690 RECORDS. 



geria, and an outline was given of the developmental histoiy of 

 the gemmae in Riccardia, MarcJiantia, Liinnlaria , Blasia, Sca- 

 pania, Radula and Cololcjciinea. These gemmae seem in most 

 cases to be modifications of trichomes, and they bear more or 

 less structural resemblance to the protonemata which result 

 from the germination of the spores. 



Francis E. Lloyd, 



Secretary. 



