SUPPLEMENT, PLATE XXXVIL 
CARBONIFEROUS. 
Pig. 
1, 2, 2 a. Strepforhi/nchus crenistria, Phillips. Two very large examples (somewbat flat- 
tened). 1. From Carb. Shale, Auchenskeoch. 
2. From Auchenskeoch, Ayrshire. Collection 
of Mr. J. Thomson. 2 «. A portion of shell 
magnified to show shell sculptm-e. (P. 288.) 
3. „ „ A perfect bivalve example from Carb. Shale of 
R,oughwood, Ayrshire. Collection of Mr. James 
Thomson. (P. 289.) 
4, 5. „ „ Two curious malformations. 4. Carb. Shale, 
Abbey Craig Quarry, near Bridge of Allan, 
Scotland. 5. Carb. Shale, Chapel Hill, Kirk- 
caldy, Scotland. Collection of Mr. C. H. 
Peach. (P. 290.) 
6, 6 r/, b. ,5 var. cylindrica, M'Coy. From an arenaceous 
deposit, base of Millstone Grit Series, Tri- 
fergus Glen, Campbeltown, Scotland. Collec- 
tion of Mr. J. Thomson. (P. 290.) 
7, 7 a. „ „ Internal cast in a Light Grey Sandstone, base of 
Millstone Grit, or probably a passage bed 
between that and the Upper Limestone Series. 
Railway cutting, Garngad Road, Glasgow. 
Collection of Mr. James Neilson. (P. 290.) 
