II Richardson — Isopods of the Bermudas. 301 



plates on the ventral side extending from the margin inwards in the 

 form of lamellae, those of the fifth segment being longest and largest, 

 but not meeting in the median line, being a little distance apart. 



The legs are simple, ambulatory. 



Three specimens were collected by Mr. J. M. Jones at the Ber- 

 mudas, and about twenty more by Prof. A. E. Verrill and party at 

 the same locality in 1898. Others were collected in 1901 at Long 

 Bird Is., Bermudas. 



Tylos niveus Budde-Lund. 



Tylos niveus Budde-Lund, Crust Isop. Terr., p. 278, 1885. Dollfus, Bull. Soc. 

 d'Etudes Scientifiques de Paris, xiith year, p. 8, pi. i, fig. 4a, 1890. 



Hab. Bermudas (Dollfus). Also Key West (Budde-Lund). 



Family Oniscidae. 

 Porcellio laevis Latr. 



Porcellio Icevis Latreille, Hist. Nat. des Crust, and Insectes, vii, p. 46, 1804. 

 Porcellio degeerii Audouin and Savigny, Descript. de TEgypte, p. 289, pi. 



xiii, fig. 5. 

 Porcellio eucercus Brandt, Bull. Soc. Imp. d. Moscou, vi, p. 177, 1833. 

 Porcellio syriacus Brandt, Bull. Soc. Imp. d. Moscou, vi, p. 178, 1833. 

 Porcellio musculus Brandt, Bull. Soc. Imp. d. Moscou, vi, 1833. 

 Porcellio cinerascens Brandt, Bull. Soc. Imp. d. Moscou, vi, p. 178, 1833. 

 Porcellio dubius Brandt, Bull. Soc. Imp. d. Moscou, vi, p. 178, 1833. 

 Porcellio poeyi Guerin, Comptes Kendus, p. 132, 1837. 

 Porcellio urbicus Koch, Deutsch. Crust., p. 36. 

 Porcellio fl a vi pes Koch, Berichtig, etc., p. 206, pi. 8, fig. 97. 

 Porcellio eubensis Saussure, Mem. Soc. pliys., Geneve, xiv, p. 477, pi. v, fig. 35, 



1858. 

 Porcellio sum ichr a sti Saussure, Mem. Soc. phys., Geneve, xiv, p. 478, pi. v, 



fig. 36, 1858. 

 Porcellio cotillce Saussure, Mem. Soc. phys., Geneve, xiv, p. 478, pi. v, fig. 37, 



1858. 

 Porcellio aztecus Saussure, Mem. Soc. phys., Geneve, xiv, p. 479, pi. v, fig. 38, 



1858. 

 Porcellio mexicanus Saussure, Mem. Soc. phys., Geneve, xiv, p. 479, pi. v, fig. 



39, 40, 1858. 

 Porcellio Icevis Budde-Lund, Crust. Isop. Terrestria, p. 138-141, 1883. (See 



Budde-Lund for synonymy and full reference.) 

 Porcellio Icevis Dollfus, Bull Soc. d'Etudes Scient. de Paris, xiith year, p. 4, 



1890. 



Habitat, Bermudas, collected by George Brown Goode. Ber- 

 mudas (Dollfus). Distribution world-wide. 



