County Dublm, Past and Present. 57 



from them or from others which have long since disappeared, 

 by the action of frost or the slow widening of their joints 

 (see fig. 6). The ridge from the head of Glencullen to Two 

 Rock Mountain gives admirable lessons in the mode of wea- 

 thering of the rock, the decomposition of the felspar setting 

 free the quartz and mica, and a sort of sand thus spreading 

 around each boulder into the black vegetable soil. 



The contrast of outline between the granite background and 

 the sedimentary masses of the Sugarloaves, or the easily 

 denuded Carboniferous on which Dublin city stands, is well 

 known to all who have crossed from Holyhead/ But to those 

 who explore the glens and passes, traversed now by some of 

 the highest roadways of the British Isles, the characteristic 

 features of the granite will reveal themselves at all points, 

 and with a breadth and a variety that custom never stales. 



THE COI.EOPTKRA OF THE ARMAGH DISTRICT. 



BY R:e;v. W. F. JOHNSON, M.A., F.E^.S. 



{^Continued from page 38.) 



STAPHYI^INID^. 



Homalota trinotata, Kr. — dowry's Lough, in moss, I also took a spe- 

 cimen on the top of the tower of the Cathedral. 



H. nigricornis, Thoms. — Mullinure — rare. 



H. corvina, Thoms. — Mullinure — rare. 



H. atomaria, Kr. — Mullinure, in moss — not common. 



H. sericea, Muls. — Dean's Hill— not common. 



H. atricolor, Sharp. — Palace Demesne, Drummanbeg Lake, Mullinure. 



H. nigra, Kr. — Mullinure — not common. 



H. atramentaria, Gyll.— Mullinure — not common. 



H, sordida, Marsh. — Lowry's Lough, Mullinure — not common. 



H. aterriraa, Grav. — Common throughout district. 



H. pygmaea, Grav. — Lowry's Lough, in moss — rare. 



H. muscoruni, Bris. — Mullinure— rare. 



H. laticollis, Steph. — Mullinure, in moss — not common. 



H. fungi, Grav. — Common throughout district. 



H. clieutula, Er. — Lowry's Lough, in moss — not common. 



Tachyusa umbratica, Er.— Lowry's Lough, Drumbee, Mullinure— pretty 

 common. 



T. atra, Grav. — Mullinure, in moss — not common. _ 



Falagria obscura, Grav. — Common throughout district. 



Autalia rivularis, Grav. — Lowry's Lough, in moss. 



Eucephalns conxplicans, Westw.— Palace Demesne, Mullinure, Little 

 Castledillon, in moss and in nest of Alyrmka. 



Gyrophsena Isevipennis, Kr. Palace Demesne, in moss — not common. 



Myllaena dubia, Grav.— Loughnashade, Grange, in moss— not common. 



M. intermedia, Er. — Lowry's Lough, Drummanmore, in moss— not 

 common. 



M. minuta, Grav. — Lowry's Lough, in moss — not common. 



' See also Weaver's drawings. Trans. GeoL Soc. London, ist ser., v., pi. 8. 



