364 



Tersely, but on the three lower volutions these ribs appear to be absent, 

 though their absence may be due to the exfoliation of the outer layer of 

 the shell ". (Op. cit. supra.) 



Capulus coRRtJGATUS. (Nom. prov.) 



Plate 45, figs. 2 and 2 a. 



Shell varying in external contour from conical and considerably ele- 

 vated, with a subcentral, prominent, pointed and slightly incurved apex, 

 to depressed patelliform, with an obtuse apex ; aperture large, irregular 

 in outline, varying from nearly circular to widely subovate, but always 

 a little longer than wide. 



Surface marked by narrow, concentric, annular wrinkles, and by fine 

 strife of growth. Muscular impressions unknown. 



Puntledge or Comox River, near Comox, V.I. : three specimens, two 

 collected by Mr. Harvey in 1895, and the other by Mr. Bennett in 1896, 

 all of which are now in the Museum of the Survey. 



In the absence .of any knowledge of their muscular scars, these speci- 

 men« are only provisionally referred to the genus Capulus, on account of 

 their resemblance, in external form and surface markings, to the C. cassi- 

 darius and C. annulatus of Yokoyama, as 'described and figured in his 

 memoir on the fossils of the Cretaceous rocks of Japan.* The original 

 of figures 2 and 2a on Plate 45 of the present publication, which is the 

 most elevated of the three Comox fossils, is not at all unlike the speci- 

 men of C. cassidarius figured on Plate xviii, figure 10, of the thirty-sixth 

 volume of the Palseontographica, but in the latter the apex is not so much 

 incurved, and the surface is marked only with five annular striae of 

 growth. Another of the Comox specimens has much the same kind of 

 surface markings as C. annulatus, but in the latter the apex is erect, and 

 the annular wrinkles appear to be proportionately more numerous. 



On the other hand, these Comox specimens may prove to be the young 

 of a very large species of Helcion, recently discovered at Nanaimo, by Mr. 

 Harvey, which will be found described a little farther on in these pages 

 under the name H. giganteus, Schmidt, var. Vancouver ensis. The apex 

 of a very young specimen of the var. centralis of H. giganteus, figured by 

 Schmidt on Plate iii, figure 9, of his memoir on the fossils of the Chalk 

 formation of Saghalieu (Sachalin)t is very like that of the Comox speci- 



*Versteinerungen aus der Japanische Kreide, Palseontographica, Bd. xxxvi, p. 177, 

 pi. 18, figs. 10, a, h, 11, a, b ; and p. 200, pi. 25, figs. 17, a, b. 



fin the "Memoires de L'Academie Imperiale des Sciences de St.- Petersbourg," 

 vn'^ Serie, Tome xix, No. 3, pp. 1—37. 



