400 



Lima. (Species indeterminable.) 



A single specimen of a rather large species of Lima, apparently of the 

 Plagiostoma group, collected by Mr. Richardson, in 1872 (not 1871), at 

 the entrance to Departure Bay, V.I., was referred to L. multiradiata, 

 Gabb, with a query, on page 174 of the second part of this volume. This 

 identification, however, is far from satisfactory, as only a very small piece 

 of the test is preserved on the Canadian fossil. 



Two very similar specimens, except that they are mere casts of single 

 valves, without any portion of the test preserved, were collected by Mr. 

 Harvey, in 1901, at Extension mine, three miles south-west of Nanaimo, 

 V.I. Both of these casts, which are now in the Museum of the Survey, 

 are marked by very numerous, narrow, radiating ribs. In one of them, 

 seven or eight of the ribs are a little larger than the rest, and in the other 

 the ribs are rather irregular in size and distribution. 



Spondylus. (Species uncertain.) 



Cfr. Spondylus fragilis, Stanton. 189G. Bull. U. S. Geol. Snrv. No. 133, p. 35, pi. ii, 



fig. 3. 



Among the fossils collected during Captain Palliser's explorations a 

 "small piece of glauconitic rock labelled No. 48 (below the Lignite), 

 Departure Bay, Nanaimo ; Ostrea bella, Conrad ; Dr. Hector, 1860 ; coll., 

 Mr. Mackay — contains a few valves or fragments of valves of a species 

 of Ostrea, and a single valve of a shell whose generic and specific 

 relations are uncertain. This valve is sixteen lines and a half in length 

 and about fourteen and a half in breadth. It is moderately convex, but 

 with a rather broad, shallow, transverse constriction a little in fi'ont of 

 the mid-length, obliquely subovate in outline, a little longer than broad, 

 and the extremely thin test is marked with fine radiating raised lines, 

 about three in the breadth of a millimetre, which are minutely bifurcating 

 anteriorly, when viewed with a lens. It is much more finely ribbed than 

 the convex valve of Ostrea hella, if Conrad's figures are correct, and 

 indeed its surface markings are not at all like those of an Ostrea. A 

 fragment of a much larger specimen in the collection, from the same 

 locality and apparently belonging to the same species, has essentially the 

 same sculpture on the interior of the shell as the Spondylus complanatus 

 of d'Orbigny,* from the French Neocomien. Another specimen in the 

 collection, from the same locality and possibly also belonging to the same 

 species, is the No. 41 of the list of specimens on page 243 of Capt. 

 Palliser's report. It is a rough cast of the interior of one valve, about 



*Paleontologie Frangaise, Terr. Cret,, vol. Ill, p. 657, pi. 451, figs. 7-10. 



