PLATE XXVI 



PAGE 



Fig. 1-9. DOLICHOMETOPUS n. sp 338 



1. A cranidium slightly elongated by pressure from direction indicated 



by arrow. X 3. 



2. A similar but less distorted cranidium. X 3. 



3. Rock fragment with cranidium of nearly normal shape. X 3. 



4. A large cranidium of the same species. Lateral pressure has 



narrowed the head. X 1.5. 



5. A small pygidium of normal shape. X 1.5. 



6. A large pygidium of apparently the same species, slightly distorted. 



X 1.5. 



7. Very small undistorted cranidium. X 3. 



8. Two cranidia of normal size. The upper head is slightly shortened 



while the lower one is laterally compressed by pressure from 

 the direction of the arrow, making it appear elongate. X 3. 



9. Three well preserved cranidia with arrow showing direction of 



pressure. The upper left hand specimen is of another species 

 with broader fixed cheeks. The upper of the two speci- 

 mens on the right is shortened obliquely, the lower one antero- 

 posteriorly. X 3. 



Cambrian. Elbrook limestone (20 feet above base). Small 

 quarry on eastern outskirts of Waynesboro, Pennsylvania. 



376 



