290 DR THOMAS SCOTT ON THE 



Heterorhabdus austrinus, Giesbrecht. 

 1902, Heterorhabdus austrinus, Giesb., Exped. Antarct. Beige, " Copepoden," p. 28, pi. vi. 



H. austrinus occurred in gatherings from 200 and 500 fathoms. Only one or 

 two specimens were obtained. These gatherings were collected on 2nd March 1903 ; 

 Station 280, 68 40' S., 30 18' W. 



Fam. HALOPTILID^E. 



Genus Haloptilus, Giesbrecht, 1898. 



Haloptilus acutifrons, Giesbrecht. 



1892, Hemicalnnm acutifrons, Giesb., F. Ft. Neapel, vol. xix. p. 384, pi. iii. fig. 11, pi. xxvii. fig. 12, 



pi. xlii. figs. 12 and 20. 

 1898, Haloptilus acutifrons, Giesb. & Schmeil, Das Tierreich, vol. vi. p. 117. 



A single specimen of this Haloptilus was obtained in each of two gatherings, in 

 one from 200 fathoms, the other from 500 fathoms, collected on 2nd March 1903 in 

 68 40' S., 30 18' W., Station 280. These specimens are more than twice the size 

 of those recorded by Dr GIESBRECHT, and on that account were considered at first 

 as belonging to a different species. A careful examination of them, however, did not 

 reveal any difference sufficiently important to separate them from H. acutifrons. 



Fam. CANDACIID^S. 

 Genus Candacia, Dana, 1846. 

 Candacia pachydactyla, Dana. 



1849, Candace pachydactyla, Dana, Proc. Amer. Acad. Sci., vol. ii. p. 23. 



1883, Brady, Report Voyage of the " Challenger," vol. viii. p. 68, pi. xxxi. 



figs. 2-9. 



1898, Candacia pachydactyla, Giesb. & Schmeil, op. cit., p. 128. 

 1904, ,, Cleve, Mar. Invest. South Africa, vol. iii. p. 187. 



This was a tolerably common form in the Scotia plankton collections, and appeared 

 to be widely distributed. It was observed in samples collected at twenty-eight 

 different stations, extending from Station 7 in 26 23' N., 20 20' W., to Station 

 95 in 32 15' S., 47 30' W. 



Candacia curta, Dana. 



1849, Candace curta, Dana, op. cit., vol. ii. p. 33. 



1892, Giesb., F. Fl. Neapel, vol. xix. p. 424, pis. xxi., xxii., and xxxix. 



1893, intermedia, T. Scott, Trans. Linn. Soc. Lond., "Zool.," ser. 3, vol. vi. p. 61, pi. iv. 

 figs. 30-37. 



1598, Candacia curta, Giesb. & Schmeil, Das Tierreich, vol. vi. p. 128. 



This Candacia was obtained sparingly in gatherings from the following five 

 stations, viz. 31, 32, 35, and 49 in the North Atlantic, 11 10' N., 25 20' W., to 

 1 53' N., 27 26' W., and Station 59 in 2 30' S., 32 42' W. This species is found in 

 the Red Sea, and its distribution extends both to the Atlantic and Pacific Oceans. 



(BOY. 8OC. BDIN. TRANS., VOL. XLVIII., 536.) 



