Barnacles from the Hall of the ' Ttrra Nova' 229 



Five examples, 60 to 90 mm. long, three from Monteviileo, 

 and two, Iroin Baliia Blaiica, types oi the specie?, kindly 

 lont to me for exaniination by .Mr. C. Forster Cooper. 



Clupea niela no stoma. 



Pomotobus melanodomtis, Eigenmann, Proc. Washington Acad. viii. 

 1907, p. 452, pi. xxiii. tig. 6. 



Mouth toothle.^s. D'pth of body 3^ to 4 in the length, 

 length of head 4^ to 5. Diameter of eye 3 to 3^ in Jengtli 

 of liead ; maxilliuy expending to below anterior margin or 

 anterior ^ of eye; 25 gill-rakers on lower part of anterior 

 arch. Ko grooves at tree nnugin of scales; about 42 .scales 

 in a longitudinal and IL or 12 in a transverse seiies ; ventral 

 scutes stronj>ly keeled and acutely pointed, 17-20 + 9-10. 

 Dorsal 15-16 : origin nearer to base of caudal tlian to end 

 of snout. Anal 1/— 20. Pel vies 7-rayed, inserted iu advance 

 of origin of dorsal. Vertebrie 43. 



Rio de la Plata. 



Eleven specimens, G5 to 80 mm. in total length. 



XVIII. — Barnacles from tie Hull of the ' Terra 3"cfa ' : 

 a Svte. ^y L. A. Bokradaile. 



When the 'Terra IS'ova,' with the Bnti.-li Antarctic Ex|)('- 

 dition on board, was at Lytleltuu, New Zealand, in 1910, 

 barnacles weie removed from her bottom. !Some of these 

 were included in the collection of Cirripedes taken by the 

 Expedition, upon which I have recenily repoited (Brit. 

 Antarct. (' Terra Nova ') Exped. 1910, Zool. iii. p. 127, 1916). 

 Others came into the posse.'ssion ot the Ota go Museum, and 

 are mentioned by Mr. Jennings in an article on the Pedun- 

 culate Cirripedia of New Zealand, publi.^htd in 1915 in the 

 * Transactions of the ^.ew Zealand Institute ' (xlvii. p. 2(55). 

 IJnfoitunatel}', at the time of writing n)y report I had not 

 Mr. Jennings^s work before me, and tliere are consequently 

 between our pa[)ers ceitain discrepancies. Tiie object of 

 the present note is to Ciill attention to and explain these, as 

 fullows : — 



]. J\Iy Lepas affinis is Mr. Jennings's L. anatifeia^ var. c. 

 If I had seen Mr. Jennings's descri[)ti<n of this form, I 

 shouhl still have thought it advisable to name it as I did, 

 becau e in my view it is as nearly le'aled to L. htllt as 

 lo L. aiiutijtia. and all three terms aie of tiic .-ame rank. 



