AMEIHA. 151 



are only slightly rounded, converge gradually towards the 

 narrowly rounded apex ; the joint is furnished with five 

 setpe, four of which spring from the distal extremity and one 

 from the proximal half of the outer margin, the marginal seta 

 and the one next the outermost of the terminal seta? are 

 small, but the other three are elongated (PI. XVII. fig. 3). 



The f Lircal joints are fully half as long as the last abdominal 

 segment. 



Habitat. Estuary of the Exe, near Starcross, June 9th, 

 1884 ; apparently rare. 



Remarks. The form just described resembles somewhat 

 the Ameira exigua, T. Scott, and may only be a variety of 

 that species ; but it differs to some extent in the proportional 

 lengths of the joints of the antennules, in the armature of 

 the mandible-palp, in the outer branches of the first pair of 

 thoracic feet being as long as the first two joints of the inner 

 branches, and in the joints of the inner branches being 

 different in their proportional lengths. Moreover, the arma- 

 ture of the fifth pair is distinctly different in the two species. 



AMEIRA LONGIPES, Boeck. 



1864. Ameira lonr/ipcs, Boeck, Oversigt fif Norges Copepoder, p. 49. 

 1880. Ameira lowgipes, Brady, vol. ii. p. 37, pi. liii. tigs. 1-10. 



Salcombe, June 1875. Between tide-marks at Exmouth, 

 June 188-1. Plymouth Sound, near Chequer Buoy ; three 

 miles north-west of Eddystone Lighthouse, and one or two 

 other places near Plymouth, August 1903. 



AMEIRA LONGiCAttDATA, T. Scott. 



1892. Ameira longicaudata, T. Scott, 10th Kept. Fishery Board for 

 Scotlaml, pt. iii. p. 250, pi. ix. tigs. 1-18. 



Rare in a gathering from outside the harbour at Fowey, 

 Cornwall, in -1 to 5 fathoms, bottom coarse sand, May 9th, 

 1903. 



AMEIRA GRACILIS, A. Scott. 



1896. Ameira (/rctcilis, A. Scott, Lancashire Sea-Fisheries Lab. 

 Kept, for 1895, p. 37, pi. ii. tigs. 1-11. 



One or two specimens of this Ameira occurred in the 

 same gathering with the last species. 



AMEIRA EXIGUA, T. Scott (var.). 



1894. Ameira exigun, T. Scott, 12th Rept. Fisheiy Board for Scot- 

 land, pt. iii. p. 243, pi. vi. tigs. 15-23. 



A form closely resembling Ameira exiyua, T. Scott, but 



