BIH 



ANG TILL K. SV. VET.-AKAU. HANDL, BAND. 7. N:0 5. 15 



0,2 9 mm. Tliis form differs from the preceding mainly in the 

 more prominent lateral projection and the tapering of the 

 po.sterior end of the plate. The Gotland examples are all 

 smalle^ than the type form from the Cincinnati series at 

 Toronto. 



Locality. Wisby. 



(Enonites pai^Tulus, n. Plate 2, tig. 33. 



Jaw elongate; narrow, compressed, the anterior margin 

 has a pointed conical tooth nearly in the same plane with the 

 jaw-plate ; the outer lateral margin is sligthly cvirved, the 

 inner or free margin is straight and has about 14 denticles. 

 The posterior end is obtuse. The vmder surface next the 

 jaw-sac has a long open furrow. Length0,49; width 0,1 mm 

 A rare form. 



Locality. Wisby. 



(Enonites radula, n. Plate 2, figs. 34, 34 a. 



Jaw plate triangulär in outline, the upper surface slightly 

 concave, the upper portion of the outcr margin is curved and 

 extends forwards in a conical pointed tooth, which is bent 

 inwards. The centre of the outer margin is acutely pointed, 

 from this to the pointed extremity the margin is straight. 

 The free margin is nearly straight, and has a series of 12 

 to 14 minute conical denticles. The Linder surface has a deep 

 open hollow extending for nearly two-thirds of its length. 

 An average specimen is 0,8 1 mm. long, and 0,38 wide. The 

 triangulär form of the plate readily distinguishes this from 

 any of the preceding 'forms. The examples are not uncommon. 



Variety cristula. Plate 2, fig. 35. 



This differs from the preceding in possessing a projec- 

 ting flange in the lower half of the jaw and the denticles 

 spring from the edge of a low vertical crest. Its proportions 

 are similar to the preceding. 



Locality. Wisby and Fröjel. 



(Euonites securis, n. Plate 2, fig. 36. 



Jaw plate roughly triangulär in outline, the upper sur- 

 face is nearly plane, the front portion is curved and con- 

 tinued into an upward projecting shank; the anterior tooth 

 curved; the free margin has a series of 10 to 14 minute 

 conical denticles; atthe posterior extremity it is slightly curved 



