370 Alhany Musruin Records. 



and SjJ. <)rhi(/ii//i\ and one may also perhaps compare Ehe Ohinese 

 form *Sy>. cJieehiel, de Koninck^, from Yunan, with them The other 

 fossil species associated with the Australian Spirifers do not bear 

 out the resemblances, but it is very desirable that a careful com- 

 l)arison of tlie South African species \<'ith the Australian ones 

 should be made, as sevei-al Australian tVicnds ha\e r(Mnarlc<Ml (tn 

 the similarity. 



Spirifer orhic/ni/i, Morris and Sharpe. 

 PI. VII., Figs. 3, t, 5. 

 l(S4:r». Spii'ifcf orliii/njii , Morris ami Shari)e. Q. J. (j. S., II, 

 p! 276, pi. XL, hg. .'}. 



I find in the Albany Museum collection a form which is 



i'lentical with the Sp. orhigtnji of Morris and Sharpe, which 



Charles Darwin brought back from the Falkland Islands. It is 



gibbose, with the beak in the pedicle valve projecting away from 



the shell in the cast, as op[)osed to the other foi-m, which is fusi- 



foi'm, wdth the cast of the beak in the same plane as the shell. 



Moi'ris and Sharpe define the species as having a narrow hinge 



area, but the cast of ihis species which they figure (3a pi. xi) belongs 



to a shell with a very dee[) hinge area. Owing to the nature of the 



material there will always be great confusion between >S'/v. or/!;/f//</// 



and Sp. antarcti<-nx. The best specimens in the Albany Museum 



occur on a slab with Le^itococJ ia fiahelUtcs -dWiX Chonetes co/'onatus. 



In the cast of the pedicle valve there are eight ribs on either side 



of the sinus ; they are very little more prominent than the furrows 



between, and are obliterated towards the hinge. The sinus is deep 



aiul confined, with a somewhat flattened base ; it is wide at tiie 



margin, l)ut converges i'ai)idly towards the beak, and in the cast 



of the beak it runs upwards between the diductor scars with 



parallel sitles. The cast of the l^eak rises distinctly awaj^ from the 



plane of the surface of the shell as in Spirifcr duodenafius. Hall, 



and Sp. Sp., of Ulrich. The impression of the hinge area shows a 



few broad lines and not the close horizontal striations of Sp. aiit- 



arcticus ; it gives one the impi-ession of being curved like in the 



Sp. capcnxix oi' Von l^iicli, i)n( sulticient is not preserved to settle 



-Q J.G.S , Vol. IX., pi. XV., tig. 17. 



