EXPLANATION OF PLATES 241 



Plate 35. — Crustacean Remains from Grayson Shales 

 Beltina danai 



Figure 1. — Specimen which appears to represent the head. Figure 2 is greatly 

 compressed and distorted in front and probably belongs to another 

 species. Natural size. 



FiGUKE 3. — A segment of the body. 



FiGURic 4. — Portion of an appendage with four joints indicated. Magnified 3 times. 



FiGuitE 5. — An unidentified fragment with a small terminal curved spine. Magni- 

 fied 4 times. 



Figure 6. — .An appendage with two large basal? joints and two smaller terminal 

 joints. Magnified 2 times. . 



Figure 7. — Appendages with a large basal ? joint and four smaller joints indicated. 

 Natural size. 



Figure 8. — Appendage with very large basal ? joint and several small joints. 



Figure 9. — Appendage with fragment of large basal ? joint and several small joints. 



Figure 10. — Two appendages that are apparently attached to a single basal ? joint. 



Figure 11. — Appendage with a broad basal ? joint. 



Figure 12. — Appendage with a broad basal ? joint. Several fine setfe or spines are 

 attached to it. Magnified 3 times. 



Figure 13. — Movable ramus of a chelate appendage, with traces of teeth. 



Figure 14. — Broken fixed portion of a chelate appendage, with traces of teeth. 



Figure 15. — Several specimens of this character occur in the collection. 



Figure 16. — Jointed apjDendages very much compressed and distorted. 



Figure 17.- — Jointed appendage. 



Figure 18. — Telson preserving a central ridge. 



