1' LA TE I V. 



Fij.'. 1. Frotcscolex ORNATUS — An entire (?) specimen. Natural size, 

 la. Another specimen. Natural size. 



\b. A portion of the same enlarged to show the pai)illatecl segments. 

 Fig. 2. Protoscolex covingtonensis — A well preserved and nearly entire speci- 

 men. Natural size. 

 Fig. 3. Protoscolex tenuis — A small, entire specimen. Natural size. 

 Fig. 4. Protoscolex simplex — An entire specimen of the natural size. 

 Fig. 5. EOTROPHONIA SETIGBRA — A side view, showing the dorsal and lateral 

 series of setae. 

 5a. A view of the under side, showing only the lateral series of seta;, the dorsal 

 series being imbeded in the matrix. 

 Fig. 6. x\nomaloides RETICULATUS — A compressed conical fragment, now in the 

 cabinet of Dr. R. M. Byrnes. 

 6a. A fragment of the body, to which the rays, as represented in fig. 6, probably 



were attached. 

 66. Enlargement of some of the club-shaped plates. 

 Fig. 7. Ch.etetes venustus — Fragment. Natural size. In the cabinet of Prof. 

 J. W. Hall, Jr. 

 "a. Portion of the surface of same. Enlarged to six diameters. 

 Fig. 8. Callopora CINCINNATIENSIS — Terminal portion of a branch. Natural size. 



8a. Portion of the surface of same. Enlarged to eight diameters. 

 Fig. 9. Protesterina fimbriata — View of the ventral surface of a very well pre- 

 served specimen. 

 9a. A dorsal view of the same. 

 96. Portion of one of the rays, magnified to show the arrangement of the plates 



and position of the sub-conical plates within the pores. 

 9c. Enlargement of the mouth parts, showing the arrangement of the oral plates. 

 Fig. 10. DisciNA tenuistriata — A ventral vi^ve. Natural size. 

 Fig. 11. DisciXA SUI5LAMELLOSA — View of a dorsal valve of this species. Natural 



size. 

 Fig. 12. Crania I'ERCArinata — Dor.sal valve. 

 Fig. 13. Crania parallela — Dorsal valve. Natural size. 

 Fig. 14. Crania socialis — View of dorsal valve. 

 Fig. 15. Tiunucleus BELLULUS — A large and very i)erfect specimen. Enlarged to 



four dianxeters. 

 Fig. 16. PtilodictYA PERELEGANS — A fragment of a frond. Natural size. 

 1()«. .\ ))ortion of same enlarged to six ilianieters. 



