514 



PROCEEDINGS OF THE ACADEMY OF 



[Dec. 



little irregular, and in bands in jaws. Vomerine teeth smaller, in an 

 obtuse-shaped patch, and a narrow band on each palatine. Tongue 

 rather thick, broad, rounded, and well free. A patch of small asperi- 

 ties on tongue. Interorbital space a little convex. A rather tren- 

 chant keel from occiput to origin of spinous dorsal. Gill-opening for- 

 ward opposite front rim of pupil. Rakers iv, 1 + 6, vii, large, robust, 

 and a little longer than filaments. Scales small and crowded on occi- 





Fig, 



2. — Ambloplites rupestris cavifrons (Cope). 

 Cope.) 



(Type of Ambloplites cavifrons 



put, predorsal region and thorax. Vent a little nearer tip of ventral 

 spine than origin of spinous anal. In alcohol dull brown, more or less 

 uniform on head and trunk, and fins paler. Faint traces of horizontal 

 streaks following in series of scales. Very indistinct clouded mottlings 

 on vertical fins. A brownish opercular spot. Iris dull brassy-silvery. 

 Length 3 inches. Type. 



Archoplites interruptus (Girard). 



Centrarchus interruptus Girard, Proc. Acad. Nat. Sci. Pliila., 1854, p. 129. 

 CotjHpes, Nos. 13,430 (type) to 13,433, A. N. S. P. Sacramento River, 

 Cal. Dr. A. L. Heermann. Coll. Smiths. Inst. 



Another from same locality (U. S. F. Com.); San Joaquin River, 

 Cal. (Dr. Newberry). 



