NeAv and Rare Fossils. 53 



Rostral latus. extreniL' apex wantiiifj:. Length, 8 nun. ; width at 

 base, 2.25 mm. ; thickness of carina at apical end. 1 nun. 



Scutum. Length, minus apex, 7.75 nun.; greatest width, 9 una. 



AffinitieK. — The above species shows a remarkable resemblance to 

 Scolpellmn quadratum, Dixon sp.,l a form which occurs in the 

 Londinian (Eocene, London clay) of Bognor, in Sussex and Hanip- 

 stead, near London, England. As in .S'. subqitadrafum, the lines 

 of growth start from the apex as noted by Darwin for that species. 

 From the living Scalpellitm rntilutn, Darwin, 2 this carina differs 

 in the flat, ungrooved roof, and strongly arched growth-lines. 



A species of Scalpellam (S. jidieuse, Ortmann^), has been de- 

 scribed from tlie Miocene of Patagonia, in which the outer surface 

 of the carina is convexly rounded, and not flattened as in our 

 species. 



Observations. — The largest specimen (holotype) is incomplete, 

 but probably wanting only 5 or 6 mm. The specimen was originally 

 found in two parts, washed from a large quantity of clay, and 

 it was only when examining the material in detail that the two 

 parts were found to fit together. 



Occurrence. — Bore 4, 163-170 feet, holotype and parat^-pe 

 (Carina and Scutum), — (Kalimnan or Janjukian). Bore 10, '310- 

 320 feet, paratype (rostral latus). (Kalimnan or Janjukian). 



Fam. BALANIDAE. 



(ienus BALANUS. Lister. 



Balanus psittacus, Molina sp. (Plate X., Figs. 52a, 6). 



Lepas psitfaciis, Molina, 1788, Hist. Xat., Chile, vol. i., 



p. 223. 

 Balanus psitfaciis, Molina sp. Darwin, 1854, Mon. Cirri- 



pedia (Ray Soc). vol. ii.. p. 206. pi. ii., figs, 'ia-d . 

 Balanus cf. psiffacus, Molina sp.. Ortmann. 1902, Rep. 

 Princeton Univ. Exped., vol. iv., pt. ii.. p. 249. pi. 

 xxxviii.. fig. 2. 

 Observations. — The identification of the Mallee specimens of the 

 above, consisting as they do of only separated compartments, would 

 have been practically impossible but for the other and more com- 

 plete examples from the Kalimnan of Beaumaris in the 



1. Xiphidimn qitadratum, Dixon, in Sowerby's Mineral Coiioh, vol. vii., 184C., pi. dexlviii. 

 DLxon, Geol. of Sussex, 1850, pi. xiv., figs. 3, i. Scalpellitm t/nadratum, Dixon sp. Darwin, Mon. 

 Fo«8. Lepadidae (Men. Pal. Soc), 1851, p. 22, pi. i. fig:. 3. 



2. Mon. Cirripedia (Ray. Soc), 1851, p. 253, pi. vi., flj^. 2. 



3. Rep. Princeton Univ. Exped., Patagonia, 1896-9, vol. iv., pt. ii., 1902, p. 247, pi. xxxvii. 

 ilgs. 9a-c. 



