A HISTORY OF DURHAM 



was found in a pond at Sedgefield ' by Norman ; C. negUcta, Sars (N. in litt.) ; C. lactea 

 Baird (N. in litt.) ; C. zemiiri, Sars, of which Brady and Norman say in 1896, ' it is a British 

 species, having been found by A. M. N. in a pond at Fcrryhill in the county of Durham ' ; ' 

 6^. compressa, Koch,^ for which, under the name C puhficeus (Koch), Brady and Norman in 

 1889 give among other localities, 'pond in Lumley Dene, Seaton Carew Marshes, and 

 Sedgefield, all in the county of Durham ' ; C. zet/andica, G. S. Braiiy, with which C. IFiltneri, 

 Harting, is synonymous (N. in litt.) ; Ilyocypris gibba (Ramdohr) (N. in litt.) ; /. hriidyi, Sars 

 (N. in litt.) ; the rare marine species Pontocypris acupunctuta, Brady, 'off Marsden, Durliam, 

 10 fathoms (G. S. B.) ' ; Argillcecia cylindrUa, Bars, 'off Seaham and Marsden, Durham coast 

 (G. S. B.).' 



The family Cytheridae enriches the county with Cythere lutea, O. F. MuUer, ' abundant 

 in tide pools on the coasts of Northumberland and Durham,' ^ including C. virit/is, Brady (not 

 Mullcr), 'in tide-pools near Sunderland ' ;■* C. pcllucidti, Baird, on the union of which with 

 C. caitaneay Sars, and its distinction from C. confusa, Brady and Norman, the monograph of 

 1889 should be consulted ; C. tenera, Brady, 'off Seaham Harbour, Durham, 15 fathoms' ; 

 C. albomaculata, Baird, 'on the Durham coast '; ^ the blind mud-lark C. limicola (Norman), 

 Durham co.ast ; « C. (?) sanipunctata, Brady, off coast of Durham ; C. gihbosa, Brady and 

 Robertson, 'Seaton Carew Marshes'; C. borea/is, Brady, of which it is said that 'the only 

 British station in which this species has been found is at Seaton Carew, in the county of 

 Durham, on mud-covered rocks, near low-water mark (G. S. B.) ' ; C. quadridentata, Baird, off 

 coast of Durham ; C. ermuiata, Brady, off Durham ; C. tubercuhita, Sars, ' in 40 fathoms,' 7 

 this and the next five species from the same coast being referred to Cythere in 1889, but in 

 1896 transferred to Cythereis ; C. concinna (Johnston); C. finmarchlca (Sars); C. angulata 

 (Sars) ; C. dunelmensh (Norman) ; C. jonesii (Baird) ; the freshwater species Limnkythere 

 inopmata (Baird), from ' Hardwick Lake and Raby Park, county Durham (Rev. A. M. Norman); 

 Fulwell Cemetery, Gibside, and in a millstream at Hedworth, county Durham (G. S. B.) ' ; s 

 Cytheridea elongata^ Brady, ' in tide-pools at Sunderland,' ' in all probability a washed-up 

 specimen, as the valves were empty ' ; ' C. paptllota. Bosquet, off the coast of Durham ; C. 

 torosa (Jones), Sedgefield, in freshwater (A. M. N.);!" C. punctillata, Brady, Seaton Carew; 

 Eucythere dedtvis (Norman), Durham coast, including Eu. argus (Sars), from 'off Holy Island,' 

 and Eu. anglica, Brady, ' dredged off the Durham coast (G. S. B.) ' ; 11 Kritbe bartonensis (Jones), 

 off the coast of Durham ; Loxoconcha impreaa (Baird), rock-pools, Sunderland ; ^~ L. tamarindus 

 (Jones), ' in tide-pools, Sunderland,' as well as in 30 fathoms depth off Durham coast ; i^ L. 

 guttata (Norman), deep water off Durham coast ; 1* L. multifora (Norman), Durham coast ; >* 

 L. pusi/Ia, Brady and Robertson, ' off Seaton Carew, co. Durham, 4 fath.' ; Xestoleberh 

 depressa, Sars, Durham coast ; '« Cytherura nigrescens (Baird), ' in rock-pools at Sunderland ' ; 17 

 C. producta, Brady, ' off the coast of Durham ' ; C. clathrata^ Sars, coast of Durham ; C. acuti- 

 coitata, Sars, ' off Holy Island ' ; I8 Cytheropteron latissimum (Norman), Durham coast ; '^ C. 

 nodosum, Brady, off coast of Durham ; Bythocythere constricta, Sars, B. turgida, Sars, and B. simp/ex 

 (Norman), all three off the aforesaid coast, the last having also been taken off Holy Island in 

 45 fathoms ; -° Pseudocythere caudata, Sars, off Holy Island ; -^ Sclerochilus contortus (Norman), 

 Durham coast. 2' 



To the family Paradoxostomatidae are assigned Paradoxoitoma variabile (Baird) ; P. normani, 

 Brady ; P. hibernicum, Brady ; P. hodgei, Brady ; P. fexuosum, Brady ; all from various depths 

 off the coast of Durham ; and Machierina tenuissima (Norman), taken off the same coast 

 between 1 5 and 30 fathoms. 



From the vast and ancient group of the Ostracoda we pass to another which is also very 

 extensive, but less adapted for fossil preservation. The Copepoda are not enclosed in a bivalvcd 



' Trans. R. Dublin Sue., ser. 2, v. 730. 2 Loc. cit., p. 728. 



' Mon. Brit. Oilrac., p. 396. * Loc. cit., p. 397. 



5 Loc. cit., p. 403. « Loc. cit., p. 406. 



^ Ibid. 8 Loc. cit., p. 420. 



" Loc. cit., p. 422. 10 Loc. cit., p. 426. 



'1 Loc. cit., pp. 430, 431, 475. 12 Loc. cit., p. 434. 



" Loc. cit., p. 436. 1* Ibid. 

 '° Loc. cit., p. 450 (compared with Mon. 1889, p. 185). 



'• Mon. Brit. Ostrac, p. 438. 17 Loc. cit., p. 440. 



'8 Loc. cit., p. 446. 19 Loc. cit., p. 448. 



2" Loc. cit., p. 451 21 Lqc. cit., p. 454. 

 '* Loc. cit., p. 456. 



163 



