172 FrederirJ,- Cluiptuan : 



The specimens frcim tlie polyzoal rock of the Mallee borings are 

 invariably arrested in growth, showing only the first tier of seg- 

 ments above the primordial group. 



Dixf rihi/f /'on. — Bin-e 11. :Ai^-')i'2 fft-r ; r)44-r)46 feet; 560-562 feet. 



Genns PULVIXULINA, Parker and Jones. 

 PuLViNULiNA scAiJKicuLA, Chapman. 



Pnlviii/ulina saahricAddv, Chapman, 1910, Proe. Roy. Sue. 



Vict., vol. xxii. (N.S.), pt. ii., p. 288, pi. ii., figs. 2a, b. 



Observations. — This distinct littlf species was hitherto known 



only from the Batesfoi'd limestone. It is here moderately connnon. 



and restricted to the polyzoal rock of the Mallee bores. 



J);.sfr/'hiifio//.—Bi,ve 11, 540-542 feet; 554-556 feet. 



PULVINLMNA CALABKA, Costa Sp. (Plate XVT., FigS. 8rt, 6). 



RosdliiKi (-(dahva. Costa. 1856, Pal. del Regno di Xapoli, 



pt. ii., pi. xiv., figs. 6r/-r. 

 li. thlara. Stache, 1864. Novara Exped., Geol. Tlieil. vol. 

 i.. p. 279, pi. xxiv., figs. 29a-r, SOfl-c. 

 Ohserrafioiis. — This remarkable and distinct species was figiiifd 

 by 0. G. Costa from the Italian Tertiaries, but not described. 

 There is no doubt about its identity with our Mallee bore speciinen. 



The RosaUna thiara of Staclie is synonymous with Costa's species. 

 It was described from the Tertiary marl of Whaingaroa Harbour. 

 N.Z., which yields a microzoal fauna closely resembling that of the 

 deeper parts of the Mallee bores. 



The test of our specimen is slightly rough, and is in the form 

 of a depressed nautiloid spiral. Hatter on the superior face, which 

 shows a many-chaniliered, short, seg!iiented whorl with constiicted 

 sutui'es, closely and dcTisely coiled on the central axis. Underside 

 somewhat concave, .showing tlie outer whorl. Septal face where 

 fractured shows the shell-wall to be thick. 



Dimensions. — Diametei- of test. -'{.S-l nmi. ; thickness, 1.25 mm. 

 Distrihufion. — Bore 5. 16:MT5 feet. 



Genus (iYPSINA, Carter. 

 (ivHSiNA nowcillNl, Cliapuian. 



Umii^ina honrhiiti. Cliapman. 1910, Proc. R. Soc Vict., 

 vol. xxii. (N.S.), pt. ii.. p. 291, pi. ii., figs, ia, h., pi. 

 iii., fitjs. 3-5. 



