Plate 4 



Page 

 Figs. 1-14. Telephus bicornis, new species 23 



I, 2. Anterior and dorsal views of a free cheek, X 4. The 

 latter shows the shorter spine behind the longer one which 

 is regarded as the real genal spine. U.S.N.M. No. 

 80535a. 



3. Dorsal view of rather small cranidium, X 3. U.S.N.M. 

 No. 805356. 



4. Side view of a larger cranidium, X 3. U.S.N.M. No. 

 80535c. 



5. Dorsal view of an imperfect cranidium with occipital 

 spine complete, X 3. U.S.N.M. No. 80535d. 



6. Large cranidium somewhat crushed in right anterior 

 third, X 3. U.S.N.M. No. 80535e. 



7. Nearly complete but small cranidium, X 3. U.S.N.M. 

 No. 80535/. 



8. Another cranidium, X 3. U.S.N.M. No. 80535^. 



9. Still another cranidium that retains about half of one of 

 the glabellar spines, X 3. The specimen was tilted in 

 photographing so as to show the full length of the remain- 

 ing part of the right spine. U.S.N.M. No. 80535/i. 



10. Anterior view, X 4, of the specimen shown in Figure 7. 



II. An associated hypostoma supposed to belong to this 

 species, X 3. U.S.N.M. No. 80535z. 



12-13. Respectively dorsal and side views of the associated 

 pygidium, X 3. U.S.N.M. No. 80535j. 



14. One of the thoracic segments, X 3. U.S.N.M. No. 

 80535&. All these specimens are regarded as cotypes of 

 the species, and all were collected from a single ledge of 

 Whitesburg limestone, 5 miles southwest of Bland, Va. 



93 



