304 On the chief Generic Types of PaUeozoic Corals. 



corallites budded off from the disk of the calice. 3 a, longitu- 

 dinal section of the same, showing the absence of the columella 

 in the upper portion of the corallum and its presence in the 

 lower portion. Lower Carboniferous, Brockley, near Lesma- 

 hagow, Lanarkshire. 



Fig. 4. Konbickoj>hyUnm Lindstrdmi, Thomson and Nicholson, transverse 

 section ; the external vesicular tissue is extraordinarily dense, 

 and the columella is apparently connected with the septum 

 occupying the septal fossula. Lower Carboniferous, Brockley, 

 near Lesmahagow, Lanarkshire. 



Fiff. 5. Koninckophyllu7n radiatum, Thomson and Nicholson, transverse 

 section. Lower Carboniferous, Charleston, Fifeshire. 



Ftff. 6. Koninckophyllum retiforme, Thomson and Nicholson, transverse 

 section, showing the rectangular dissepiments and the septal fos- 

 sula occupied by two short septa ; the columella is imperfectly 

 cellular. 6 a, longitudinal section of the same. Lower Carbo- 

 niferous, Brockley, near Lesmahagow, Lanarkshire. 



\Fiys. 8, 8 a, and 8 B of the preceding portion of this paper, 

 'Annals,' Februai-y 1876, PI. VIII., are illustrations of Konincko- 

 phyllum magnijictcm. Fig. 8 shows the floor of the calice, with 

 the protuberant columella ; fig. 8 a is a transverse section of the 

 same ; and fig. 8 b is a longitudinal section, showing the colu- 

 mellar\- line, with the elevated tabulae around it.] 



Plate XIV. 



Fig. 1. Lithostrotion hasaltifonne, Flem., a transverse section, showing a 



portion of the internal structure and the aspect of the calices. 



Lower Carboniferous, Arbigland, Dumfriesshire. 

 Fig. 2. Lithostrotion Portlocki, Bronn, transverse section of a small slab; 



2 A, longitudinal section of the same ; 2 b, a few of the corallites 



enlarged. Lower Carboniferous, Dunbar. 

 Fig. 3. Lithostrotion M' Coyamtm, E. & H., transverse section of a small 



slab. Lower Carboniferous, Penrith, Cumberland. 

 Fig. 4. Lithostrotion F/emingii, M'Coy : the crown of the dome-shaped 



mass is ground away, exhibiting the arrangement of the septa 



and, towards the margin, the calices. Lower Carboniferous, 



Arbigland, Dumfriesshire. 



Plate XV. 



Fig. 1. Lithostrotion Phillipsi, E. &; H., transverse section of a small slab ; 

 1 A, longitudinal section of the same, showing the columellary 

 line. The absence of the columella in parts is due to the flexuous 

 form of the corallites. Lower Carboniferous, Arbigland, Dum- 

 friesshire. 



Fig. 2. Lithostrotion Martini, E. & H., transverse section of an unusually 

 large variety. Lower Carboniferous, Arbigland, Dumfriesshire. 



Fig. 3. Lithostrotion irreytdare, Phill., transverse section of a small slab. 

 Lower Carboniferous, Boghead, near Lesmahagow. 



Fig. 4. Lithostrotion junceum, Flem., longitudinal section of a small slab ; 

 4 A, transverse section of a small slab of the same ; 4 b, a few 

 of the corallites enlarged, showing the peculiar arrangement of 

 some of the primary septa. I^ower Carboniferous, Brockley, 

 Lesmahagow. 



Plate XVI. 



Fig. 1 . Lonsdaleia rugosa, IM'Coy, transverse section of small slab, .show- 

 ing the development, from the young corallite emerging from 



