12 LIST OF ILLUSTRATIONS. 



REPTILES. 

 Siredoin Lichenoides, Plate I 

 Cnemidophorus Tigris, Plate II. 

 Crotaphytus Wislizenii, Plate III. 



Elgaria ScincicauJa — Plestiodon Skeltonianum, Plate IV. 

 Sceloporus Graciosus — Uta Stansburiana, Plate V. 

 Holbrookia Maculata — Phrynosoma Modesta, Plate VI. 

 Phrynosoma Platyrhinos — Phrynosoma Douglassii, Plate VII. 

 Phrynosoma Cornuta — Phrynosoma Coronata, Plate VIII. 



INSECTS. 



Labidus Saji — L. Harrisii — L. Melshajmeri — Euphoria Cernii — Cotalpa Grani- 

 collis — Henous Techanus — Megaderus Corallifer — Cicada Striatipes — C. Rex., 

 Plate IX. 



Zaitha Bifoveata — OEdipoda Corallipes — Ephippiger Trivavensis — Anabrus Sim- 

 plex, Plate X. 



PLANTS. 



Strepanthus Crassicaulis, Plate I. 

 Phaca Mollissima, Plate II. 

 Cowania Stansburiana, Plate III. 

 Spiraea Dumosa, Plate IV. 

 Heuchera Rubescens, Plate V. 

 Chenactis Achillesefolia, Plate VI. 

 Monothrix Stansburiana, Plate VII. 

 Crepis Acuminata, Plate VIII. 

 Amblirion Pudicum, Plate IX. 



PALEONTOLOGY. 



CORALS — CTATHOPHYLLIDA^. 



Faviphyllum? rugosum, (n. sp.) F. multilamella. F. Stansburii — Lithostrontion 

 — (sp. indet.), Plate I. 



BRACHIOPODA. 



Terrebratula subtilita — Spirifer hemiplicata. S. octoplicata — S. triplicata, Plate 



II. 

 Chonetes variolata — Productus costatus — P. semireticulatus. P. — (sp. indet.) 



Orthis umbraculum ? Plate III. 



ACEPHALA. 



Avicula ? custa. Tellenomya protensa — Cypricardia occidentalis. AUorisma ter- 

 minalis, (n. sp.) — Nucula arata, (n. sp.) 



GASTEROPODA. 



Pleurotomaria coronula, (n. sp.) Euomphalus subplanus, Plate IV. 

 Map of the Great Salt Lake, and adjacent country. 



Map of the Reconnoissance of the Country between the Valley of the Great Salt 

 Lake and the Missouri River, at Fort Leavenworth. 



