ISOPODS OF NORTH AMERICA. 



263 



Fig. 275.— Livoneca redmanni. a, Maxii.- 



LIPED OF FEMALE. X 39. 6, SECOND MAXILLA. 



X 20i. c, Seventh leg. x 7. d, First max- 

 illa. X 39. e, Palp of mandible, x 20J. 



The abdomen at its base is not a)>ruptly narrowei- tiian the tiiorax. 

 It tapers to a narrower (wtreniity. The first seo-uient is as wide as the 

 seventh thoraeic segment and is 

 partly eovered by it. The sixth 

 or terminal segment is rounded 

 posteriorly; it is T) mm. long and S 

 nnn. wide at the ])ase. The urop- 

 oda are mucli longer than the 

 terminal abdominal segment and 

 extend some distance (2 nnn.) be- 

 yond its extremity. The outer 

 branch is longer and narrower 

 than the inner l)ranch and has the 

 posterior extremity rounded. The 

 inner branch is broad at its pos- 

 terior end, which is oblicpiely trun- 

 cate, with the outer post-lateral 

 angle produced in a rounded lobe, 

 the inner angle being obtuse. 



The legs are all prehensile, 

 with long, curved dactyl i. The 

 basis of the last four pairs is produced in a low carina. 



LIVONECA OVALIS (Say). 



Cymothoa oralis Say, Jour. Acad. Nat. Sci. Phila., I, 1818, p. :594. 



Chjmothoa triloba De Kay, Nat. Hist. New York, Pt. 1, 1843, p. 46, pi. x, fig. 40. 



(?) Cymothoa olivacea De Kay, Nat. Hist. New York, Pt. 1, 1843, p. 47, pi. x, figs. 

 41-41a. 



Livoneca ovalis White, Cat. Crust. Brit. Mus., 1847, p. 109. — Harger, with Ver- 

 RiLL, Report C S. Coiniuis^sioner of Fish and Fisheries, Pt. 1, 1873, p. 572 

 (278), pi. VI, fig. 29.— Harger, Proc. U. S. Nat. Mus., II, 1879, p. 162; 

 Report U. S. Commissioner of Fish and Fisheries, Pt. 6, 1880, pp. 395-396, 

 pi. XI, fig. 67.— Richardson, American Naturalist, XXXIV, 1900, p. 222; 

 Proc. U. S. Nat. Mus., XXIII, 1901, p. 531. 



Localities. — New Haven, Connecticut; Thimble Islands; Long Island 

 Sound; Woods Hole, Massachusetts; Vineyard Sound; New York; 

 Patapsco River; Bonday's Wharf, Patapsco, Baltimore Cit}", Mar}-- 

 land; Charleston, South Carolina; Pensacola, Florida; St. Marys River, 

 Florida; Mobile, Alabama; Biloxi, Mississippi; Sand}- Hook Bay, New 

 -Jersey; Hunger's wharf, Virginia; Cliesapeake Bay; South Florida; 

 Long Island; Great South Bay, Long Island; Tolchester, Maryland. 



Parasite of the blue-lish Pomatomus saltntrix (from gills); Lagodon 

 rhomhoides (under gill cover); saw-fish Pristis seiniMiglttatus'., scup 

 Stenoto'inu.H chrysops (on gills); Tr(ich\irops crnrnen(>j)htJiali>ius (from 

 gill); trout Cynoscion regalisf (on gills); sun fish (on gills); Mtcropogon 

 undulatui^. 



