994 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



9. CYPRIA EXSCULPTA (Fischer). 

 Plate LXVIII, figs. 6-9. 



Cijprk elegantula Lilljeborg, De Crustaceis ex ordinibus tribus, 1853, p. 206. 



Cypris punctata rar. striata Zenker, Monog. der Ostracoden, Wieg. Archiv. f. 

 Naturg., XX Jahrg., I, 1854, p. 77, pi. iii. 



Ci/pris slnolata Brady, A Monog. of the recent British Entonios., Trans. Linn. 

 Soc, XXVI, Pt. 2, 1868, p. 372, pi. xxiv, figs. 6-10. 



Cyprix e.vsrulpta Fischer, Beitrag zur kenntniss der r»straroden, Abhdlg. der 

 math. phys. Klasse der k. bayr. Akad. d. Wiss., VII, 1855, p. 18, pi. xix, 

 figs. 36-38. 



Cypria, r.rseulpta Brady and Norman, A Monog. of the marine and freshwater 

 Ostraeoda, See. I, Trans. Royal Dublin Soc, 1889, p. 68, pi. xi, figs. 1-4.— 

 Sars, Oversigt af Norges Crustaceer nied, etc., Christ. Vid. Selsk. Forhd., 

 No. 1, 1890, pp. 24-25. — Kaufmann, Die Ostracoden der Umgebung Berns, 

 Mittlg. d. n'aturf. Ges., 1892, p. 2; Bern. — Turner, Freshwater Ostraeoda of 

 the United States, Report State Zool. of Minn., 1895, p. 305, pi. lxx, figs. 1-8; 

 pi. Lx.xii, fig. 3. — Hartwig, Die Krebstiere der Provinz Brandenliurg, 

 Naturw. Wochenschrift, XI, 1896, p. 321. — Sharpe, Cont. to a Knowl. of the 

 X. American f. w. Ostrac. incl. in the Fam. Cytherida? and C'ypridida', Bull. 

 111. State Lab. N. H., IV, 1897, p. 465, pi. xlvii, fig. 4.— Lienenklais, 

 Erster Beitrag zur Kenntniss der Ostracodenfauna des Regierungs-bezirks 

 Osnabriick, 12 Jahresber. d. naturw. Vereins zu Osnabriick f. d. Jahr 1897, 

 p. 109. — Stenroos, Das Tierleben im Nurmiiirvi-See, Helsingfors, 1898, p. 

 226. — Kaufmann, Cypriden und Darwinuliden der Schweiz, Revue Suisse 

 de Zool., VIII, 1900, p. 330, pi. xx, figs. 4-6; pi. xxiii, figs. 17-27; pi. xxxi, 

 fig. 24. 



Length, 0.60 111111.; height, 0.88 111m.; width, 0.26 mm. 



This species is seemingl}' as widely distri})uted as the ubiquitous 

 Cypridops'is vidua. It may be readily distinguished by means of the 

 mesh work of longitudinally parallel and anastomosing lines, which 

 extend over the entire surface of the shell (tig. 8). 



Those in possession of the U. S. National Museum were collected 

 April 12, 1892, at First Sister Lake, Ann Arbor, Michigan, by Prof. 

 H. L Smith. Received by the Museum, December 13, 1892. Dis- 

 tribution, world wide. 



2. Subgenus PHYSOOYPRIA. 



a Left shell higher than right. Terminal short seta- of second foot about twice a 



long as terminal segment piistuloxa Sharpes 



aa Left shell longer than right. Terminal short set;e of second foot only al)Out as 

 long as terminal segment inequivahn Turner 



2S. CYCLOCYPRIS Brady and Norman, 1889 



Cyprix AucTORUM, 1785-1820. 



Monondns Jurine, Histoire des Monocles qui se trouvent aux environ.^ de 

 Geneve, 1820. 



CypHa Zenker, INIonog. der Ostracoden, Wieg. Archiv. f. Naturg., XX Jahrg., 

 I, 1854. 



Cydocypris Brady and Norman, A Monog. of the marine and fresli-water Ostra- 

 eoda, Sec. I, Trans. Royal Dublin Soc, 1889, p. 70. — Vavra, Monog. der 

 Ostrac. Bohnien, Arch. Naturw. Durchforsch. v. Bohmen, VIII, 1891, p. 67. 



