110 CANADIAN MICRO-PAL.EONTOLOGY. 



Family : Lithocampida. 

 Sub-family : Stichocapsida. 



Genus : Stichocapsa, Haeckel. 



15. Stichocapsa Tyrkelli, n. sp. 



Plate XVI-, tig. 4. 



Shell smooth, slender, pear shaped, twice as long as broad, with three 

 deep strictures. Relative lengths of the four joints 1 : 1 -.3 : 4 : 3, 

 Relative breadths 1 : 2:5: 5*5. Cephalis spherical, hyaline, without 

 pores. Thorax hemispherical, with four transverse rows of regular 

 circular pores. The fourth joint is the broadest, but is shorter than 

 the large campanulate third joint. Pores in the second, third and 

 fourth joints of equal size, and all about as wide as the bars. 



Dimensions : — Length of the shell, 0*296 mm. 



Breadth of the fourth joint, 0*194 •< 

 Occui-rence : not rai-e. 



16. Stichocapsa Dawsoni, n. sp. 



Plate XVJ., fig. 5. 



Shell smooth, irregular ovate, with three internal septal rings, with 

 out external strictures. The third joint is the largest, being more than 

 half as long as the shell. Relative lengths of the four joints 1 : 1:5: 1. 

 Relative breadths 1 : 2 : 4 : 3. Cephalis hemispherical, hyaline, with- 

 out pores. The second and fourth joints small, with three transverse 

 rows of regular circular pores. The third joint ovate, with truncated 

 poles, and from twelve to thirteen transverse rows of sub-regulai- circular 

 pores. 



Dimensions: — Length of the shell, 0*174 mm. 



Breadth of the third joint, 0*137 -• 

 Occurrence : not frequent. 



