138 



Description of Plate XIII. 



Kjcrulfla lata nov. gen. & sp. Page 73. 



Fig. 1. (Nat. size). Negative impression of the rearmost segments and pygidium 

 (corresponding specimen to that of Plate XIII, fig. 3). We 

 see distinctly that the spines of the segments increase in 

 size backwards. The last segment almost broken off in middle. 

 Impression of pygidium imperfect. Holmia shales, Tomten. 

 Krist. Univ. Pal.' Mus. Cat. No. 13. XXVII. 1012. 



Fig. 2. (Nat.size). The posterior portion of cranidium and the first 9 segments 

 of a large, highly compressed specimen. Holmia shales, 

 Tomten. Krist. Univ. Pal. Mus. Cat. No. 13. XXVII. 894. 



Fig. 3. (Nat.size). The 7-8 rearmost segments and the pygidium with the 

 commencement of the rearmost thoracic spines well preser- 

 ved. Holmia shales. Tomten. Krist. Univ. Pal. Mus. Cat. 

 No. 13. XXVII. 416. 



