I80PODS OF NORTH AMERICA. 231 



duced; those of the seventh segment produced. The epimera almost 

 reach the posterior angles of the segments. 



Terminal segment of abdomen subtriangular or subcordate. Urop- 

 oda much shorter than the terminal abdominal segment; inner branch 

 scarcely shorter than the outer branch. Legs long; the first six pairs 

 gradually increasing!}" longer; those of the seventh pair abruptly very 

 much longer than the others. The basis of the four posterior pairs 

 furnished with a carina. Ungulre long, those of the first pair mani- 

 festly shorter than the others; those of the seventh pair manifestly 

 longer than the others. 05 



OLENCIRA PRiEGUSTATOR (Latrobe). 



Oniscus prifgustalor LATROBE, Trans. Amer. Philos. Soc., V, 1802, p. 77, pi. i. 

 Cymothoa pnvymlator SAY, Jour. Acad. Nat. Sci. Phila. , I, 1818, pp. 395-396. 

 Olencira lamarkii LEACH, Diet. Sci. Nat., XII, 1818, p. 351. DESMAREST, Consid. 



Gen. Crust, 1825, p. 307. MILNE EDWARDS, Hist. Nat. Crust., Ill, 1840, 



p. 264. 

 Olencira prtegustator SCHICEDTE and MEINERT, Naturhistorisk Tidsskrift (3), XIII, 



1881-1883, pp. 152-154, pi. x, figs. 6-9. RICHARDSON, American Naturalist, 



XXXIV, 1900, p. 221; Proc. U. S. Nat. Mus., XXIII, 1901, pp. 528-529. 



Localities. Potomac River; York Spit, Virginia; Dividing Cove; 

 St. George's Island, Maryland; Fort Monroe, Head of Cockrell Creek, 

 Hampton Creek, Lower Chesapeake Bay; Cape Charles, Virginia; off 

 Great Wicomico; Pensacola and St. Mary's River, Florida; Mobile, 

 Alabama; Winyah Bay, South Carolina (mouths of menhaden); Zoo- 

 logical Park, Washington City (on bug-fish); Crisfield, Maryland; 

 Florida; Georgetown, District of Columbia. 



Parasite of Brevoortia patronus; Brevoortia tyrannm; bug-fish. 



attingentia; paris quarti, quinti, sexti angulum annuli spatio. rnagno, subsequali, non 

 attingentia. Pedes parium sex priorum per paria sensim longitudine paulum cres- 

 centes; paris ultimi ceteris manifesto longiores et paulo tenuiores. Ungulse paris 

 primi longiuscula?, crassiusculse; paris secundi, tertii, quarti, quinti longse vel per- 

 longse, crassiusculre, longitudine subsequales; paris sexti longae vel longiusculse; 

 crassiuscuhe; paris septimi breviusculee, subtenues. 



Cauda ad basin obtecta, longior quam latior plus sesqui (8:5), quam truncus cum 

 capite multo brevior (4:3). Annuli quinque priores sensim longitudine paulum 

 crescentes. Latera annulorum quinque priorum paulum rotundate dilatata, excavata, 

 vix marginata; annuli primi et secundi oblique truncata; annuli tertii, quarti, quinti 

 per paria sensim profundius atque magis angulate emarginata. 



Annulus analis cordatus, ad basin impressus, obscure carinatus, multo latior quam 

 longior (6:5), ceteris annulis caudalibus conjunctis manifesto longior (10:9). Pedes 

 anales annulo anali manifesto longiores (9:8); ramus interior quam exterior valde 

 brevior et vix latior, pone medium angustatus, sublaminatus, apicem annuli vix 

 superans; ramus exterior angustatus, subfalcatus. 



Long. 21, 5 mm. 



Color ex griseo olivaceus, annulo anali cum pedibus analibus flavicans. SCHKEDTE 

 AND MEINERT, Nat. Tidsskr. (3), XIII, 1881-83, pp. 145-146. 



See Schioedte and Meinert for characters of genus, Nat. Tidsskr. (3), XIII, 

 1881-83, pp. 150-151. 



