296 



The chair having been taken pro tern, by Dr. Matthews, the President 

 gave a description of species of a Gamasus found in a mole's nest, and 

 supposed to be unrecorded. He illustrated his remarks by drawings on 

 the board, and by slides exhibited under microscopes in the room. 



A vote of thanks to the President for his communication was proposed 

 by Dr. Matthews, and carried unanimously. 



A short note " On the Finer Structure of certain Diatoms," by Mr. E. 

 M. Nelson and Mr. G. C. Karop, was, in consequence of the lateness of the 

 hour, taken as read. 



The President again announced that owing to the occurrence of Good 

 Friday on the fourth Friday in April, the ordinary meeting in that month 

 would be omitted. 



The excursions, &c, for April and May were then announced, and the 

 meeting terminated with the usual Conversazione, and the following 

 objects were exhibited : — 



Stentor polymorphous Mr. F. W. Andrew. 



Diatoms, Arachnoidiscus oratus Mr. C. Collins. 



Tick Argas persicus Mr. F. Enock. 



Lung of spider Mr. F. Fitch. 



Dipterous fly, Hemerdromia raptoria $ Mr. H. E. Freeman. 

 Spider, Linyphia montana $ & Q ... Mr. G. E. Mainland. 



Acarus, Gamasus terribilis Mr. A. D. Michael. 



Diatoms, Arachnoidiscus Ehrenberqii. var.l ,, TT , r , 

 Montereyana j Mr - H ' Molland - 



Diatoms, Eupodiscus argus Mr. E. T. G. Nevins. 



Attendance — Members, 66 ; Visitors, 4. 



