364 



twelve largest in the tentacula about thirty-six sharp and 

 equal teeth. The general form of the whole animal much re- 

 sembles Onychoteuthis Leachii — a cephalopod of a different 

 genus, with which it may be confounded by a casual observer. 

 Mr. Ball proposed to name the species Loligo Eblanae.* 



In addition to the foregoing, the following species of 

 Loligo have fallen under Mr. Ball's notice, as occurring in the 

 Irish seas : — 



Loligo sagittata var. differing in the shortness of its ten- 

 tacula from the figure given by Ferussac. Several speci- 

 mens were taken off the coast of Cork by George Allman, 

 Esq. 



Loligo vulgaris. 



Loligo media. 



Loligo media var. — easily distinguished by its greater 

 proportionate length of body, and by the shortness of its 

 tentacula, from the true L. media ; in the form of the fin ter- 

 nating its mantle, it strongly resembles Loligo subulata. A 

 few specimens, obtained on the coast of Down by the late J. 

 Montgomery, Esq., were submitted to Mr. Ball's inspection 

 by W. Thompson, Esq.f 



Mr. Clarke read a paper " on atmospheric Electricity." 



The author commenced his paper with a description of 



the apparatus which he had employed in the experimental 



investigation of this subject. He showed the inapplicability 



of the electrometers hitherto employed, and exhibited an 



* The ancient name of Dublin. 



t Since the foregoing was written, Mr. Ball was favoured with an inspection 

 of Cuttle-fish bones, found at different times on Magilligan Strand, county of Derry, 

 by Mr. Hyndman, of Belfast. They seem to be those of Sepia rupellaria, figured in 

 Ferussac's third plate of Sepia. His attention was also directed to beaks of Cuttle- 

 fish, found in the stomachs of Delphinus melas and Hyperoodon bidens. They 

 belonged to a species of Cephalopod he has not yet determined. As he purposes 

 writing a monograph of the Cephalopoda of the Irish seas, he requests information 

 on the subject from all who can afford it. 



