52 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [JuDG l7j 



2nd Section, allied to C. incisus, 



H. nervicanus, Be RycJch. H. viseticola, De RycJch. 



H. turnacianns, De RycJch. H. priscus, Munster. 



H. mempiscus, De RycJch. 



Srd Section, resembling Chitonellus. 



H. gemmatus, De Kon. ? Sluseanus, De Kon. 



H. legiacus, De RycJch. ? mosensis, De Kon. 



H. eburonicus, De RycJch. ? concentricus, Z>e Kon. 



Perhaps palseozoic forms of Chiton proper. 

 ,C. tornacicola, Z)e iZycM. C. scaldianus, De ^ycM. 



Chiton proper. 



C. grignonensis, Lam. C. tenuisculptus, -S", Wood. 



C. subapenninus, Cantraine. C. arcuarius, S. Wood. 



C. fascicularis, Sow. C. angulosus, S. Wood. 

 C. strigillatus, 5. Wood. 



I have one remark to offer concerning the formation in which this 

 interesting fossil occurs. Mr. Griffiths found it a year or two back 

 in the slaty mudstone overlying the fossiliferous conglomerates of 

 Cong, CO. Galway. It is associated with remarkable fossils, and in 

 company too witha new Pleurorhynchus(i^.joW.5^25, Salt.), a genus yet 

 undescribed from the Silurian rocks, unless Hisinger's Cardium pyg- 

 mceum from the marine rejectamenta of Gothland be considered a 

 Silurian fossil. I have of course nothing to do here with the remark- 

 able conglomerates overlaid by this slate ; I may however state (as 

 Mr. Griffiths has already published the fact), that it contains fossils 

 hitherto considered as characteristic of both Upper and Lower Silurian 

 rocks associated in one bed of sandstone. Future researches will 

 show whether the present is an instance of the continuance of Lower 

 Silurian species to a later period, owing to favourable conditions, or 

 a proof of the English tilestone fossils having been introduced from 

 Ireland, where they had been developed at an earlier period. My 

 own opinion is in favour of the former hypothesis. 



2. Notice of the occurrence of the Elephas primigenius at Gozo 

 near Malta. By James Smith, Esq., of Jordan-hill, F.G.S. 



The fragment which accompanied the specimen was given to Mr* 

 Smith by Mr. St. John of Valetta, who stated that he ibund it, en- 

 crusted with stalagmite and adherent to the rock, in the island of 

 Gozo. According to Dr. Falconer, it consists of two plates of a 

 young grinder of the true Elephas primigenius. 



The occurrence of so large an animal in a locality of such limited 

 extent seems to point to a period when it was Go^^nceted /With a 

 continent. ififlt's-fi^jj (iiii I 



