342 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. , 



Family INACHID.E. 



LOXORHYNCHUS GRANDIS Stimpson. 



Plate XLV; Plate XLVI ; Pinto XLVII, fig. 1. 



Loxorynchus grandis Stimpson. Proc. Boston Soc. Nat. Hist., VI, 1S57, p. 85. 

 Loxorhynchus grandis Stimpson, Jour. Boston Soc. Nat. Hist.. VT, ISHT, i>. 

 452, pi. xx, fig. 1; pi. xxii, fig. 1. 



One specimen, adult female, without appendages except a portion 

 of the coxal joints of some of the legs. Cat. No. 165476, U.S.N.M. ; 

 U. S. Geological Survey Locality No. 4783. 



This crab occurs in a rather hard, coarse blue-gray sandstone layer 

 about 12.") feet stratigraphically below the top of the Etchegoin for- 

 mation (Upper Miocene) on Canoas Creek, three-fourths of a mile 

 below Hugo Kreyenhagen's ranch house, 1G miles southeast of Coal- j 

 inga, Fresno County, California. 



The specimen is apparently of the same species as the recent L. 

 grandis. The spines of the carapace, the form of the buccal cavity 

 and the abdomen correspond to the same parts in L. grandis. The 

 rostral and orbital region is lacking. 



Measurements. — Greatest width of carapace 03 mm., width at 

 hepatic regions 58.5 mm. 



Present distribution. — From the Farallone Islands and San Fran- 

 cisco to San Diego, in 6^ to G8 fathoms. Uncommon. 



Only one other species of the genus is known, L. crispatus Stimp- 

 son," which has almost the same marine distribution as the above, but 

 has not been recorded in a fossil state. 



No other fossils were found in the immediate bed with L. grandis, 

 but overlying it about 25 feet was a bed containing Ostrea lurida Car- 

 penter, while in beds equivalent to those 300-350 feet below it are 

 found the following species: 



List Of fossils from upper Etchegoin formation (Miocene), Zapata Creek, 1.1 

 miles southeast of Coalinga, California. 



ECHINOIDEA. 



Astrodapsis perrini Merriam. Scutella breweriana Remond. 



Echinarachnius gibbsii Remond. 



BRACHIOPODA. 



Terebratalia occidentalis Dall. 



PELECYPODA. 



Area trilineata Conrad. Pecten nutteri Arnold. 



Chama pellucida Sowerby. Pecten wattsi Arnold. 



[lacoma nasuta Conrad. Saxidomus uracil is Could. 

 Pecten coalingaensis Arnold. 



GASTEROPODA. 



\assa calif orninna Conrad. Xercrita reeluziana Petit. 



"Jonr. Boston Soc. Nat. Hist., VI, ISf.7, p. 4. r ,.",. pi. xxn, tigs. 2-4. 



