CRUSTACEA. 
PART III.—C1RRIPEDIA. 
BY L. A. BORRADAILE, M.A. 
( Fellow, Dean and Lecturer of Selwyn 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. 1 * Five of 
them appear to be new, though, as is explained below, there is room for doubt in the 
case of four of these, on account of our lack of knowledge of the ran o-e 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 Hexelasma 
antarcticuin, and perhaps also in the appearance of Conclioderma ciuritum in New 
Zealand waters. 
The following is a list of the species found, arranged according to localities : 
Antarctic : 
Scalpellurn ( Arcoscalpellum) discoveryi, Gravel, 1907. 
Scalpellurn ( Arcoscalpellum) nymphonis, n. sp. (?). 
Scalpellurn (. Arcoscalpellum ) compaction, n. sp. (?). 
Hi welasma antarcticuin , 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. 
Scalpellurn discoveryi, Gravel. “Discovery’s” Winter Quarters, 5 fathoms. 
Scalpellurn bouvieri, Gravel. “Discovery’s” Winter Quarters, 10—20 fathoms. —S. E. H. (Ed.). 
