(t. 39.), the necessity of adding several of the Astomce of MrGkay, the want of an orifice not being of itself sufficient tokeep them distinct, were that character even constant, whichit is not.

Fig. 1. Plants, nat. size. Fig. 2. Plants, and sections of ditto in situ. Fig. 3.A spherule divided and removed. Fig. 4*. Sporaliferous cells.