PLATE 120. 
Fig. 1-7. Platyceras reflexum. 
1 a, b. View of the upper side of the spire, and of the aperture of a small specimen. 
2 a. b. Similar views of a shorter form of the same species. 
3. A larger specimen of the same species. 
4. A specimen in which the first volution of the spire is concealed. The surface shows some 
obscure marks of spiral plications. 
fl. A large specimen in which the last volution is more than usually deflected, standing al¬ 
most at a right angle with the preceding volution. 
6 a, b. Two views of a specimen in which the aperture is obtusely quadrangular. 
7 a, b. A similar specimen with the preceding, where the last volution is less deflected than 
usual from the direction of the preceding volutions. 
Fig. 8. Platyceras? ( Platyostoma?) callosum. 
8 a. View of the back and upper part of the last volution. 
8 b. View of the aperture, spire, and callosity of the columellar lip. 
