36 The Irish Nahiralist. 



cracks ("perlitic" structure), and spherical aggregates of 

 imperfect cp^stals ("spherulitic" structure), remain to assure 

 us of its original condition. 



For such volcanic isles, and for similar products, we need 

 not at the present day go to eastern seas. The I^ipari Islands, 

 north of Sicily, serve as representatives of the Ordovician 

 cones of Co. Dublin. And quite recentl3^the eruption between 

 Sicily and Tunis' has shown us how submarine action flings 

 up pumice and scoriae to the surface, where they float until 

 water-logged, finally sinking to be included in the shell-beds, 

 or the sediments from the land. 



(TO BTv CONTINUED.) 



THE COLEOPTKRA OF THE ARMAGH DISTRICT. 



BY RKV. W. F. JOHNSON, M.A., F.^.S. 



{Contimied from Page 18.) 



HATvIPI^ID^. 



BrycMus elevatus, Panz. — Dean's river — not common. 

 Haliplus obliqxms, Kr. — Lough nashade — not common. 

 H. coufinis, Stepli. — Lowr3-\s Lough — not common. 

 H. fulvus, F. — Lowr3''s Lough — common. 

 H. ruficollis, De G. — Common throughout district. 

 H. fluviatilis, Aube. — Loughnashade — not common. 

 H. lineatocollis, Marsh. — Common throughout district. 



D V T I s c I D ^. 



Noterus clavicornis, De G. — Loughgall, MulHnure — not common. 



N. sparsus, Marsh. — Loughnashade, Mullinure, Lowry's Lough — pretty 



common. 

 L?wCCopliilus obsciirus, Panz.— Lowry's Lough, etc.— common. 

 Hyphydrus ovatus, L.— Loughgall, Lowry's Lough— common. 

 CcBlambus quinquelmeatiis, Zett.— Lowry's Lough, etc. — common. 



C. inosqualis, F.— Common throughout district. 



C novsmlineatus, vSteph.— Lowry's Lough— not common. 



Bei'onectes assimilis, Payk.— Drummanmore Lake, Lowry's Lough— not 



common. 

 23. depressus, F. — Common throughout district. 



D. duodscim-pustulatus, Fab.— Dean's River— plentiful at certain spots. 

 Hydroporus pictus, F.— Common throughout district. 



H. lepidus, Ol. — Pond beside railway in Drummanmore, Lowry's Lough 



— not plentiful. 

 H. rivalis, Gyll.— Dean's River— rare. 

 H. davisii, Curt.— Dean's River, Lowry's Lough— scarce. 

 H. lineatus, F. — Common throughout district. 

 H. tristis, Payk.— Mullinure— rare. 



' G. W. Butler, " On the Eruption N. W. of Pantelleria, October. 1891." 

 Nature, xlv., p. 251. 



