel, width equal 

 than half the length, pointed in front; posterior extremity almost rectangular, acum 

 in the middle. End view ovate, very tumid below. The male very narrow and e on 

 almost thrice as long as high, very tumid behind. The shell is very distinctly longitu 

 Anally striated, with circular pittings in the grooves (fig. 62) ; areola obsolete- 



col 



llowish. 

 Length -fc 



** Northumberland coast, 46 fathoms, Birterbuy Bay, 10 fathom, and in <M~"T *J^J. 

 (G. S. B.) : Lerwick and Cumhrac (Mr. D. Robertson); the Mmch (Mr J. f^^^^t 



Mr 



M. Norman) 



*■ Cytherura lineata, n. sp. (Plate XXXII. figs. 30-31, 07.) 



Carapace of the female, as seen from the side, subovate length |^Mk» 

 tl-an twice the height, evenly rounded in front, produced into a *»*££~ 

 P^inence behind, iorsal margin gently arched, ventral neari, £«* J-J-JJ 

 ""hind in a minute tooth. Outline, as m* *»*«* "*£££ t££Z 

 ^out twice as Ion, as broad, obtusely pointed in front, "^^f^^J^Z 



ather more elongated and compressed, hut in other respects 



tumid. The male is r 



Vol. xxvi. 



