48 



Hamites (?) (Sp. iindt.) 



Plate IX., figure 3. 



Compare Hamites elegans, D'Orbigny. 



" Paleontologie Fi'an^aise. Terrains Cretaces." Vol. 1., pages 542 and 543. Atlas, 

 Plate CXXXIII., figs. 1 to 5. 



A single fragment of a eeplialopodous shell, about an inch in length by 

 four lines in diameter, which is referred to this genus with much doubt. 



The specimen is quite straight and does not decrease in width very 

 perceptibly. As viewed transversely, its outline is compressed ovate, 

 the greatest width of the ovoid being across what is presumed (by 

 analogy) to be the siphonal edge. 



The surface is marked by transverse but slightly oblique ribs, which 

 are narrower than the shallowly concave grooves which separate them. 

 There are also three pairs of obtusely rounded tubercles on the periphery. 

 The tubercles of each separate pair are very close together on the 

 siphonal edge, being scarcely more than a line apart, but the pairs 

 themselves are placed at distant intervals along the length of the shell. 

 The arrangement is uniformly as follows : — five simple and non-tuber- 

 culate ribs encircle the shell obliquely, and between each set of five, two 

 or three ribs intervene, which, together, bear a pair of tubercles. Each 

 of the latter are wide enough to embrace two or three ribs. The distance 

 between two pairs of tubercles is generally about one-third of an inch, 

 measuring from the centre of the summit of each. 



This species is placed in the genus Hamites, i3rincij)ally on account of 

 the strong resemblance which it bears to the H. elegans of D'Orbigny, 

 of which it may prove to be an extreme variety. Still, the Queen 

 Charlotte Island fossil is flatter than H. elegans, and seems always to 

 have five uninterrupted ribs between those which bear the tubercles" 

 In D'prbigny's species there appear to be never more than four, and 

 sometimes only two non-tuberculated ribs in each set. 



GASTEEOPODA. 



Amauropsis Tenuistriata, (N. Sp.) 



Plate IX., figs. 4, 4a. 



Shell subovate, spire short, body whorl about three-fourths of the entire 

 length ; umbilicus entirely closed. 



