356 Prof. H. Karsten on the Peculiarities 



obviously a distinct species, from the difference of its ])ropor- 

 tions. The length of the centrum of the trunk is 2;^ inches, 

 width 8f inches, depth 2^ inches. I name it Plesiosaurus 

 Sutherlandi (M'Coy), in honour of the tinder. 



The second but not so abundant species is known by cci-vical 

 vertebrae only, and appears specifically distinct from the former 

 by the extraordinary rugosity of the edges of the articular ends 

 of the centrum, each of which presents a remarkably elongate 

 form, from which, if the species prove distinct, I would name it 

 Plesiosaurus macrospondi/lus (M^Coy). Each centrum is 3 inches 

 long_, 3 inches wide, and 2h inches deep. 



With these are remains of two Cephalopods (tending to prove 

 the correctness of my previous reference of the deposit contain- 

 ing these fossils to the Lower Cretaceous period), namely: — A 

 gigantic species of Ancyloceras, exceeding the Ancyloceras gigas 

 of the Isle of Wight in size, and differing by having the trans- 

 verse ribs larger, forking on the sides, and a row of large com- 

 pressed tubercles on each side of the back ; it most resembles 

 the A. Zabarelli of the French Lower Greensand. I name it 

 Anct/loceras Fiindersi (M^Coy). 



The second important mollusk is a Belemnite with the two 

 dorsal sulci and general size and broadly hastate shape of the 

 BelemniteUa plena of the English, French, and German Lower 

 Chalk so closely reproduced as almost to warrant the reference 

 of it to a variety of the same species. Like most specimens of 

 B. j)lena, it is broken off at the bottom of the phragmacone. 

 As it is rather larger, the dorsal furrows a little further apart, 

 and I see no trace of the ventral furrow, I name it separately 

 B. diptycha (M^Coy). 



I remain, Gentlemen, 

 Yours, &c., 



Melbourne, Feb. 26, 1867. Frederick M'Coy. 



LL — On the Peculiarities of some Btylosj)ores o/Sphjerise. 

 By H. Karsten^. 

 [Plate X. figs. 5-13.] 

 In the opened anthers of Fuchsia splendens I found, besides the 

 more or less irregularly developed pollen which was interwoven 

 with a delicate colourless mycelium, some small, globular, grey 

 Sphcerice, finely villous externally and furnished at the vertex 

 with a circular orifice, which was not drawn out, and was sur- 



* From Karsten's 'Botanisohe Untersuchiingen,' 1866, pp. 336-340; 

 with an additional paragraph by the author. Translated by W. S. Dallas, 

 r.L.S. &c. 



