NO. 1347. FRESH- WA TER OSTRA COD ASH A RPE. 



ii7'.» 



3. HERPETOCYPRIS REPTANS Baird. 

 Plate LXV, figs. 1-4. 



('uprl^ rcpfans Lilljeborg, De Crustaceis ex Ordinihus tribui. 185S n ]-'s pi 

 XI, fig8. 21-23; pi. XII, figs. 7-9.-BRAnY, A Moiiog. of the recent British 

 Entomos., Trans. Linn. Soc, XXVI, Pt. 2, 1868, p. 370, pi x.xv (ig. 

 lO-U; pi. XXXVI, fig. 4.-VAVRA, Monog. der Ostrac. Br.hniens Arch 

 Natiirw. Durchforsch. v. Bohmen, VIII, 1891, p. 86, fig. 28.— Wierzeis»ki 

 Susswasser-Cru8taceeu und Rotatorien, ge-^ainmelt in Argentinien Anz .ler 

 Akad. der Wiss. in Krakau, Pt. 5, 1892, p. 187.-ZAcnARiAs, Fauni.stischc 

 Mitteilangen,.Forsch. d. biol. Station zu Plon, Pt. 2, VI, 1894, p. 63. 



Erpetocyprh reptnns Brady and Norjian, A Monog. of the marine and frenh-water 

 Ostracoda, Sec. I, Trans. Royal Dublin Soc, 1889, p. 84, pi. xiii, tig. 27.— Cko- 

 NENBERG, Beitrag zur Ostracoden-Fauna der Umgegend von Mc.scoii, I'.uil. 

 Soc. Imp. d. Moscou, No. 3, 1894, p. 15, pi. vii, fig. 14.— Riciiaru, S.ir la faiine 

 des eaux doucea des Avores, Bull. Soc. Zool. de France, XXI, 1896, p. 173. 



Herjietori/pris reptans Sars, Oversigt af Norges Crustaceer, Christ. Vid. S<'lsk. 

 Forhd., No. 1, 1890, p. 17.— Claits, Beitriige zur Kenntniss der Susswa-sser- 

 Ostracoden, Arb. Zool. Inst. Wien, X, 1892, pi. iv, figs. 13-14.— K auk. ma. \x, 

 Die Ostracoden der Umgebung Berns, Mittlg. d. Xaturf. Ge.sell. in Bern, 

 p. 74, 1892. — Hartwig, Verzeichniss der lebenden Krebsthiere der Pruvinz 

 Brandenberg, Statt. handsch. Mittlg., 1893, p. 25; Berlin.— Dadav, Fauna 

 Regni Hungarise, 1897, p. 6; Budapest.— Liexenki.ais, Erster Beitrag zur 

 Kenntniss der Ostracoden fauna des Regiernngs bezirks ()snal)nick, 12 

 Jahresber. d. naturw. Vereins zu Osnabriick f. d. Jahr. 1897, p. 111.— 

 Schneider, Die Tierwelt der Nordseeinsel Borkum, Ostracoda, Abhand. 

 Naturw. Verein, XVI, 1898, p. 161; Bremen. — Kaukmaxx, Cypriden und 

 Darwinuliden der Schweiz, Revue Suisse de Zool., VIII, 1900, p. 282, pi. 

 XVI, figs. 1-3; pi. xviii, figs. 21-26. 



Dimensions, American: Length, 2.00 mm.; height, o.so mm.; 

 breadth, 0.65 mm. European: Length, 2.50 mm.; height, l.ln mm.; 

 breadth, 0.0<) mm. 



Shell somewhat brownish yellow, with a darker patch as seen from 

 the side, smooth and glistening, yet rather opaque, and co\-ered with 

 very small papillre. 



Seen from the side the shell is more than twice as long as wide (Hg. 

 1), the upper and lower margins nearly parallel. The lower margin is 

 weakly sinuate. Seen from above (iig. 2) the shell is a narrow oval, 

 rather sharply pointed anteriorly, blunter posteriorly, and widest just 

 back of the middle. 



The second antenna^ are stout, terminal claws about as long as the 

 penultimate segment. Natatory setai short, extending about to the 

 base of the terminal segment. The two spines on the lirst maxilhiiv 

 process are stout and toothed. 



Terminal claw of the second foot more than twice as long as (lie 



terminal segment and strongly curved (tig. 3). Furca ratiier stout 



(tig. 4), about sixteen times as long as wide, broad at base, slightly 



curved, and the dorsal edge armed with five combs of coarse teetli. 



Proc. N. M. vol. xxvi— 02 (35 



