108 
HIND : NEW CARBONIFEROUS NAUTILOIDS. 
P. impressus, De Koninck, has some resemblance to the 
species under discussion, but its transverse ribs do not bifurcate 
and do not become stronger on the sides of the shell. The same 
character also separates the species from P. vergatus, De Koninck. 
EXPLANATION OF PLATES. 
Plate III. 
Fig. 1. — Solenocheilus globosus, a complete specimen, from the 
roof of the Bullion Coal, Burnley, in the Geological 
collection of the Manchester Museum, p. 100. 
Fig. 2. — Solenocheilus globosus . The same specimen, lateral aspect. 
Plate IV. 
Fig. 1. — Solenocheilus globosus, a specimen showing the septa 
and camerae from shale, just below the Millstone Grit, 
Caton, Lancashire. My collection, p. 99. 
Fig. 2. — Ephippioceras W ildi, the camerae end of the body chamber, 
showing the siphuncle. From the roof of the BulUon 
Coal, Burnley, My collection, p. 105. 
Fig. 3. — Pericyclus minimus, a specimen from the Carboniferous 
Limestone of Thorpe Cloud. Lateral aspect. My 
collection, p. 107. 
Figs. 4, 5 and 5a. — Pericyclus minimus, younger specimens. Same 
locality and collection, p. 107. 
Plate V. 
Fig. 1. — Ephippioceras Wildi, a complete specimen from the 
Bullion Mine, Burnley. In the Geological Collection 
of the Manchester Museum, p. 104. 
Fig. 2. — Ephippioceras Wildi. A view of the body chamber, 
peripheral ^aspect. 
Plate VI. 
Fig. 1. — Ephippioceras Wildi. A specimen from the roof of the 
Mountain Mine, Sholver, nr. Oldham. In the Geological 
Collection of the Manchester Museum, p. 104. 
