H. Richardson — Isopods of the Bermudas. 293 



First pair of antennae with the first joint of the peduncle long ; 

 second joint half as long as first ; third joint equal in length to first ; 

 flagellum of five joints reaches the post-lateral margin of the head. 



Second pair of antennae extend to the middle of the first thoracic 

 segment. 



Thoracic segments subequal. Lateral margins straight. Epimera 

 distinctly separated from segments. 



First abdominal segment long, a little longer than any of the 

 thoracic segments, with two suture lines. Terminal segment very 

 convex, surface smooth, posterior margin widely rounded. Uropoda 

 not extending beyond tip of terminal segment. Inner branch some- 

 what pointed at its extremity, margin smooth. Outer branch widely 

 rounded and crenulate on the posterior edge. 



Legs similar, all ambulatory, with small curved dactyli. 



A number of specimens were collected at the Bermudas in 1876-7, 

 by George Brown Goode. 



Type in Peabody Museum, Yale University. Cat. No. 3250. 



VALVIFERA. 



Family Idoteidae. 

 Idotea marina (Linnaeus). 



Oniscus marinus Linnaeus. Fauna Suecica, p. 500, 1761 ; Syst. Nat. (ed. xii), 



p. 1060, 1766. 

 Oniscus tridens Scopoli, Entom. Carniolica, p. 415, 1763. 

 Oniscus balticus Pallas, Spie. Zool. (9), p. 67, pi. iv, fig. 6, 1772. 

 Stenosoma irrorata Say, Journ. Acad. Nat. Sci. Philad., h p. 423, 1818. 

 Idotea tricuspidata Desmarest, Diet, des Sci. Nat., xxviii, p. 373, pi. xlvi, fig. 



11, 1823. 

 Idotea irrorata Milne-Edwards, Hist. Nat Cr. , iii, p. 132, 1840. Verrill and 



Smith. Invert. Vineyard Sci., pp. 22, 275, pi. v, fig. 23, from Report U. S. 



Comra. Fish and Fisheries, i, pp. 316. 569, 1873. Harger, Rep. U. S. Fish 



Comm., pt. 6, p. 343, pi. v, fig. 24-26, 1880. 

 Idotea marina Miers, Journ. Linn. Soc. Lond., xvi, p. 25-31, 1883. (See 



Miers for synonymy. ) 



Hab. Bermudas, at the Flatts Inlet, collected by A. E. Verrill and 

 party. Also British Isles ; Kattegat ; Baltic ; Dutch coast ; coast 

 of France; Mediterranean; Black and Caspian Seas; Atlantic coast 

 of North America, from Nova Scotia and the Gulf of St. Lawrence 

 to North Carolina. South America at Desterro and Rio Janeiro, 

 Brazil ; New Zealand ; lied Sea ; Java. 



