Natural History of East Finmark. 27 



the first pair is in some respects not unlike tliat of Th. rohusta, 

 Claus, from Nice and Messina f, but the fifth pair in form 

 and armature is decidedly different. It may be further 

 remarked that the structure of the first pair of feet in both of 

 the species named exhibits a close resemblance to that of the 

 fiirst pair in certain species of I)acti/hpus, so that the species 

 may be almost considered a connecting-link between the two 

 genera Thalestris and Dactylopus. 



Genus PsEUDOTHALESTRis, G. S. Brady, 1883. 



Pseudothalestru major (T. & A. Scott). 



1895. Psetidoivestwoodi'a major, T. ifc A. Scott, Ann. & Mag. Nat. Hist. 

 (6) vol. XV. p. 66, pi. vi. 'tigs. 17-30. 



This small species was moderately frequent in a gathering 

 collected between tide-marks at Vadso ; but it was not 

 observed in any of the other Finmark gatherings. 



Four British species of Pseudoihalestris have been de- 

 scribed — the first in 1894 in the Twelfth Ann. Report of the 

 Fishery Board for Scotland, pt. iii. p. 257, pi. xi. figs. 21-29, 

 under the name of Fseudoioesticoodia Andrewi\ T. Scott : 

 descriptions of other two species by T. & A. Scott were 

 published in the Ann. & Mag. Nat. Hist, for January 1895 

 under the names of Paeudowesticoodia pygmcea and major ; 

 in the 'Annals' for the following month of June (p. 463) 

 these authors withdrew the name Pseudowestivoodia, T. Scott, 

 in favour of Pseudoihalestris, G. S. Brady, as it was found 

 that the two genera were identical and tliat the latter name 

 had been published several years before tlie otlier. The 

 description of the fourth species by Prof. G. S. Brady was 

 published early in 1901 in Nat. Hist. Trans. N. D. & N. C. 

 vol. xiv. p. 59, pi. iii. figs. 11-16, under the name of Pseudo- 

 ihalestris monensisj from specimens obtained at Port ICrin, 

 Isle of Man. Pseudoihalestris major has not previously been 

 recorded from the Arctic seas. 



Genus Westwoodia, Dana. 



* Westwoodia nohilis (Baird). 



1845. Arpacticus nobilis, Baird, Trans. Berw. Nat. Club, vol. ii. p. 155, 



This pretty little species resembles very closely the British 

 species of Pseudoihalestris, but differs distinctly in the 

 structure of the first pair of thoracic feet. It was of rare 



t Diefrei lebendeu Copepoden, p. 129, t. xviii. figs. 17-23, t. xix. fig. 1, 



