UUXEAN SOCIETY OP LOKDOJf. 



7 



Mr. S. Pace exhibited and made remarks on some Pearl Oysters 

 and other specimens illustrating the formation and development of 

 pearls. 



Mr. C. T. Druery, F.L.S., exhibited an intermediate form between 

 Ceterach officinanan and ScoJopendrium vulgare, which he had 

 received from the late Mr. E. J. Lowe, F.L.S. 



The fronds were of somewhat foliose Ceterach form, but entirely 

 devoid of scales, and with the upper third confluent, resembling: the 

 tip of a Scolopendrium-fiond, the fructification partly Seolopendrioid 



Fig. 2. 



Fig. 1. Frond of Asplenium marimim (?), nat. size. 

 Fig. 2. Portion of same, magnified, showing sori. 



