304 H. Richardson — Isopods of the Bermudas. 



Family Armadillididae. 

 Armadillidium vulgare (Latreille). 



Armadillo vulgaris Latreille, Hist. Crust., vii, p. 48, 1804; Gen. Crust., i, p. 



71, 1806. Leach, Edinb. Encycl.. vii, p. 406. Lamarck, Hist. Nat. an. s. 



vert., v, p. 152, 1818. 

 Armadillo pihdar is Say, Ci'ust. United States, Journ. Acad. Nat. Sci., Philad., 



p. 432, 1818. 

 Armadillidium vulgare Budde-Lund, Crust. Isopoda Terrestria, pp. 66-68, 1885. 



Dollfus, Bull. Soc. d'Etudes Scient. de Paris, xiitli year, p. 4, 1890. Sars, 



Crust, of Norway, ii, pts. ix-x, pi. 80, pts. xi-xii, p. 189-190, 1898. 



Hal>. Bermudas, collected by G. B. Goode in 1876-7; and by A. E. 

 Verrill, in 1901, at Tucker's Island ; Bermudas (Dollfus). Common 

 in all parts of Europe and neighboring regions of Asia and Africa; 

 North America. 



Uropodias Richardson, gen. nov. 



Head with the front produced in a prominent rounded lobe. E}-es 

 small, obscure. External antenna?, with a flagellum of two joints, 

 the second joint the smaller of the two. 



First six thoracic segments with the lateral parts lamellarly ex- 

 panded. Seventh segment as long as the six preceding segments, 

 but with the lateral parts undeveloped, and not wider than the first 

 two abdominal segments, which likewise have the lateral parts or 

 epimeral plates undeveloped. Abdomen not narrower than thorax, 

 the lateral parts of the third, fourth and fifth segments being ex- 

 panded and continuing the regular outline of the body. The abdom- 

 inal segments equal in length and half as long as the thoracic 

 segments. Terminal segment quadrangular in shape, the posterior 

 margin produced in a median rounded lobe. The outer branch of 

 the uropoda is large, broad, flattened, with rounded margins ; the 

 inner branch is smaller and narrower, and rounded posteriorly. 



There are only six pairs of legs, the appendages of the last thoracic 

 segment being wanting. 



Uropodias bermudensis Richardson, sp. nov. 



Plate XL. Figures 59, 60. 



Body very convex, able to be contracted into a ball. Surface 

 smooth. Color uniformly light brown. 



