184 



GAMMAlUUii:. 



AMPHIPODA. 



NATATOBIA. 



PHOXIDES. 



DARWINIA COMPllESSA. 



Sj^ecific character. Cejihalon produced to an obtuse point. Fourth seg- 

 ment of the pleon considerably narrower than the third. Superior antenna9 

 longer and stouter than the inferior. 



Length j'j inch. 



Danciiua campressa. Spenck Bate, Brit. Assoc. Eep. 1855, p. 68. Ann. 

 Nat. Hist. 1 ser. xix. p. 141, Feb. 1857. Cat. 

 Amph. Crust. Brit. Miis. p. 108, pi. xvii. fig. 7. 

 White, Hist. Brit. Crust, p. 176. 



The head is produced anteriorly to an obtuse point. 

 The body is much distended, and increases in breadth to 

 the third segment, whence it as gradually decreases pos- 

 teriorly. The tail is narrow, with the third segment 

 shorter than the preceding ; the three last segments are 

 extremely short, and generally lie folded, closely com- 

 pressed, beneath the body of the animal, a circumstance 

 which suggested the specific name. The eyes are round, 

 and situated between the superior and inferior antennae. 

 The superior antennae are about one-fourth the length of 

 the animal, but longer and more robust than the inferior ; 



