Copepoda from the Falkland Islands. 7 



fifth pair of feet in the male and in the armature of the fifth 

 pair in tlie female tliis species difters from any other known 

 to me. 



The first joint of the outer ramus of the fifth pair is repre- 

 sented in the figure as seen under tlie cover-glass, and is 

 somewhat flattened, but before being subjected to the pressure 

 of tlie cover-glass it was seen to have a distinctly swollen 

 and bladder-like appearance. 



Genus Parabroteas, Mrazek, 1901. 



The genus Parabroteas may be distinguished by the 

 peculiar character of the posterior maxillipeds, which 

 resemble those in Limnoccdamis , and particularly by the 

 structure of the fifth pair of legs in the male. 



Parabroteas sarsi (Daday). (PI. II. figs. 1-4.) 



1901. Limnocalanus sarsi, Daday, "Diagnoses praecursorise Copepo- 

 dorum novoruin e Patagonia, " iu Termesz. Fiizeteli. 24. 



1901. Parabroteas michaelseiii, Mrazek, (5) p. 12, figs. 8, 9, 15, 16, et 

 seq. 



1905. Gigantella sarsi, Ekniau, (2) p. 22, figs. 15-21. 



1909. Parabroteas sarsi, G. O. Sars, (13) p. 29, pi. iv. 



A single specimen (a female), which appears to belong to 

 this species, occurred in a gathering from some lower pools 

 on ]\lount Adam. The specimen measured about 3"8 mm., 

 and is tlierefore much smaller than some others tbat have 

 been recorded. G. O. Sars states that specimens of Para- 

 broteas sarsi have been fonnd reaching even to 7 mm. in 

 length. It also difl'ers in the abdomen being shorter than iu 

 some of the figures of this species which I have seen, but this 

 may be accidental by the joints having become telescoped. 

 It is evident, however, when the structure of the more 

 characteristic appendages is compared with that of the 

 similar appendages described and figured by Mrazek and 

 G. O. Sars, that, notwithstanding the differences alluded to, 

 the Mount Adam specimen belongs to the species to which 

 it is ascribed. Parabroteas sarsi has already been recorded 

 from the Falkland Islands by Dr. Ekman*, and his descrip- 

 tion and figures of the posterior maxillipeds and of the 

 female fifth pair of thoracic legs agree with the specimen 

 recorded here. The terminal setse of the posterior maxilli- 

 peds are strong and spiniform (fig. 2). In the female the 

 second joint of the outer ramus of the fifth pair of legs has 



* See his paper on the Copepoda of ilie Swedish South-Polar Expe- 

 dition, already referred to. 



