FAUNA OF THE OUTEB WESTERN AREA OF THE CHANNEL. o51 



COROPHIIDAE. 

 Erichthonius abditus (Templeton). 

 Three specimens at Position 45. 

 Depth, 47 fath. 



CAPEELLIDAE. 

 Phytisca marina, Slabber. 

 One male at Position 3. 

 Depth, 40 fath. 



Protella phasma (Montagu). 



At Position 3, two females, one with young in pouch. 



„ 6, three males ; five females, some with young. 



„ 56, twelve immature specimens. Length, 3-5| mm. 

 Depth, 40-49 fath. 



ISOPODA. 



ANTHURIDAE. 

 Anthura gracilis (Montagu). 



One specimen at Position 7. 



Depth, 42 fath. 



A particular point of interest attached to this specimen is the fact 

 that it was found deeply intruded, head downwards, in a tube of the 

 Polychaet worm Sabellaria sjnnulosa, the only part visible being the 

 ends of the uropoda lying nearly flush with the opening of the tube. 

 With these peculiarly shaped organs lying in this position, their 

 appearance was so deceptive to the eye that they might easily be 

 mistaken at a rough glance for the anterior region of the original 

 occupant of the tube. Whatever significance may be attached to this 

 resemblance, the main fact goes to suggest that the animal was preying 

 on the Sabellaria. This inference is supported by the view that the 

 oral parts of the Anthuridae point to a parasitic habit, though the mode 

 of parasitism has not hitherto been stated (cp. G. 0. Sars, 132, p. 44). 

 The peculiar shape of the animal and the unusual form of the uropoda 

 would seem well adapted to association with any such host. 



AEGIDAE. 

 Rocinela damnoniensis. Leach. 



At Positions 1, 5, 10 (one each), 11 (two), vii (one). 

 Depth, 40-49 fath. or over. 



