670 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



rounded lobe. The outer braneli of the uropoda is large, broad, 

 flattened, with rounded margins; the inner branch is smaller and 

 narrower, and rounded posteriorly. 



There are onl}^ six pairs of legs, the appendages of the last thoracic 

 segment being wanting. 



UROPODIAS BERMUDENSIS Richardson. 



Uwpudias hermudensiK Ru'Hakuson, Trans-;. Conn. Acad. Sciences, XI, 1901', pp. 

 304-305, pi. XL, tigs. 59-60. 



Locality. — Castle Harbor, Bermudas, under stones in dry places. 



Bod}' very convex, al)le to be contracted into a ball. Surface smooth. 

 Color uniformly light brown. 



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

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



Fig. 709.— Ur(ji'Odias BEKMrDENsis. <(. Head and first thoracic segment, x (52. b, Abdomen 



AND last two thoracic SEGMENTS. X 62. 



margin. The external antenna', with a flagelluni of two joints, extend 

 to the middle of the first thoracic seginent, and are geniculate at the 

 articulation of the third and fourth joints. 



The thoracic segments are subequal in length. The seventh segment 

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

 than the first two abdominal segments. The seventh thoracic and the 

 first and second abdominal segments have the lateral parts undevel- 

 oped. 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 segment, the lateral portions of 

 which extend down laterally beyond the seventh thoracic and the first 

 and second abdominal segments. 



The terminal abdominal segment is (luadrangular, with the posterior 

 margin produced in a median rounded lolxv The uropoda extend but 

 a short distance beyond the lateral parts of the fifth abdominal seg- 



