127 



CRUSTACEA. 



PART III.-CIRRIPEDIA. 



BY L. A. BORRADAILE, M.A. 



{Fellow, Bean and Lecturer of Sehmjn College, Cambridge ; Lecturer in Zoology in the University). 

 WITH SEVEN FIGURES IN THE TEXT. 



The " Terra Nova" brought back specimens of fourteen species of barnacles.* Five of 

 them appear to be new, though, as is explained below, there is room for doubt in the 

 ease of four of these, on account of our lack of knowledge of the range of variation and 

 of the life-history of forms to which they are related. Seven species were taken at or 

 near New Zealand, four in the Antarctic, two at South Trinidad Island, and one from 

 the bottom of the " Terra Nova " herself, the locality in which the ship acquired it 

 being, of course, impossible to determine. None of the species was taken in more 

 than one of these places, and there is nothing of interest in the occurrence of any of 

 them where the Expedition found it, except in the remarkable case of liexelasma 

 antarctic'um, and perhaps also in the appearance of Conchoderma aurituni in New 

 Zealand waters. 



The following is a list of the species found, arranged according to localities : 



Antarctic : 



Scalpellum {Arcoscalpellum) cliscoveryi, Gruvel, 1907. 

 Scalpellum [Arcoscalpellum) nymphonis, n. sp. (?). 

 Scalpellum {Arcoscaljyellum) compactum, u. sp. (?). 

 liexelasma antarcticum., n. sp. 



'■ By an unfortunate oversight the Report on the Cirripedia collected by the "Discovery" Expedition 

 (Nat. Antarct. Exp. 1901-1904, Nat. Hist., Vol. Ill, 1907) contains no record of the localities where the 

 specimens were obtained. They were as follows : — 



Balanus psittacus (Molina). Port Ross, Auckland Islands. 



Elminius rugosus, Hutton. Enderby Island, Auckland Islands. 



Scalpellum discoveryi, Gruvel. " Discovery's " Winter Quarters, -5 fathoms. 



Scalpellum hoiwieri, Gruvel. "Discovery's" Winter Quarters, 10-20 fathoms. — S. F. H. (Ed.), 



VOL. Ill, T 



