farm, and is shown 011 the maps and mentioned in the guide-hooks. It is referred to in the 'Trans. 

 Geol. Soc. of Glasgow,' vol. x, pp. 293, 29G. 



The tooth alluded to at p. 197, aud shown in PI. XXVI, figs. 33 and 34, was got from one of the 

 red limestones on the beach. These belong to the Upper Limestone. — J. Neilson, in Letters. 

 Page 127, line 17 from top,,/or is read was. 



„ „ lines 18 and 19, read Calderside, Kirktonholme, and Glebe quarries, and elsewhere in the 

 parish of East Kilbride. Consult ' Memoirs Geol. Survey Scotland,' Explana- 

 tion of Sheet 33, pp. 28—30 ; and Patton, " Geology of East Kilbride," ' Trans. 

 Geol. Soc. Glasgow,' vol. vii, p. 309. — J. Neilson, in Letters. 

 „ ,, line 19 from top, for two feet read eleven inches. 

 ,, 12S, ,, 3 „ for Ironstone read Ironstones ; and after Kutherglen add Lanarkshire 



Coal-field. 

 ,, 132, in the table, bracket 12 and 13 together, and 14 and 15 {not 12 — 14). 

 ,, 133, line 17 from top, read Nos. 12 and 13. 

 „ 18 „ „ Nos. 14 and 15. 



„ ,, ,, 19 „ for is read are. 



,, „ 3 from bottom, for Ch. read Calyptocaris. 

 „ 135, last line of the table, for Clmnocaris read Cahjptocaris. The bracket should not include 



No. 27. 

 ,, 139, line 2 from top, after fluted add , showing the ventral aspect. 

 „ ,, ,, 13 ,, add Aspect doubtful. 



„ 140 ,, 6 ,, add The granulation of the dorsal surface extends over the ridge also. 

 „ ,, ,, 16 ,, add Probably ventral aspect. 



,, ,, ,, 9 from bottom, insert Additional specimens of Dithyrocaris glabra, Brit. Mus., Nos. 2, 

 3, 4, 5, 7, all from East Kilbride. 

 No. 2 in non-calcareous black shale. No. 3, two separate left valves. These have no fringe on 

 the ventral border, but the edge is turned up as a sharp rim along its front half. In very slightly 

 calcareous black shale. Nos. 4 and 5 in black shale slightly calcareous. No. 5 is a left valve, 

 together with the filmy relic of another similar valve, with a narrow fringe and very fine mesolateral (?) 

 ridge. No. 7 a right valve, badly preserved as a light brown film. No. 8 (PI. XXV, fig. 2) has a 

 delicate fringe, continued forward into the simple raised ridge. Mus. Geol. Surv. Scotl., No. 25, is 

 from " the shore east of Ardross Castle, Elie." In the British Museum there is a group of fifteen 

 loose pieces of black shale with fragments of D. glabra, of which seven are from Ardross and eight 

 from Castle Ardross. 



" There are two places at Ardross where fossils are found. One is a little west of the remains 

 of the old castle, and the other about a hundred yards east of it. The latter place is where 

 Dithyrocaris and other crustaceans are met with. 'Ardross' and 'Ardross Castle' are used 

 indifferently for either or both spots. Ardross itself is a farmhouse, and nearest to the Dithyrocaris 

 locality. There is no village called Ardross. Elie is about a mile to the west, and is the nearest 

 post-town and railway-station." — J. W. Kihkby, July 5th, 1898. 



Page 144, line 5 from bottom, add At its broken end in front the ridge overrides the edge of the right 



valve, and its left side has been pressed at a steep angle to the 

 other valve. 

 „ 145 ,, 12 from top, add Another D. granulata is Brit. Mus., No. 13, from East Kilbride. It 



has a rugose mesolateral ridge. 

 „ „ „ 14 „ add 10 after 6. 

 „ 140 „ 13 „ add The style is bayonet-shaped, with a midrib more or less recog- 



