DOUBTFUL SPECIES. 183 
73. Tracos Binneyi, King. 
1850. Mon. Permian Foss., Pal. Soc., vol. iv, p. 18, pl. ii, fig. 6. 
The type-specimen, now in the Museum of Queen’s College, Galway, shows no 
traces of organic structure, and appears to me to be of inorganic origin. It comes 
from Bradford, near Manchester. 
74, TRAGOS SEMICIRCULARE [18], M*Coy. 
1844, Synop. Carb. Foss. Ireland, p. 196, pl. xxvii, fig. 8. 
The typical, figured example of this species, now in the Museum of Science and 
Art, Dublin, is a fish tooth, weathered out on the surface of a slab of limestone. 
It comes from the Carboniferous (Upper Limestone series) of Manor Hamilton. 
75. Tracos TunstTattensis, King. 
1850. Mon. Permian Foss., Pal. Soe., vol. iv, p. 18, pl. ii, fig. 5. 
The type forms included in this species show no traces of organic structure, 
and appear to be only small nodular secretions, in one instance enclosing a small 
Murchisonia. IT am unable to distinguish the fibrous texture described by the 
author. The specimens, labelled apparently in Professor King’s own handwriting, 
are now in the Museum of Queen’s College, Galway. They are from Magnesian 
Limestone (Permian), Tunstall Hill, Durham. 
76. VERTICILLIPORA ? ABNORMIS, Lonsdale. 
1839. Silurian System, p. 693, pl. xvi bis, figs. 10 a—10 d. 
The type-specimen, now in the Museum of the Geological Society of London, is 
a small coral or polyzoén. Though the author placed it in a genus of reputed 
Sponges, he yet regarded it as a coral. It is relegated to the genus Ceriopora, 
Goldfuss, in ‘ Morris’s Catalogue,’ 2nd ed. p. 120; but in ‘ Siluria,’ ed. 1867, it 
still retains the original name and is placed under the Amorphozoa (p. 509). The 
specimen is from Ludlow strata at Pyrton, Gloucestershire. 
