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, 

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

 collected. The writer was present at this station July 6 and 1, 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 are : 



Juniperns monosperma (Engelmann) 

 Sargent. 



Fraxinus velutina Torrey. 



Salix nigra Marshall. 



Salix occidentalis longipes (Andersson) 

 Bebb. 



Salix taxifolia Humboldt, Bonpland, 

 and Kunth. 



Platanus wrigMii Watson. 



Yucca brevifolia Torrey. 



Moms celtidifoUa Humboldt, Bon- 

 pland, and Kunth. 



Other conspicuous plants are: 



Ephedra sp. 



Scirpus olneyi Gray. 



Scirpus calif ornicus (Meyer) Brltton. 



Yucca baccata Torrey. 



Agave palmeri Engelmann. 



Atriplex sp. 



Argemone platyceras Link and Otto. 



Ribes aureum Pursh. 



Mimosa (several species). 



Cassia leptocarpa Bentham. 



Cassia wislizeni Gray. 



Fougvieria splendens Engelmann. 



Populus fremontii Watson. 

 Acacia eonstricta Bentham. 

 Eysenhardtia orthocarpa (Gray) Wat- 

 son. 

 Prosopis sp. 



Holacantha emoryi Gray. 

 Acer negundo Linnseus. 

 Sapindus marginatus Willdenow. 

 Bumelia rigida (Gray) Small. 

 Celtis reticulata Torrey. 

 Chilopsis linearis (Cavanilles) Sweet. 

 Wicotiana glauca Graham. 



Covillea trident ata (de Candolle) 



Vail. 

 Rhus toxicodendron Linnseus. 

 Rhus trilohata Nuttall. 

 Cereus greggi Engelmann. 

 Opuntia (several species). 

 Baccharis glutinosa Persoon. 

 Perezia nana Gray. 

 Cucurbita fwtidissima Humboldt, 



Bonpland, and Kunth. 

 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, acompanied by Lieut. D. D. 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, m 

 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, 



