Vol. 5] Jordan. — The Fossil Fishes of California. 



131 



Family CYPRINIDJE. 



Genus Mylopharodon Ayres. 



38. Mylopharodon conoccphalus (Baird and Girard). 



From Quaternary deposits in the Potter Creek Cave in Shasta 

 County, Mr. William J. Sinclair obtained various animal remains, 

 described in University of California Publications, American 

 Archaeology and Ethnology, Vol. 2, No. 1, 1904. Among these 

 are pharyngeal bones of three fishes. Among these are Mylopha- 

 rodon conocephalus, a large chub now found in the Sacramento 

 River. 



Genus Ptychochelius (Agassiz). 



39. PtycEocheilus grandis (Ayres) ? 



Pharyngeals doubtfully referred to this species were taken in 

 the Potter Creek Cave. This species is the common Squaw-fish of 

 the Sacramento. See op. cit., p. 18. 



Family ATHERINID.E. 



40. Merriamella doryssa Jordan, new genus and species. 



Head, 3-J in length ; depth, 6 ; D., I, I, 8 ; A., I, 7 ; G, 12 to 14 ; 

 P., 11 or 12 ; vertebra;, 15 + 18 = 33. 



Body moderately elongate, formed as in Atherina; the head 

 larger and more pointed; mouth rather oblique, the lower jaw 

 prominent, the maxillary apparently extending beyond front of 

 eye ; no signs of teeth ; eye large, the orbit about three in head ; 

 opercles apparently unarmed, the opercle convex and striated ; 

 orbital region elevated, the profile depressed over the snout ; 

 branchiostegals slender, about six in number; pectoral fin in- 

 serted high, fan-shaped, the form apparently symmetrical, its 

 length 2% in head ; no distinct traces of ventral fins on any of 

 the four specimens. 



First dorsal composed of a single moderate curved spine, 

 sharply defined in all examples, inserted behind middle of length 

 of pectoral at a distance from gill opening equal to two-thirds of 

 head ; length of dorsal spine about five in head. Soft dorsal en- 



