100 



Nautilus which appears to be identical with N. Dekayi, Morton," occurs 

 in "the dark, argillaceous, compact limestone of Nanaimo River, 

 Vancouver Island," associated with Inoceramus Vancouver ensis and other 

 Cretaceous fossils. Imperfect or badi}^ preserved specimens of Nautilus 

 Campbelli are difficult to distinguish fi'om jS\ Dekayi, and as Dr. Shumard 

 states that his fossil was in bad condition, it is quite likely that the 

 A^autilus which he supposed might be N. Dekayi was really N. Campbelli, 

 especially when it is borne in mind that the latter species was not 

 described b}' Meek until 1861, four years after the publication of Dr. 

 Shumard's paper. However this may be, the existence of Nautilus 

 Dekayi in the Vancouver Cretaceous is not very satisfactorily established, 

 and needs confirmation. It has not yet been recorded from rocks of 

 similar age in Caliiornia.) 



(Heterocebas Cooperi, G-abb. (Sp.) 



Ammonites (?) Cooperi, Gabb. — Palaeontology of California, Vol. I., p. 69, pi. 14, figs. 



£2 and 23a. 

 Ileterocerai Cooperi, Meek. — Bui. Geol. and Geogr. Surv. of Terr., Vol. II., No. 4, 



p. 367, pi. 3, figs. 7 and 7a. 



Comox, Vancouver Island. Meek. Not in any of Mr. Richardson's 

 collections.) 



Heteroceras Conradi, Morton. (Sp.) 



Plate 12, all the figures. 



Ammonceratitet Conradi, S. G. Morton. — Jour. Ac. Nat. Sc, Phil., 1839, Vol. VIII., p. 212, 



pi. 10, fig. 1. 



More or less fi-agmentary specimens of a large Heteroceras were 

 collected by Mr. Richardson, from the Middle Shales, or Division D., of 

 the North- West side of Hoi-nby Island (one) in 1872; from the Lower 

 Shales, or Division B., of the Trent River (two from above and one from 

 below the falls), and at Bradley Creek, V. I., in 1872 ; also from the 

 Productive Coal Measures, Division A., of Salt Spring or Admiralty 

 Island (two), and at Maple Bay, V. I. (five), in 1875. 



The most perfect are those from the last mentioned localitj^, three of 

 which are represented on plate 12. The original of figs. 1 and la in that 

 plate has an entire whorl and a considerable portion of the two pi'eceding 

 'Ones preserved in place, also a detached ])iece of the uncoiled part of the 

 ^hell, which was found lying immediately acjp^is its umbilical opening 



