226 REPORT OF NEW JERSEY STATE MUSEUM. 



Armadillidium vulgare (Latreille). 

 Plates 67 and 68. 



Pill-bug. 



Armadillo vulgaris Latreille, Hist. Nat. Crust., VII, 1804, p. 48. "// est 



tres-coinmim." (France.) 

 Armadillidium vulgare Stebbing, Hist. Recent Crust. (Intern. Sci. Series 



LXXIV), 1893, p. 435. World-wide (reference). 



H. Richardson, Amer. Nat., XXXIV, 1900, p. 305. North America. 



H. Richardson, Proc. U. S. Nat. Mus., XXIII, 1901, p. 574. World- 

 wide. 



StoUer, 54th Rep. N. Y. State Mus., I, 1900 (1902), p. 2i3r. Syra- 

 cuse, N. Y. 



Paulmier, 58th Rep. N. Y. State Mus., IV, 1904, p. 184, fig. 58. Bay 



Shore, Long Island, and probably within New York City limits. 



H. Richardson, Bull. U. S. Nat. Mus., No. 54, 1905, p. 666, fig. 706. 



World-wide. (Washington, D. C. ; Syracuse, N. Y. ; Bay Shore, Long 

 Island; Woodside, Md.) 



M. J. Rathbun, Occas. Papers Boston Soc. N. Hist., VII, 1905, p. 47. 



(Massachusetts and Rhode Island.) 

 Armadillo pilularis Say, Journ. Acad. Nat. Sci. Phila., I, 1818, p. 432. North 



America. 

 Armadillo pilhdaris De Kay, N. Y. Fauna, Crust., VI, 1844, p. 52. (Evidently 



New York.) 

 Armadillidium pillulare White, Cat. Crust. Brit. Mus., XXV, 1847, p. lOi. 



United States (Say's material). 



Budde-Lund, Crust. Isopod. Terr., 1885, p. 66. New York. 



Armadillidium .pilulare Underwood, Bull. 111. Lab. N. Hist., II, 1886, p. 360. 



New York and Pennsylvania. 



Description. — Body well convex, oblong, ovate, length twice 

 its width, and capable of being rolled up into a ball. Head 

 broader than long, with straight front, and epistome projecting 

 but slightly beyond it. Eyes composite, rounded, small, and 

 placed on anterior angles of head laterally. First antennae 

 rudimentary, of three segments, obscure. Second antennae with 

 first segment short, second segment about four times length of 

 second, third segment about half length of second, fourth seg- 

 ment one and one-half times longer than third, and fifth seg- 



