WESTWOODIA. HARPACTICUS. 177 



though they preferred for the present to leave them in the 

 genus Dactylopusia to which they were ascribed. 



WESTWOODIA NOBILIS (Baird). 



1845. Arpacticus nobilis, Baird, Trans. Berw. Nat. Club, vol. ii. 



p. 1.",. 



1850. Arpacticus nobilis, Baird, p. 214, pi. xxviii. figs. 2, 2 a-c. 

 1880. Westwoodia nobilis, Brady, vol. ii. p. 141, pi. Ixiii. tigs. 1-13. 



This species has also been recorded by Dr. Brady from near 

 St. Agnes, Scilly Islands. The following are some o the 

 localities where Westwoodia nobilis was obtained by A. M. 

 N. : Salcombe in 1875 ; between tide-marks at Exmouth 

 in 1884 ; at Beggars Island, Plymouth, in 1889 ; Plymouth 

 Sound in August, and at Fowey, Cornwall, in May, l'J03. 



PSEUDOTHALESTRIS ANDREW! (T. Scott). 



18!)4. Pieitclowestwoodia Andrewi, T. Scott, 12th Kept. Fishery 

 Board for Scotland, pt. iii. p. 257, pi. ix. tigs. 21-29. 



This small but quite distinct species occurred sparingly 

 near Chequer Buoy and other places in Plymouth Sound. 



PSEUDOTHALESTRIS PYGM^A (T. & A. Scott). 



1895. Pseudoivestwoodia pyymaa, T. & A. Scott, Ann. & Mag. Nat. 

 Hist. ser. 0, vol. xv. p. 55, pi. vi. figs. 8-10. 



Salcombe, July 7th, 1875 ; Starcross, June 23rd, 1884. 

 Also at Fowey, Cornwall, among corallines and small weeds ; 

 and New Grimshy and St. Mary's Harbours, Scilly Islands, 

 May 1903. 



HARPACTICUS CHELIFER (0. F. Miiller). (PI. XII. fig. 11 ; 

 PI. XVII. fig. 9.) 



1776. Cyclops chelifer, 0. F. Miiller, Zool. Dan. Prodr. 2413. 

 1850. Arpacticus chelifer, Baiid, p. 212, pi. xxix. figs. 2, 3, 3a-g. 

 1880. Harpacticus chelifer, Brady, vol. ii. p. 140, pi. Ixiv. tig-s. 19, 20; 



Ixv. tigs. 1-15 (but not tigs. 8, 10, and 13). 

 1904. Harpacticus chelifer, G. O. Sars, p. 49, pis. xxvii., xxviii. 



This species occurred very sparingly, and especially the 

 form which is described and figured by Claus in his work 

 ' Die freilebenden Copepoden.' This form ditfers from others 

 sometimes ascribed to H. chelifer in having the anteunules 

 (anterior antennae) composed of eight joints : four moderately 

 stout and elongated, and four small ones (PI. XII. fig. 11). 

 It also differs in the structure of the fifth thoracic feet of the 

 female. In this form the fifth feet of the female have the 



