MAKINE ISOPODA OF NEW ENGLAND, ETC. 373 



The relations of tlie i^resent family with the SpJiceromidce appear to 

 be more close, but the structure of the mandibles and perhaps also that 

 of the maxillipeds, the fully segmented i^leon and the biramous uropods 

 seem to be characters of family value, which, however, a fuller investi- 

 gation of the boring Sphceromidce might go far to break down. 



Linmoria Leacli. 

 Limnoria Leacli, EdiuLurgh Encyc, vol. vii, p. "433" (Am. cd., p. 273), "1813-14," 



Mandibles with a nearly even chisel-like cutting-edge at the tip and 

 ' no molar process; maxillipeds elongate, with a well developed external 

 lamella and a five-jointed palpus; first thoracic segment large; uropods 

 with the outer ramus very short and almost obsolete. 



The above characters differ from those by which Leach separated this 

 genus from Cymothoa and the Sphceromidce, with which he associated it. 



Llmuoria lignorum White (Rathke). 



''Cymotlioa lignorum Eatlike, Skrivt. af Naturli. Selsk., v. 101, t. 3, f. 14, 1799'* 



(White). 

 Limnoria terebrans Leach, Ed. Encyc, vol. vii, j). '433' (Am. ed., p. 273), 



"1813-14"; Trans. Linn. Soc, vol. xi, p. 371, 1815; Diet. Sci. nat., tome 



xii, p. 353, 1818. 

 Samouelle, Eut. Comp., p. 109, 1819. 

 Desmarest, Consid. Crust., p. 312, 1825. 

 Latreille, Regne Auim., tome iv, p. 135, 1829. 



Coldstream, Edinb. New Phil. Jour., vol. xvi, pp. 316-334, pi. vi, 1834. 

 "Hope, Trans. Ent. Soc. Lond., vol. i, p. 119" (B. & W.). 

 Thompson, Edinb. New Phil. Jour., vol. xviii, p. 127, 1835; Ann. Mag. 



Nat. Hist., vol. xx, p. 157, 1847. 

 Templeton, Loud. Mag. Nat. Hist., vol. ix, p. 12, 1836. 

 Moore, Charlesworth's Mag. Nat. Hist., n. s., vol. ii, p. 206, 1838; ibid., 



vol. iii, pp. 196, 293, 1839. 

 Edwards, Aunot de Lamarck, torn, v, p. 276, 1838 ; Hist. nat. des Crust., 



tom. iii, p. 145, 1840; Regne Anim. Crust., p. 197, pi. 67, f. 5, 1849. 

 Gould, Invert. Mass., i>p. 338, 354, figure, 1840. 

 Fleming, Encyc. Brit., 7 ed., vol. vii, p. 502, 1842. 

 Dekay, Zool. New York, Crust., p. 48, pi. ix, fig. 33, 1844. 

 "Kirby and Spence, Int. Entom., 5th ed., p. 238; 6tli ed., p. 203" (WMte.) 

 White, List Crust. Brit. Mus., p. 96, 1847; Brit. Crust. B. Mus., p. 68, 1850. 

 Dalyell, Powers of the Creator, vol. i, p. 241, pi. ixv, figs. 7-15, 1851. 

 Leidy, Jour. Acad. Nat. Sci. Phil., II, vol. iii, p. 150, 1855. 

 Gosse, Man. Mar. Zool., vol. i, p. 136, fig. 242, 1855. 

 Steenstrup and Liitken, Vidensk. Meddel., II, vol. ii, p. 275, 1861. 

 Hesse, Ann. Sci. nat., Zool., V, tome x, p. 113, 1868. 

 Jones, Trans. Nova Scotian Inst. Na,t. Sci., vol. ii, pt. iv, p. 99, 1870. 

 Verrill, Proc. Am. Assoc, 1873, p. 367, 1874. 

 Macdonald, Trans. Linn. Soc, II, Zool., vol. i, p. 67, 1875. 

 Andrews, Q. Jour. Mic Sci., II, vol. xv, p. 332, 1875. 

 Limnoria lignorum Wbite, Pop. Hist. Brit. Crust., p. 227, pi. 12, fig. 5, 1857. 

 Bate, Rep. Brit. Assoc, 1860, p. 225, 1861. 

 Bate and Westwood, Brit. Sess. Crust., vol. ii, p. 351, figure, 1868. 



