Geol.— Vol. II.] ANDERSON— CRETACEOUS DEPOSITS. 75 



Gabb appears to have seen this species in the Chico beds 

 of California, but did not distinguish it from M. ashburneri 

 Gabb. 



Occurrence. — This species occurs in the Lower Chico 

 beds of Henley and Willow Creek, in Siskiyou County, 

 and in the Santa Ana and Temescal mountains of Los 

 Angeles and Riverside counties, in California. 



GASTEROPODA 



8. Haliotis lomaensis, sp. nov. 



Pl.\te IX, Fig. 183. 



Shell small, length 1.3 cm., oval, the two lateral margins nearly equally 

 curved; convex, the back angled at the row of perforations; spire low, indis- 

 tinct, not terminal; lips continuous around the spire end, expanded along 

 both sides, forming a thin margin; muscle-impression central, oval, slightly 

 roughened; perforations four, preceded by a slight marginal notch, and pro- 

 duced ridge behind; surface marked by concentric lines extending around 

 the entire body-whorl near the margin; radial lines also seen; convexity of 

 shell about one-fourth the length ; width five-sixths the length. 



This shell appears to resemble in many respects Tryon's 

 group of H. iris. 



Occurrence, — The type of this interesting species, which 

 is in the collections of the State Mining Bureau, San Fran- 

 cisco, was obtained by H. W. Fairbanks from the Lower 

 Chico of San Diego County, California. A single speci- 

 men was found in the beds at Point Loma, associated with 

 Pecten californicus, Actceonina pic^oides, and Upper Chico 

 forms; but below the beds contain Coralliochama orcutti, 

 according to the statements of Dr. Fairbanks. It is doubt- 

 less the oldest Haliotis known, being somewhat lower in 

 position than the //. antiqua Bink. of the Maestricht beds. 



9. Erato veraghoorensis (?) Stol. 

 Plate IX, Figs. iSi and 182. 



Erato (?) veraghoorensis Stol., Paleont. Ind., Vol. II, p. 59, PI. IV, fig. 

 14, etc. 

 Shell ovate, more inflated posteriorly; spire low though distinct, about 

 one-eighth of the entire length of the shell; outer lips thickened and reflexed, 



