ZOOLOGICAL AND BOTANICAL ASSOCIATION. 283 



ritella suturalis ; and I am of opinion that the few carboniferous species 

 of Turritella which are still left in that genus should be removed into 

 another, as they are wanting in some of the characteristics of the true 

 Turritellidae." 



The provisional genus Cerithioides might bo made to receive them, 

 as they are certainly not either Loxonema or Macrocheilus. The qua- 

 drangular shape of their mouth is a character of no value in a Palaeozoic 

 fossil, liable to the distortion produced by pressure. I have seen the 

 undoubted Turritella suturalis of the Carboniferous Limestone of Cork, 

 with the Melania- shaped mouth of Loxonema, produced by pressure, 

 which had at the same time, squeezed the cross-section of the shell into 

 an ellipse. 



DESCRIPTION OF THE PLATES. 



Plate XX 



Fig. 1. Cerithium telescopium (recent), for comparison with the fossil 

 shells. 



Figs. 2,'3, 4 (new) Cerithioides telescopium (Haughton). Figs. 2 and 3 

 show the faint subcentral band ; and Fig. 4 shows the con- 

 centric basal grooves. 



Plate XXI. 



Figs. 1 and 1. Loxonema sulculosa (Phillips). 

 Figs. 2 and 2. Loxonema rugifera {Phillips). (New to Ireland.) 

 Figs. 3 and 3. Macrocheilus acutus (var.) (Phillips). 

 Fig. 4. A new patelliform fossil, allied to Acmcea, found in the Wind- 

 mill Quarry, near Cork. 



The Hon. Secretaries announced that the second and last Excursion 

 for this Session had been fixed for the 16th of July. 



The ballot having been opened, Henry Joy, LL. D., Q.C., was declared 

 elected as Ordinary Member. 



