368 



" Surface marked with narrow but comparatively distant spiral ridges, 

 which are crossed by very numerous, close-set and regularly arranged, 

 acute, longitudinal, thread-like raised lines. On the dorsal portion of the 

 last volution of the spire there are three of these spiral ridges, and upon 

 that of the outer volution about seven. Test thin, its inner layer dis- 

 tinctly nacreous. 



"The exact dimensions cannot be given, but an average specimen is 

 estimated to have been eleven millimetres and a-half in length, and nine 

 in maximum breadth, when perfect. 



" North-M'est side of Hornby Island, W. Harvey, 1894: four or five 

 crushed specimens. 



" This interesting little shell is referred to the genus Ennema, mainly 

 on the authority of Zittel,* who states that Amherleya, Morris and 

 Lycett, and Eucychts, Deslongchamps, ai^e synonymous with it, and that 

 it ranges in time from the ' Lower Silurian ' into the Cretaceous." 



Three additional examples of this species were obtained at Hornby 

 Island, by Mr. Harvey, in 1895, but these throw no additional light on 

 its characters. 



Margarita ornatissima, Gabb. (Sp.) 



Angaria ornatissiriut, Gabb. 18fi4. Geol. Surv. Calif., Palieont., vol. i, p. 121, pi. 20 



fig. 78. 

 Margarita ornatissima, Whiteaves. 1879. This volume, pt. 2, p. 128. 



White. 1889. Bull. U. S. Geol. Surv., No. 51, p. 45. 



A few additional specimens of this shell were collected at the Sucia 

 IsUnds, by Dr. Newcombe, in 1894 or 1896 ; and at Yorke's Farm, two 

 miles and a quarter to two miles and a half up the Nanaimo River, by 

 Mr. Harvey in 1901. 



Solariella (radiatula'? var.) occidentalis. 



Plate 45, figs. 5, and 5 a. 



Solariella radiatula (Forbes) Schmidt. 1873. Uber die Petref. der Kreide-form. von 

 Sachalin, in Mem. I'Acad. Imper. des Sciences de St. Peter.s- 

 bourg, Series vii, vol. XIX, p. 18, pi. 4, figs, 3, 4 and 5. 



Shell essentially similar to S. radiatula, as described and figured by 

 Dr. Schmidt in the memoir cited, but with the upper part of the later 

 volutions, especially that of the outer one, much more distinctly flattened 

 downward next to the suture ; or, in other words, more step-shaped 

 above. 



*Handbuch der Palseontologie, vol. ii, 1884, p. 189. 



