164 PROCEEDINGS OP THE SOCIETY. 



Mr. H. E. Freeman : 



Acarina from a hay-rick. 

 Mr. J. W. Groves : 



Hydra fusca and Amoeba of large size. 

 Mr. A. de Souza Guimaraens : 



Hypherstliene, St. Paul's Island ; Porphyritio Melaphyre, Plauen, 



near Dresden. Stained blue ? 

 Mica Diorite, Freiburg ; Mica Diorite, Wolsau, Fichtelgeb. ; 

 Quartz Diabase, Gotha ; Quartz Diorite, Bingen. The same 

 rock ? 

 Mr. H. Hailes : 



Abnormal forms of Foraminifera (Peneroplis). 

 Mr. J. D. Hardy : 



Cbromatoscope and transverse section of eyelash of Whale. 

 Mr. J. E. Ingpen : 



Cyclosis in Australian Vallisneria. 

 Mr. W. Joshua : 



Sea skimmings from the east coast of New Guinea, containing the 

 following species : — Bhizosolenia styliformis, striata, alata, seti- 

 gera, calcaris, Shruhsolii; Chcetoceras peruvianus and WigJiamii ; 

 Coscinodiscus nohilis, concinnus, radiatus ; Lauderia annulata ; 

 Moelleria caudata ; Eucampia zodiacus; Palmer ia Hardmaniana ; 

 Melosira grandis, &c. 

 Dr. Matthews : 



Sponge from the base of Stylaster. 

 Mr. J. Mayall, jun. : 



Dr. Schroder's Camera Lucida. 



„ 1/4 in. Eye-piece. 



5, 1 in. do. 



McLaren's new Fine Adjustment. 

 Mr. A. D. Michael : 



Hoplophora magna. The muscles for raising the cephalothorax, 

 showing the tendonous attachments ; and a trachea of Damoeus 

 geniculatus, showing the spiral structure not before detected. 

 Mr. E. M. Nelson : 



Human Spermatozoon, showing a division in the tail not before 

 observed, with Powell and Lealand's oil-immersion 1/12. 

 Mr. F. A. Parsons : 



Gerataphis latanice, the Horned Aphis. 

 Messrs. Powell and Lealand : 



Scale of Podura with 1/25 oil-immersion, N.A. 1 '38. 

 Mr. B. W. Priest : 



Section of Placospongia melobesioides, and Plumularia setacea, with 

 tentacles expanded. 

 Mr. S. O. Eidley : 



' Challenger ' Deep-sea Sponges. 

 Messrs. Swift and Son : 



Small Petrological Microscope. 

 Mr. G. Smith : 



Fossil Wood silicified in section ; Dolerite, &c. 



