RECENT BRITISH OSTRACODA. 



305 



however, I again met with, it in the lakes at Rothley and at Belsay in Northumberland ; 



}lr. Robertson has more recently taken it at Cumbrae; and it also occurs abundantly in 

 a gathering taken by my brother, Mr. Alfred Brady, in a pond on Wand -worth Common. 

 In many respects this handsome species agrees with C.vircns, but it is sufficiently 

 distinct. The oblique end view (fig. 36) is especially characteristic. The shell is also 

 much more strongly punctate than that of C. virens, the colour deeper, the setffl of the 

 abdominal rami more crowded. The Westmoreland specimens arc light olivaceous 

 brown, those from Northumberland and Cumbrae are deep green; the Wandsworth 

 specimens are more variable, and present an intermediate appearance. The figure and 

 description of C. elliptica given in the 'Natural History of British Entomostraca ' 

 would apply tolerably well to the present species; but Dr. Baird has kindly compare* I 

 one of my specimens of C. obliqua with those of C. elliptica preserved in the Brit Mi 

 Museum, and considers the two to be distinct. 



s 



5. Cypris elliptica, Baird. 



Cypris elliptica, Baird, Trans. Berw. Nat. Club, ii. p. 152, 1846; Brit. Entom. p. 158, tab. rix. fig. 12. 



"Shell nearly elliptical, of a light green colour, clouded with darker patches of the 

 same colour on the sides of the shell. Valves glabrous, except round the edges, which 

 are beset with Ions hairs. Pilaments of inferior antennae long. Pond at Highgate 



July 1846." 

 I do not know this species, except from Dr. Baird's description quoted above. 



6. Cypris ptjnctillata, Norman. (Plate XXVI. figs. 1-7, and Plate XXXVI. fi 



Cypris cuneata, Baird, Proc. Zool. Soc. Lond. 1850, p. 255, pi. xviii. (Ammlosa) figs. 22-2 L 



9 * „. . -r to/>o _ aq wi n fiox 11-14: and 



punctillata. Norman, Ann. & Ma 



Valves oblong, subovate, tumid. Tbe anterior border is broad, well rounded and 

 armed on both valves with a series of eigbt sharp teeth ; the posterior narrowed, ronndc ,. 

 and bears near the ventral angle of the right valve four or five spin*. ' °^ ° 

 which is mueh lonzer than the rest. Dorsal margin boldly arched, highest at is an cm 



Seen from above 



third; ventral margin nearly straight, with a slight sinuation 



carapace is broadly ovate pointed in ^— « SStSZSZ 



the middle. The ventral aspect is marked by a «™ or cuneat 



formed by the depressed margins of the two valves End v, w ^ubpyi ^ 



the height and width equal. Internally the front am h ndei m ^ 



produced into broad lamellar plates. Lucid spot about seven, ^ 



obliquely near the centre of the valve, The surface is Inch* beset n 



marked by rather large closely set round pittmgs (fig. b). ^01 i 



Length A in., heiirht A in. 



±/ength ^ m., height A in. , , „, Eli ,. di an d mo re recently by the 



First found at Duddingston Loch, Edinburgh, by Dr. Ban d, an 



»T. A. M. Norman at Sedgeneld, Uurnam. immature specimens, the 



This fine species was originally described by ^»« u thc adult 



m« «,— *- t,„: „„„t tn designate the lateial aspect 01 



name cuneata beius meant to desi 



