CRUSTACEA. 47 



ARTHROSTRACA. ISOPODA. 



ARMADILLIDIDAE. 

 Sow-bugs ; Pill-bugs ; Wood-lice. 



142. Armadillidium vulgare (Latreille). 



Armadillo vulgare Latreille, Hist. nat. Crust. Ins., an XII 

 (1804), vol. 7, p. 48. "Il kst tres-commun^." 



ArniadilUdiion commutation Brandt & Ratzeburg, Med. zool., 

 Berlin, 1S33, vol. 2, p. 81, pi. 13, figs. 1, 2, 3, A, B. 



Under lioards and stones, in gardens and cellars. 



Mass. 



R. I. — Providence. 



LIGYDIDAE. 



143. LiGVDA oceanica (Linne). 



Oniscus oceanicus Linne, Syst. nat., ed. 12, 17 67, vol. 1, pt. 2, 

 p. 1061. "Habitat ix Oceaxo." 



Hijia oceanica Kinalian, Nat. hist, rev., 1857, vol. 4, p. 279, 

 pi. 20, figs. 7-10. 



R. I. — Off Newport. 



TRICHONISCIDAE. 



144. AcTONiscus ELLiPTicus Harger. 



Actow'scus ellipticus Harger, Amer. journ. sci., 1878 (3), vol. 

 15, p. 373. "at Savix Rock, xeak New Havex, and also at 

 Stony Creek." Rept. U. S. coinmr. of fish & fisheries, pt. 6, 

 for 1878 (1880), p. 309, pi. 1, fig. 3. 



Conn. — Savin Rock & Stony Creek. 



145. Scyphacella arenfcola Smith. 



Scyphacella arenicola Smith. Rept. JJ. S. commr. of fish ife 

 fishe:it's, pt. 1, for 1871-1X72 (1873), p. 568 [274]. "Somers's 



