RECENT BRITISH OSTRACODA 



459 



■ 



claws unequal, one large, the other very short and slender. Terminal claw of third 

 foot long and slender, finely ciliated on the anterior margin; the preceding joints not 



ciliated. 

 Length -jt in. 



Hab. Isle of Skye, Herm, and Plymouth (Rev. A. M. Norman). 



4. Paradox ostom a pulchellum, G. 0. Sars. (Plate XXXV. figs. 41, 42.) 



Paradoxostoma pulchellum, G. O. Sars, loc. tit. p. 95. 



Carapace of the female much compressed; seen from the side, nearly semicircular, 

 rather more tapered in front than behind ; greatest height in the middle, and equal to 

 rather less than half the length. Extremities rounded, the anterior rather the narrower 

 of the two; superior margin evenly arched, inferior very slightly sinuated in the middle. 

 Outline, as seen from above, much compressed, nearly four times as long as broad. Shell 

 pellucid, yellowish, with deep-black or violet dendritic markings scattered im .-ularh 

 over the dorsum and centre of the valves. " Third joint of the upper antenme scarcely 

 shorter than the preceding, and longer than the following ; last two subequal, their united 



'^ 



ths not shorter than the preceding one. Lower antennae very slender, bearin 

 11 terminal claw. Jaws and feet almost as in P. abbreviation. Male unknown 



Length -At in. 



O uxi 5 



Guernsey, Herm, and Stornoway {Rev. A. M. Norm 



A very distinct and pretty species, well worthy of the name bestowed upon it by Sars. 

 The colouring of the specimens collected by Mr. Norman does not exactly agree with 

 Sars's description (« in medio vero fascia lata transversali colore saturate obscure-violaceo 

 instructed though in some cases there is an indication of a transverse band; but ven 

 little stress can be laid upon this point, especially in the present genus. 



5. Paeadoxostoma obliqtjtjm, G. 0. Sars. (Plate XXXV. figs. 18-21 .) 



Paradoxostoma obliquum, G. O. Sars, loc. cit. p. 97. . 



Ca ra pace of the female tumid, seen fro. the ***-»!**2**£ 



extremity rounded, much 



the middle, equal to more than half the length. Antcnor e»», ■_ 

 mwow™I s ™«WW nhlinuelv truncate, its upper angle produced , super 



niarg 



posterior obliquely truncate, i »^~ ° * ^ inferior gentl , 



-v ag iy arched, sloping steeply in front, where it a so a ^ ^ ^ ^ 



convex. Outline, as seen from above, ovate, folly twice , _ 



nearly circular. The right valve is of a shape ^'fj^ ^n^own. Shell 

 overlapping on the antero-dorsal and postero-ventral mar m . 

 smooth, pellucid, fawn-coloured, without any maculae. 

 Length J- 5 - in. 



in oyster-ooze num w * ■ 



«. ITO*. A. M. Norman) ; Shetland (M 



wuuuu oi sKye, ana in uae-puui» <** x»- — * 



D. Robertson) . lv Qne spec i me n (Stran- 



Of this very well-marked species I have been able to . ^ {q ^ 



»), and the animal was not in sufficiently good prestation 



