CRUSTACEA. 81 



CIRRirEDIA. 



BALANIDAE. 



256. Balaxus tixtixabulum zebka Darwin. 



Balanns tintinnahulum var. (4) zebra Darwin, Mon. Cirrip., 

 Balanidae, 1854, p. 195, pi. 1, fig. g. "Ships arriving from 

 Bengal and China." 



Mass. — Boston on vessel. 



257. Balani's amfhitrite Darwin. 



Bah inns amphitrite Dainvin, Mon. Cirrip., Balanidae, 1S54, 

 pp. 240 & 614, pi. 5, figs. 2a-2o. Enumerates many localities in 

 warmer temperate and tropical seas. 



On whales and bottoms of sliijis, but probably does not live 

 long after arriving on New England coast. 

 Mass. — Cape Cod; Vineyard Sound. 



258. Balanus eburneus Gould. 

 Ivory barnacle. 



Balanus eburneus Gould, Invert. Mass., 1841, p. 15, \A. 1, fig. 

 6. [Massachusetts.] Darwin, Mon. Cirrip., Balanidae, 1854, 

 l)p. 248 & 614, pi. 5, figs. 4a-4d. 



In brackish and fresh water as well as salt. 



From Salem, AEass., southward ; Long Island Sound. 



259. Balanus porcatus Costa. 



Balanus 2^orcatus Costa, Hist. nat. Test. Brit., 1778, p. 249. 

 "British coasts." 



Balanus jyorcatus Darwin, Mon. Cirrip., Balanidae, 1^54, pp. 

 256 & 615, pi. 6, figs. 4a-4e. 



Shallow water to 150 fathoms. 



Me. — Eastport; Bay of Fundy; off Seguiu Island; Casco Bay. 

 Gulf of Maine ; Jeffreys Bank ; Cashes Ledge ; Stellwagen 

 Bank ; Georges Bank. 



