SUPPLEMENT, PLATE X. 



Ftg. 

 1. 



2, 2 a, b. 



3, 3 a, b. 



4. 



5, 6. 



7, 7 a. 



8, 8 a. 



9 to 10, 



11. 

 12, 13, 14. 



15, 16. 



17. 



18, 18 a—c. 



19, 19 a 



20, 21. 



22—22 a. 



23. 



24, 24 a. 



25, 25 a. 



26, 26 a. 



27, 28, 29. 



30, 30 a. 



31. 



32—37. 



Rhynchonella cuneata, Dal. 



Wenlock, Dudley. Developed by the Rev. N. Glass to show 

 short curved crura for the support of labial appen- 

 dages. 2a, 6. Enlarged. (P. 1.t2.) 



Dayi, Dav. Wenlock limestone and shales, Benthall Edge. 2 a, b. Enlarged. 

 (P. 152.) 



bidentata, Hisinger. Wenlock limestone and shales, Benthall Edge and 

 Buildwas, Shropshire. 3 a, 6. Enlarged. (P. 150.) 



diodonta, Dal. Wenlock shale, near Dudley. (P. 151.) 



sub-borealis, Dav. Llandeilo, Craio;head, Girvan. Coll. of Mrs. R. Gray. 



6 a. Enlarged. (P. 149.) 



Lapworthi, Dav. Llandeilo, Craighead, Girvan. Coll. of Mrs. R. Gray. 



7 a. Enlarged. (P. 154.) 



„ sp. ? Llandeilo, Balcletchie Conglomerate, Balcletchie, Girvan. 



Coll. of Mrs. R. Gray. 8 a. Enlarged. (P. 154.) 



cuneata, Dal.? 9. Llandeilo, Craighead, Girvan. Coll. of Mrs. R. Gray. 

 9 a,b. Enlarged. 10. Internal cast. 10 a. Interior 

 of dorsal valve. Taken from cast. Upper Llan- 

 dovery, Speakes Rough, near Minsterley, Salop. 

 Coll. of Mr. R. Philip. (P. 152.) 



cuneatella, 'D&\ . 11, 11 a. Llandeilo, Balcletchie Conglomerate, Girvan. 

 Coll of Mrs. R. Gray. 1 1 a. Enlarged. (P. 200.) 



Portloekiana, Dav. Llandeilo, Balcletchie Conglomerate, Balcletchie, Girvan. 

 Coll. of Mrs. R. Grav. 12 a and 14 o. Enlarged. 

 (P. 159.) 



Balcletchiensis, Dav. Llandeilo, Craighead, and Balcletchie Conglomerate, 

 Girvan. Coll. of Mrs. R. Gray. 15, 16. Nat. size. 

 (See also PI. XI, fig. 23.) (Pp. 160, 200.) 



(Emula, Salter Bp.f. Upper Landovery, Penkill, Girvan. Coll. of Mrs. R. 

 Gray. Much enlarged. (P. 160.) 



Callawayana, Dav. Wenlock shales, Walsall. Coll. of Dr. C. Callaway. 



18 a, 6, c. Enlarged. (P. 159.) 

 Shallockiensis, Dav. Llandeilo, Shallock Hill, Girvan. Coll. of Mrs. R. Gray 



19 a. Enlarged. (P. 154.) 



nasuta, M'Coy. Llandeilo, Craighead, Girvan. 21. Coll. of Mrs. R. Gray. 



(P. 160.) 

 Glassiana, Dav. {Atrypa depressa, Sow.). 22. Exterior. 22 a. Interior of 



dorsal valve developed by the Rev. N. Glass to 



show the two curved processes of Rhynchonella. 



Woolhope limestone, road between Alfric and Crew 



Station, Malvern. 22 a. Enlarged. (Pp. 155, 219.) 

 defiexa. Sow., sp. Specimen developed by the Rev. N. Glass to show the 



two short curved crura. Wenlock limestone, 



Benthall Edge. (P. 156.) 

 Weaveri, Salter. ? Llandeilo, Craighead, Girvan. Coll. of Mrs. E. Gray. 



24 a. Enlarged. (P. 158.) 

 borealis, Sch. Young specimen. 25 a. Enlarged. Wenlock limestone, 



Benthall Edge. (P. 148.) 

 Girvaniensis, Dav. Llandeilo, Balcletchie Conglomerate, Girvan. Coll. of 



Mis. R. Gray. 26 a, Enlarged. (P. 155.) 

 nucula, Sow. 27. Upper Ludlow, Ludlow. 28. Upper Llandovery, Hope, 



Shropshire. Coll. of Rev. H. Day. 29. Middle 



Caradoc, Shallock Mill, Girvan. Coll. of Mrs. R. 



Gray. 27 a. Enlarged. (P. 157.) 

 ,, var. ? Llandeilo, Balcletchie Conglomerate, Balcletchie, Girvan. 



Coll. of Mrs. R. Gray. This identification is 



uncertain. 

 „ var. Upper Llandovery, Minsterley, Shropshire. 

 Llandoveriana, Dav. 32 to 35. Typical specimens. Upper Llandovery, 



Minsterley, Shropshire. Coll. of Mr. R. Philip. 



32 a. Enlarged. 36,37. Upper Llandovery, Cam- 



regan Wood, Girvan District, Ayrshire. (P. 157.) 



