Manchester Memoirs, Vol. xli. (1897), No. 9. 3 



it will be seen that the endotesta is in each case 

 present, and I have not the least doubt that the 

 absence of the endotesta in Williamson's seeds is due to 

 the presence of so much carbonaceous matter. But 

 there are other more marked differences between my 

 recently discovered seeds and the one Williamson 

 describes, for if we turn again to Figs. 77 — 78, we shall 

 see that only one zone of tissue is shown, starting at the 

 base of the canopy measuring downwards, whereas in 

 three at least of my new seeds (Plate 8) three zones are 

 shown, viz., taking the endotesta as one, the testa proper 

 as the second, and the investure of the thick body of 

 hairs as a third. Another point of difference existing 

 between my new seeds and Williamson's Lagenostoma is 

 this, in all my seeds the testa is shown to be lobed 

 longitudinally, and it is quite clear that the sides and 

 -crown of each lobe form the seat from which the hairs 

 spring, but none spring from the spaces between the 

 lobes ; this feature is wholly absent in all Williamson's 

 figures of L. physoides as well as L. ovoides. I may, 

 however, remark that in my cabinet I have sections of 

 seeds which show the testa surrounded by a series of 

 very acute lobes, but no hairs spring from them. I do 

 not think they have yet been described ; at least Wil- 

 liamson has nothing figured that corresponds to them. 

 I think the points of difference between my new seeds and 

 Williamson's L. physoides will be clearly seen from the 

 matter and material I have laid before you, yet I do not 

 see that the difference is such as to warrant the removal 

 of either from the genus Lagenostoma. They have both 

 the peculiar bottle-shaped mouth, and this is the 

 •characteristic on which the genus rests at present. 

 In conclusion, I wish to mention a curious coincid- 

 ence in the finding of these new seeds: I found the 

 block from which I took five photographs, but two of my 



