﻿part 4] PHILLIPS ASTERS A HENNAHI, AND ORIONASTKJEA. 



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EXPLANATION OF PLATES XXII-XXIV. 



Plate XXII. 



Phillipsastrsea and Aulina. 



Fig-s. 1-4. Phillipsastrsea hennahi (Lonsdale). Holotype of Astrxa hennahi. 



Upper Devonian. Barton (Devon). Museum of Practical 

 Geology, Jermyn Street, London. No. 6185 and Sections 

 28348-28349. (See p. 288.) 

 Fig. 1. External surface of No. 6185. Natural size. 



2. Transverse section (28348). Natural size. 



3. The same. X 6. 



4. Longitudinal section (28349). X 2-5. 



Fig. 5. Phillipsastrsea sp. (cf. Acervularia coronata Edwards & Haime, 

 'British Fossil Corals' Monogr. Pal. Soc. pi. liii, fig. 4 6). 

 Transverse section showing dilatation of the axial edges of 

 the septa. X 4. Upper Devonian. Devon. British Museum 

 (Natural History), E 5632 (Vicary Collection). (See p. 286.) 



6. Aulina rotiformis, sp. nov. Paratype. Transverse section. X 5. 



Fell Top Limestone. Harlow Hill (Northumberland). British 

 Museum (Natural History), E 17714. Collected by the Author. 

 (See p. 291.) 



7. The same. Natural size. 



8. Aulina rotiformis, sp. nov. Longitudinal section. X 2. Botany 



Beds, Hurdorthwaite Moor. British Museum (Natural History), 

 E 17716. Collected by Prof. E. J. Garwood. 

 Figs. 9-11. Aulina rotiformis, sp. nov. Showing earliest growth-stages of 

 the corallite. X 5. (Same section as figs. 6 & € 7-) 



Plate XXIII. 



Orionastrsea. 



All forms are from the upper part of the Dibunophyllum Zone. 



Fig. 1. Orionastrsea phillipsi (McCoy). Lectotype. Distal surface. Natural 

 size. Hafod-y-Caleh, Corwen. Sedgwick Museum, Cambridge, 

 No. 213 a. (See p. 298.) 



2. Transverse section of the above. Natural size. 



3. Orionastrsea phillipsi (McCoy). Distal surface. Hafod-y-Calch, 



Corwen. Natural size. Sedgwick Museum, Cambridge, No. 213 b. 

 Specimen labelled as having been figured by Edwards & Haime, 

 in ' British Fossil Corals ' Monogr. Pal. Soc. pi. xxxvii, fig. 2. 

 Nos. 213 a & 213 b (two specimens mounted on the same tablet) 

 are the type -specimens of Sarcinula phillipsi McCoy, but the 

 species was not figured by him. 



4. Orionastrsea phillipsi (McCoy). Type- specimen of Sarcinula tuberosa 



McCoy. Distal surface. Natural size. Derbyshire. Sedgwick 

 Museum, Cambridge, No. 212. (Presented by W. Hopkins.) 



5. Transverse section of the above. Natural size. (See p. 300.) 



6. Orionastrsea placenta (McCoy). Holotype of Sarcinula placenta 



McCoy. Distal surface. Natural size. Derbyshire. Sedgwick 

 Museum, Cambridge, No. 211. (Presented by W. Hopkins.) 



7. Transverse section of the same. X 3. (See p. 301.) 



8. Orionastrsea placenta (McCoy). Transverse section. X 2. Upper 



Grey Limestone. Llangollen. British Museum, E 4412 (G. H. 

 Morton Collection). 



9. Longitudinal section of the same specimen. X 2. 



