Xll ILLUSTRATIONS. 



Plate. Page. 



X. Section of strata near the head of Red river, taken June 28 169 



XL Section of cliffs on Cache creek - - - - - 171 

 PALEONTOLOGY.* 



I. Fig. 1 a. Productus cora,'D'Orb. - - - - -176 



Fig. 2. Productus costatus, Sow. - - - - -176 



Fig. 3. Spirifer, indet. - 177 



Fig. 4. a. b. Terebratula marcyi, Shum. - - - - 177 



Fig. 5. Productus punctatus, Martin - - - - 175 



Fig. 6. Archimedipora archimedes, Les. - 175 



Fig. 7. Agassizocrinus dactyliformis, Troost - - - 173 



TI. Fig. 1. Productus punctatus, Martin - - - - 175 



Fig. 2 a. b. Pecten quadricostatus, Sow. - - - - 178 



Fig. 3 a. b. Terebratula choctawensis, Shum. - - - 181 



Fig. 4. a. b. c. Herniaster elegans, Shum. - 184 



III. Fig. 1. Ammonites acuto-carinatus, Shum. - - - 183 

 Fig. 2. Holaster simplex, Shum. . - - - - - 184 



Fig. 3. Astarte washitensis, Shum. - - - - -180 



Fig. 4. Ammonites, indet. - - - - - -184 



Fig. 5. Exogyra texana, Roem. - - - - -179 



Fig. 6. Pecten quadricostatus, Sow. ... - 1Y8 



IV. Fig. 1. Trigonia crenulata, Lam. - - - - - 180 

 Fig. 2. Cardium multistriatum, Shum. - 181 

 Fig. 3. Eulima subfusiformis, Shum. - 182 

 Fig. 4. Globiconcha elevata, Shum. - - - - 182 

 Fig. 5. Ammonites marcianus, Shum. - - - - 183 

 Fig. 6. Pileopsis ; not mentioned in the text - 



Fig. 7. Holectypus planatus, Roem. ... - X85 



Fig. 8. Terebratula subtilita, Hall - - - - - 176 



V. Fig. 1 a. b. Exogyra texana, Roem. - - - - 179 



Fig. 2. Ostrea subovata, Shum. ----- 1V9 



* Owing to the impossibility of communicating with Dr. Shum ard during the 

 priming and engraving of the present report, I have been unable to fill up the 

 gaps in the above list of figures made up from the references in the article on 

 palaeontology. This want of supervision on the, part of the author will also ex- 

 plain the existence of sundry discrepancies between text and plates. 



R. B. M. 



