On the Palceontology of County Dublin. 179 



List of Fossil Localities in Lower Coal Measure Shales. 



56. A little north of the village of Garristown. 



19. Townlancl of Tobergreggan ; junction-beds mentioned in previous 

 list. 



57. Do., one mile and a-half W.S.W. of Garristown. 



58. Townlancl of Westown ; quarry a little S. of the wood. 



59. „ of Knockbrack ; small quarry in the glen. 



60. „ of Kitchenstown ; in a ditch S. of the road. 



61. „ of Belgee ; quarry a little S. of the cross-roads. 



21. „ of Balrickard ; junction-beds mentioned In previous 



list. 



62. „ of Courtlough ; quarry close to road about three quar- 



ters of a mile N.W. of " Man- of- War f upper part 

 coal measures. 

 24. „ of Loughshinny ; junction-beds mentioned in previous 



lists. 



List of Fossils from Coal Measure Shales at the Above 



Places. 



Plantjs. 

 Calamites cannseformis, . . 58. 

 Plant stems (undetermined), . 58, 59. 



Mollusca : Conchifera. 

 Aviculopecten papyraceus, , . 56, 58, 59. 



,, variabilis, . . 58, 62. 



Lunulicardia (species undetermined), 58. 

 Posidonomya Becheri, . . 60, 61, 62. 



„ membranacea . 56, 57, 58, 59, 62. 



Cephalopoda. 

 Goniatites sphaaricus, . ♦ • 56, 57, 58, 59, 61. 

 Orthoceras Steinhauerii, . . 56, 57. 



„ (species undetermined), 56, 57, 58, 62. 



Echinodermata. 

 Crinoidea (stems and joints), . 58, 59. 



Crustacea. 



Dithyrocaris (species undetermined), 58. 



The Secondary and Tertiary Rocks are entirely absent from this 

 district, with the exception of the Pleistocene or GlacialDrift, which 

 extends over the northern portion. Southwards of Malahide this 

 more ancient deposit, called the "Lower Boulder Clay,"* " becomes 

 covered by the sand and gravel deposit which on the hio-her 



* Explanation to sheets 102 and 112, 2nd edition (1875), p. 67. 



