96 



BULLETIN 56, UNITED STATES NATIONAL MUSEUM. 



which has since entirely disappeared. "Waterfowl were abundant 

 along the San Bernardino River and on the marshy meadows and 

 pools below the springs. Archeological objects and rocks, plants, 

 mollusks, fishes, reptiles, batrachians, birds, and mammals were 

 collected. The writer was present at this station July G and 7, July 

 29 to September 11, 1892; August 17 to 24 and October 4 to 7, 1893. 

 Mr. Holzner, July 29 to September 11, 1892. 



Flora of San Bernardino River. — The principal trees and plants 

 found in this vicinity are given in the lists that follow. 



The trees arc : 



Juniperus monosperma ( Engelmann) 

 Sargent. 



Fraxinus velutina Torrey. 



Salix nigra Marshall. 



Salix occidentalis longipes (Andersson) 

 Bebh. 



Salix taxifolia Humboldt, Bonpland, 

 and Knntli. 



Platanus wrightii Watson. 



Yucca brevifolia Torrey. 



Morus celtidifolia Humboldt, Bon- 

 pland, and Knnth. 



Other conspicuous plants are: 



Ephedra sp. 



Scirpus olneyi Gray. 



Scirpus californicus (Meyer) Britton. 



Yucca baccata Torrey. 



Agave palmeri Engelmann. 



Atriplex sp. 



Argemone platyceras Link and Otto. 



Ribes aureum Pursh. 



Mimosa (several species). 



Cassia leptocarpa Bentbam. 



cassia wislizeni Gray. 



Fouguieria splendens Engelmann. 



Populus fremontii Watson. 

 Acacia constricta Bentham. 



Eyscuhardtia orthocarpa (Gray) Wat- 

 sou. 



Prosopis sp. 



Holacantha emoryi Gray. 



Acer negundo Linnaeus. 



Sapindus marginatus Willdenow. 



Bumelia rigida (Gray) Small. 



Ccliis reticulata Torrey. 



Chilopsis linearis (Cavanilles) Sweet. 



Nieotiana glauca Graham. 



Covillea tridentata (de Candolle) 



Vail. 

 h'lnts toxicodendron Linnaeus. 

 Rhus triloba ta Nuttall. 

 Cereus greggi Engelmann. 

 Opuntia (several species). 

 Baccharis glutinosa Persoon. 

 Perezia nana Gray. 

 Cucurbita foetidissima Humboldt, 



Bonpland. and Knnth. 

 Cucurbita digitata Gray. 



Station No 26. — Near the mouth of Cajon Bonito Creek. Sonora, 

 Mexico. Altitude. 975 meters (3,199 feet). Cajon Bonito Creek, a 

 terminal twig of the Yaqui River, debouches into the San Bernardino 

 River 10 miles south of Monument No. 77 of the Mexican Boundary. 

 The writer, acompanicd by Lieut. I). I). Gaillard, camped there from 

 August 31 to September 1. 1892, when driven out by the sudden flood- 

 ing of the valley, caused by a cloudburst at the head of the stream, in 

 the San Luis Mountains. I had experienced a similar occurrence in a 

 canyon at the head of the Cajon Bonito Creek, where Col. J. W. Bar- 

 low and myself were encamped at the beginning of the storm season. 



Station No. 27. — Niggerhead, Cerro Gallardo. Monument No. 82. 

 Altitude, 1,374 meters (4,508 feet). Distance from the Rio Grande, 



