221 



the paper, the speaker drew a diagram on the blackboard of a 

 Textularia, and said that if we imagine such a form folded down 

 the median Hne, and then rolled up, we should get something 

 resembling a Cassidulina. The author first described the genus, 

 quoting Carpenter, who states that the genus was established by 

 d'Orbigny in 1826. The first of the new species is Cassidulina 

 elegans, the second Cassidulina decorata. Both forms were found 

 at one station, H.M.S. Waterwitch, S.W. Pacific, station 159, 

 lat. 19 04' S., long. 179 43' E., 1,050 fathoms. Mr. Earland 

 exhibited several preparations of this genus, including the 

 extremely rare form, Cassididina calahra, Seguenza, and the most 

 extreme type of the helicoid spiral in this genus, G. clavata, Brady. 



The President, in moving a vote of thanks to Mr. H. Sidebottom 

 for his communication, said the Club was very fortunate in having 

 a paper of this character brought before them, and in having^ 

 it explained by Mr. A. Earland. 



A vote of thanks was given to both Mr. Sidebottom and 

 Mr. Earland. 



A paper entitled " A Contribution to the List of Hydrachnidae 

 found in the East African Lakes " was read by Mr. Charles D. 

 Soar, F.R.M.S. The author said that the material on which 

 the paper was based was placed in his hands for examination by 

 Mr. C. F. Rousselet in the early part of 1910. It consisted 

 of three tubes containing Hydrachnids collected during the third 

 Tanganyika expedition, conducted by Dr. \V. A. Cunnington, 

 F.Z.S., 1904-5, Each tube represents the collection made from 

 one of the three great lakes, Victoria Nyanza, Tanganyika, and 

 Nyassa. Of the specimens obtained from Lake Victoria ISTyanza, 

 it was possible to identify only one species, Unionicida Jiguralisy 

 Koch. From Lake Tanganyika, six pieces were obtained, of which 

 three are new. These are Neumania papillosa, Mideopsis miniUa^ 

 and Hygrohates edentipalpis. 



The President thought all would agree with him that the Club 

 had begun the session extremely well on having three such im- 

 portant and interesting papers brought before them. A vote of 

 thanks was accorded Mr. C. D. Soar for his communication. 



Mr. A. C. Banfield exhibited living specimens of Cristatelko 

 mucedo, abnormally hatched from statoblasts. The usual time 

 of appearance is about the end of February or beginning of 

 March. 



