PEOCEEDINGS OF THE SOCIETY. 167 



Mr. A, D. Michael gave a resume of his paper " On the Special 

 Internal Anatomy of Uropoda Krameri" the subject being illustrated 

 by drawings on the board, as well as by coloured diagrams and prepara- 

 tions exhibited under Microscopes in the room (supra, p. 1). 



Prof. Bell said he had listened with great pleasure to the most 

 interesting jJaper of Mr. Michael, and in so doing he noted that attention 

 was called to a very curious anomaly in the nomenclature of anatomists 

 with regard to the terminal portion of the intestinal canal. It was the 

 usual practice to call this terminal tube the rectum, although it might, 

 as in the case mentioned by Mr. Michael, receive the Malpighian tubes 

 giving off renal products. But it was also a fact that those very 

 anatomists who were in the habit of teaching students of these subjects 

 in various places, did adopt the nomenclature advocated by Mr. Michael 

 when they came to deal with certain of the Vertebrata. By drawings 

 upon the blackboard it was then pointed out that in the bird, by 

 universal agreement, one portion was called the rectum and the other 

 the cloaca. He regarded the question of name as being in this case of 

 small importance, the really important consideration being that in both 

 cases they had the primitive intestine form. Whether, however, it was 

 called the rectum or the cloaca, he thought it would be well to get the 

 terms into agreement. He noticed that in the diagram there was no 

 body-cavity shown, and inquired if it had been found to exist? 



Mr. Michael said that he had not found that there was any special 

 lining of the body-cavity. 



Prof. Bell said that was of course very interesting in relation to what 

 was found elsewhere, because there was in the crayfish what was known 

 as coelom, which was analogous to the body-cavity. If they were to 

 define it in usual terms then they would say there was none either in 

 the crayfish or in the lobster, although what was found seemed to him 

 to be much the same thing only reduced to a minimum. 



Mr. Bowman's paper " On the Frustule of Surirella gemma " was 

 read. 



Count F. Castracane's paper " On the Keproduction and Multiplica- 

 tion of Diatoms " (supra, p. 22) was read. 



Mr. Crisp explained the changes intended to be introduced, in the 

 current year, in the botanical section of the Journal by Mr. Bennett, in 

 order to bring it into harmony with the most recent views of the classifi- 

 cation and terminology of Cryptogams, as embodied in Bennett and 

 Murray's ' Handbook of Cryptogamic Botany.' The Lichenes will be 

 discontinued as a separate group, and included under the head of Fungi ; 

 while, on the other hand, the Mycetozoa will be separated from the 

 Fungi, and form an independent group of the first rank. The Protophyta 

 will be divided into two sub-groups : (a) Schizophycese, and (^S) Schizo- 

 mycetes. Under the former will be included the Diatomacese, hitherto 

 ranked as Alg£e ; the latter will comprise the Bacteria only, the Saccharo- 

 mycetes being regarded as a degraded group of Ascomycetes. In 

 terminology, the most extensive change will be the anglicizing of the 

 termination of a large number of terms, such as sporange, antherid, 

 archegone, plasmode, coenobe, epiderm, &c. For macrosporangium , 



