H. Richardson — Isopods of the Bermudas. 305 



Head large, produced in front in a prominent rounded projection. 

 Eyes very small, obscure, and situated about the middle of the lateral 

 margin. The external antennae, with a flagellum of two joints, ex- 

 tend to the middle of the first thoracic segment, and are geniculate 

 at the articulation of the third and fourth joints. 



The thoracic segments are subequal in length. The seventh seg- 

 ment is abruptly narrower than the preceding six, and not wider than 

 the first two abdominal segments. The seventh thoracic and the 

 first and second abdominal segments have the lateral parts or epi- 

 meral plates undeveloped. The first six thoracic and the third, 

 fourth and fifth abdominal segments have the lateral parts lamellarly 

 expanded, so that the regular outline of the body is preserved, the 

 third abdominal segment not being narrower than the six thoracic, 

 whose lateral portions extend down laterally beyond the seventh 

 thoracic and the first and second abdominal. 



The terminal abdominal segment is quadrangular, with the pos- 

 terior margin produced in a median rounded lobe. The uropoda 

 extend but a short distance beyond the epimeral plates of the fifth 

 abdominal segment. The outer branch is broad, flattened and round ; 

 the inner branch is smaller and narrower, and posteriorly rounded. 



There are but six pairs of legs, those of the seventh thoracic seg- 

 ment being wanting. 



A few specimens were collected by A. E. Verrill and party at the 

 Bermudas in 1898, and at Castle Island in 1901, under stones, in dry 

 places. 



Type in the Peabody Museum, Yale University.. Cat. No. 3224. 



Family Trichonisaidae. 



Actoniscus ellipticus Harger. 



Aetoniscus ellipticus Harger, Am. Jour. Sci. (3), xv, p. 373, 1878 ; Proc. U. S. 

 Nat. Mus., ii, p. 157, 1879; Report TJ. S. Fish Comm., pt. vi, p. 309, pi. i, 

 fig. 3, 1880. 



Hab. Bermudas, collected by G. B. Goode, 1876-7 (one specimen 

 of a brown and yellow mottled color) ; and near Hungry Bay, 

 Bermudas, near salt water under decayed sea-weed and stones, col- 

 lected by A. E. Verrill in 1901. Savin Rock, near New Haven ; 

 Stony Creek, Long Island Sound. 



Trans. Conn. Acad., Vol. XI. 20 January, 1902. 



