SUPPLEMENT, PLATE XXXIII. 
CARBONIFEROUS, 
Fig. 
1. Syringothyris {Spiriferd) cuspidata, Martin. After a figure by Prof. King, showing the deltoid 
fissure near its base, covered by a number of arching lamellae. Geol. 
Museum, Queen's College, Galway. (P. 278.) 
2. ,> Section of the same rubbed down to show flattened, subtransparent 
fibres, running straight, or winding about most irregularly. Inter- 
spersed among the fibres occur a number of spots, undoubtedly 
transverse sections of tubular perforations, which, varying in size, have 
in general a diameter about equal to the width of the two fibres 
(King). (P. 279.) 
3. cuspidata. From Carboniferous Limestone of Milecent, Kildare. Section cut 
across, a, b. Fig. 3 a. A transverse section of the beak cut through 
by Dr. Carpenter, to show the conjoining dental plates, transverse 
plate, and incomplete tube. Indications of the spiral coils are like- 
wise exposed. (P. 279.) 
4,5. „ distans, ^ow. A foreign specimenfrom Carboniferous Limestone of Vise,in Belgium: 
4. Part of beak of ventral valve, showing the area, pseudo-deltidium, 
dental plates, transverse plate, and incomplete tube under it. 5. The 
same viewed from the opposite side, the shell forming the beak of the 
ventral valve being removed so as to show the shape and position of 
the dental plates, as well as the position of the transverse plate and 
tube. Figs. 4 and 5 are enlarged. (Pp. 280, 281.) 
6. Spiriferina Etheridgei, Dav. 6. Nat. size. 6, a, h, c. Enlarged. After Etheridge. In shale 
between bands of No. 2 Limestone (= Hosie Limestone) of the Lower 
Carboniferous Limestone Group of Midlothian, FuUarton Quarry, 
near Temple, Edinburghshire. (P. 278.) 
7 — 9. Rhynchonella reflexa, de Koninck. 7. Nat. size. 7 a. Enlarged. Carboniferous Limestone 
Little Island, Cork. 7 c. Another example, same locality, being the 
largest specimen I have seen. Collection of Mr. Joseph Wright, of 
Belfast. 8. Nat. size. 8 a, b, c. Enlarged. Carboniferous Limestone, 
Yorkshire. 9 a, b, c. Carbon. Limestone, Wetton, Settle. (P. 284.) 
10. „ Glassii, D&y . 10. Nat. size. 10 a, 5. Enlarged. Carboniferous Limestone, Wetton, 
Stafifordshire. (P. 285.) 
11, Rhynchopora Youngii, Day . 11. Nat. size. 11 a, b. Enlarged. 11 c. Portion of shell magni- 
fied 50 diameters to show orifices of canals that traverse the shell. 
Upper Carbon. Limestone, Bowei'trapping, Dairy, Ayrshire. (P. 286.) 
12,13. Camarophoi-ia Kingii, Dav. 12. Carboniferous Limestone, near Kiltieruan, about eight miles 
south of Galway, on the road to Gont. 13. Internal cast, showing 
muscular impressions, wide trough-shaped process, and pits left by 
the long, slender, curved processes. Geological Museum, Queen's 
College, Galway, Ireland. (P. 287.) 
