998 ORDOVICIAN AND SILURIAN BRACHIOPODA OF THE GIRVAN DISTRICT. 



Fig. 33. Dayia cymbula (Dav.), var. nov. girvanensis. Internal cast of complete shell, brachial side, 

 x 2. Starfish Bed, Drummuck Group, Thraive Glen. G. 



Fig. 33a. Ditto. Same specimen, pedicle side. x 2. 



Fig. 33/>. Ditto, ditto. Posterior view. x 2. 



Fig. 34. Ditto. Complete shell from brachial side. x 2. Drummuck Group, Drummuck. G. 

 (Figured, Davidson, Suppl., pi. viii, fig. 6.) 



Fig. 35. Ditto. Internal cast of umbonal region of brachial valve, x 2. Same horizon and locality. G. 



Fig. 36. Dayia sp. Internal cast of pedicle-valve. x 3. Camregan Group, Bargany Pond Burn. 



Fig. 37. Cyclospiral diversa, sp. nov. Internal cast of brachial valve. x 3. Balclatchie Group, 

 Ardmillan. G. 



Fig. 38. Ditto. Internal cast of pedicle-valve. x 3. Same horizon and locality. G. 



Fig. 39. Ditto, ditto. x 3. Same horizon and locality. G. 



Fig. 40. Ditto, ditto. x 3. Same horizon and locality. G. 



Fig. 41. Ditto. Internal cast of brachial valve. x 3. Same horizon and locality. G. 



Fig. 42. Ditto, ditto. x 3. Same horizon and locality. G. 



Fig. 43. Ditto? (broad variety). Pedicle-valve. x 3. Same horizon, Balclatchie. G. 



Fig. 44. Rliynchospira (Homwospira) Bouchardi (Dav.), var. nov. midlochensis. Internal cast of complete 

 shell, brachial side. x 3. Mulloch Hill Group, Mulloch Hill. G. 



Fig. 45. Ditto. Internal cast of imperfect brachial valve. x 3. Same horizon and locality. G. 



Fig. 46. Ditto. Internal cast of imperfect pedicle-valve. x 3. Same horizon and locality. G. 



Fig. 47. Mhynchospira (Homneospira) camretjunensis, sp. nov. Internal cast of pedicle-valve, x 3. 

 Camregan Group, Camregan Wood. G. 



Fig. 48. Ditto, ditto. x 3. Same horizon and locality. G. 



Fig. 49. Ditto. Internal cast of brachial valve. x 3. Same horizon and locality. G. 



Fig. 50. Whitfieldella angustifrons (M'Coy). Internal cast of umbonal region of complete shell from 

 brachial side, x 2. Mulloch Hill Group, Mulloch Hill. S.M. 



Fig. 51. Whitfieldella iiitida (Hall), var. '? Complete shell, brachial side. xl^. Mulloch Hill Group, 

 Mulloch Hill. G. 



Fig. 51a. Ditto. Outline side-view of same specimen. x 1^. 



Fig. 52. Whitfieldella 1 sp. Internal cast of brachial valve. x 2. Starfish Bed, Drummuck Group, 

 Thraive Glen. G. 



Fig. 53. Meristella cf. Circe, Barr. Internal cast of pedicle-valve. x 3. Mulloch Hill Group, 

 Mulloch Hill. G. 



Fig. 54. Ditto, ditto. x 3. Same horizon and locality. G. 



Fig. 55. Meristella'': sp. Internal cast of pedicle-valve. x 3. Starfish Bed, Drummuck Group, 

 Thraive Glen. G. 



Fig. 56. Coelospira scotica (M'Coy), var. Internal cast of brachial valve. x 2. Saugh Hill Group) 

 Newlands. G. 



Fig. 57. Ditto. Impression of exterior of brachial valve. x 1£. Same horizon and locality. G 



Fig. 58. Ditto. Internal cast of pedicle-valve. x 1^. Same horizon and locality. G 



Notb. — Owing to the disastrous fire at the printing works, which destroyed most of the corrected proofs 

 and some of the MS. of this Memoir, much delay has been caused in its publication, and it has been difficult 

 to replace all that was lost, since few duplicate notes had been kept. 



