1922 1 Packard: New Species from Santa Ana Mountains 415 



THE CRETACEOUS FAUNA OF THE SANTA ANA 

 MOUNTAINS 



The fauna obtained from the Cretaceous of the Santa Ana Moun- 

 tains includes aproximately 136 forms : 62 determined species and 

 varieties of pelecypods, 22 of gastropods, 1 scaphopod, 3 cephalopods, 

 and 2 echinoderms, besides 45 undetermined forms belonging to those 

 groups and to the Molluscoidea, Vermes, Arthropoda, and Vertebrata. 

 To this number we may add 17 more that have been reported from 

 this region by other workers. 



univ. DESCRIPTION OF LOCALITIES 



Calif. 

 Loc. 



2130 Four miles SE of B. M. 1271, Corona sheet. About % mile north of 

 Joplin's house on the west side of the canon. Elevation 2200 feet. 



2134 One mile N 45° E of B. M. 1271, Corona sheet. On crest above the reser- 



voir in Harding Canon. Elevation 1850 feet. 



2135 One-quarter mile N 15° E of B. M. 1271, Corona sheet. In a small gully 



on the right side of Santiago Canon. Elevation 1300 feet. 



2136 Two miles N 38° E of B. M. 1271, Corona sheet. Near crest of ridge 



nearly north of fork of road in the canon. 

 2138 About one-half mile NNE of B. M. 1271, Corona sheet. Eight bank of 

 Williams Creek, about 100 feet above Modjeska Springs (Mr. Burson 's 

 house). Just above basal conglomerate. 



2141 Two and three-quarters miles N 6° W of B. M. 1271, Corona sheet. Left 



side of Silverado Canon, in sandstone just above the basal gray con- 

 glomerate. Elevation 1200 feet. 



2142 Two and one-quarter miles NNW of B. M. 1271, Corona sheet. Left side 



of Silverado Canon, in shales undercut by the stream about 200 feet 

 southeast of the road. 



2143 Two and five-eighths miles N 10° W of B. M. 1271, Corona sheet. East 



side of Silverado Cafion, opposite the first house below the narrows in 

 the canon. Elevation 1200 feet. 



2144 Three and one-quarter miles N 9° W of B. M. 1271, Corona sheet. East 



side of first north canon from the house near the basal conglomerate 

 in Santiago Canon. Just below the lower Chico shales. Elevation 

 1400 feet. 



2149 One and five-eighths miles S 70° E of B. M. 610, Corona sheet. On ridge 

 between Santiago and Sierra canons. Elevation 1100 feet. 



2151 One-half mile N of B. M. 1271, Corona sheet. Eidge southeast of the 

 canon occupied by a road. Specimens possibly from a piece of Chico 

 float. Elevation 1600 feet. 



2155 Three and three-eights miles S 65° E of B. M. 610, Corona sheet. One- 

 half mile from mouth of Black Star Cafion. Chico float. 



