132 



is placed with its aperture downwards, the canal is seen to be obiiquelj' 

 recnrved, and its previous position is indicated by an oblique groove, 

 bounded above b}- a raised, rounded ridge, both of which lake their rise 

 from the outer margin of the columella, a little below the middle of the 

 aperture. The groove leads directly into the channel, while the ridge, 

 which bounds both on one side, tei-minates at the base of the outer lip. 



The surface is marked by squarely cut, revolving grooves, and by 

 minute, crowded, transverse striations. On the body whorl there are 

 about fourteen or fifteen spiral grooves, those in the central portion being 

 about as wide as the interspaces, while those near the suture above and base 

 below ai-e almost invariably wider than the spaces between them. 



Productive Coal Measures, Division A., of the Sucia Islands; J. Eich- 

 ardson, 1875. A nearly perfect specimen in verj' good condition. The 

 apex is broken otf, so that it is impossible to say whether the spire was 

 obtuse or abruptly acuminate, but there can be no doubt that it was 

 ftXtremeiy short. 



Haminea Horni, Gaub? var. 



Plate 16, figures 8, 8a and 8b. 

 Bulla ffornii, Gabb.— Pal. Cal., Vol.L, p. 143, pi. 29, fig. 235. 



Middle Shales, Division D, of the north-west side of Hornby Island. 

 Lower Shales, Division B, of the south-west side of Denman Island. 

 Productive Coal Measures, or Division A, at Blunden Point, and two 

 miles and a quarter up the Nanaimo Eiver, Y. I., also at Vesuvius Bay, 

 Admiralty Island, and at the Sucia Islands. J. Richardson, 18*72-'75. 



Fifteen or sixteen well preserved specimens of a small species of 

 Haminea, which seem to possess essentially the same characters as the 

 Tejon fossil described by Mr. Gabb as Bulla HorniL In addition to 

 the " very fine, impressed, revolving lines" liy which the surface of 

 that shell is said to be marked, the test of the best specimens collected by 

 Mr. Richardson is densely and very finely striated transveivsely, and the 

 ■cnpressed lines, under a simple lens, are seen to consist of continuous, 

 rounded punctures. When still more highly magnified the lines appear 

 to be regularly crenate on both sides, as shown in the figure. 



The length of the largest specimen is not more than four lines. 



