38 PALAEONTOLOGY OF CALIFOENIA. 



tliat they are in contact; ambulacra? broad, bearing numerous 

 small, very slender spines. 



Fig. 67, a view of an average sized ray, natural size. 



Locality and position : Found abundantly at "Star Fish Point," on the Pinole 

 Ranch, south of the Straits of Carquinez, about five miles from Martinez; 

 Miocene. 



This species was first discovered by M. Eemond, and is the only fossil star fish 

 yet found in California. At tbe one locality above it is very abundant, but has 

 never been found elsewhere. It resembles, in its general appearance, A. oehracea, 

 Brandt, but the rays are more slender, it wants entirely the reticulated disposition 

 of the spines; on the upper surface, the spines are larger, of a different form, and 

 much more numerous. I have not seen a specimen retaining the disk and a whole 

 ray so as to show the exact proportion of the two to each other; but by a compa- 

 rison of a large series, the relative sizes of the parts given above seem to be, at 

 least, very nearlv correct. 



