64 REPORT OF ASSISTANT SECRETARY. 



3. Exploration of the San Juan river and Upper Colorado, under 

 Captain J. N. Macomb, U. S. A. — This party, accompanied by Dr. 

 Newberry as geologist and naturalist, did not get into the field until 

 a late period in the summer, and returned before winter to the east. 

 The principal results of the expedition, independently of interesting 

 geographical discoveries, are to be found in the department of geology, 

 in which Dr. Newberry was enabled to extend his observations made 

 while on the Colorado expedition under Lieut. Ives. Among other 

 fossils, Dr. Newberry obtained remains of a new genus and species 

 of extinct lizard, larger than any formerly found in North America. 



4. Explorations with the army in Utah, under Captain Simpson, 

 U. S. A. — This party, under Captain Simpson, accompanied by Mr. 

 Charles S. McCarthy as collector, left Fort Leavenworth for Camp 

 Floyd, in May, 1858, reaching its destination in September. From 

 this time until March, 1859, the party was occupied in making roads 

 between Camp Floyd and Fort Bridger, and in marking reservations. 

 From May to August, 1859, Captain Simpson explored two wagon 

 road routes between Camp Floyd and Genoa, in Carson valley, which 

 shorten very much the distance from Salt Lake City to California. 



As much of this region had never been before traversed by scien- 

 tific men, the results were very interesting, consisting of several new 

 and peculiar forms of fishes, as also of reptiles, insects, &c. Many 

 rare birds, with their eggs, were also procured. 



The party left Camp Floyd for Leavenworth in August, by way of 

 the Timpanogos, the Uintah mountains and the valley of the Green 

 river. 



In addition to large zoological collections made by Mr. McCarthy, 

 Mr. Engelmann, the geologist of the expedition, made some important 

 geological discoveries, and brought in many fossils and plants. 



UNDER THE STATE DEPARTMENT. 



5. Survey of the northwest boundary : Archibald Campbell, esq., com- 

 missioner. — This expedition, with Dr. Kennerlyas the surgeon and nat- 

 uralist, and Mr. George Gibbs as geologist, has already been referred 

 to in previous reports. These gentlemen have continued to make 

 large collections during the year, those received filling twelve boxes. 

 The specimens gathered about the Chiloweyuck depot proved parti- 

 cularly interesting, from including a new salmon, Anodonta, and other 

 species of animals. The collections also embrace skins and skulls of 

 the Aploceras montanus, or Rocky mountain goat, the only ones known 

 in American collections; also of Lagomys princeps, or little chief hare, 

 and skins of Lagopv.s leucurus, the white-tailed ptarmigan, and of the 

 black-throated diver. Colymbus arcticus, in adult summer dress. 



UNDER THE NAVY DEPARTMENT. 



6. Exploration of the Parana and its tributaries, under Captain 

 T. J. Page, U. S. N. — This survey, in continuation of that prosecuted 



