QUEKETT MICROSCOPICAL CLUB. 247 



striato-punctata (F. and M.) occur abundantly everywhere, and 

 form the bulk of all the cleaned material. 



The President, in proposing a vote of thanks for the paper, 

 said he much admired the photographs shown, which were the 

 best of the kind he had seen. He would like to ask Mr. Ear- 

 land, with regard to the criteria of specific characters, How 

 could one tell one species from another, seeing that there is so 

 much variation within the same species ? 



The vote of thanks was carried unanimously. 



In replying, Mr. Earland said he had to thank Mr. A. E. 

 Smith for making the negatives, and Mr. Lovegrove for the 

 lantern slides. Regarding specific differences, probably Prof. 

 Dendy would have no difficulty in identifying sponges which he 

 (Mr. Earland) would not be able to tell one from another. 

 There are constant points always present which make it more 

 or less easy to diagnose within certain limits. As regards specific 

 features in Foraminifera, there are none such as we find between, 

 say, a cat and a dog. Probably generic differences in Fora- 

 minifera are about equal to specific differences in higher forms. 



Mr. D. Bryce gave a resume of a paper he had contributed 

 on " Five New Species of Bdelloid Rotifers." Four of the new 

 species belong to that important section of the Philodiniclae in 

 which the food is formed into pellets after passing through the 

 mastax, and are assigned to the genus Habrotrocha. The new 

 species are IT. munda, H. torquata, U. spicida, and H. ligula. 

 The fifth species, Callidina Bilfingeri, belongs to the more 

 numerous section of the same family in which the food is not 

 at any time agglutinated into pellets, and being oviparous, and 

 possessed of three toes, is a member of the genus Callidina, as 

 now restricted. 



The President said they were all much indebted to Mr. Bryce 

 for bringing these interesting details before them. 



A vote of thanks to Mr. Brvce for his communication was 

 carried unanimously. 



At the meeting of the Club held on April 22nd, 1913, the 

 Vice-President, E. J. Spitta, L.R.C.P., M.R.C.S., in the chair, 

 the minutes of the meeting held on March 25th were read and 

 confirmed. 



