TRANSACTIONS OF WAGNER 

 704 



TERTIARY FAUNA OF FLORIDA 



young of P. cstrellanum (= Heeriiianni Conr.) by Dr. Cooper. It is small, 

 with feeble sculpture like a young, pressed-out Pccten propatulus, with eighteen 

 to twenty major ribs alternated with smaller intercalary riblets. The ears are 

 discrepant, the right anterior one radially ribbed. The shell measured about 

 thirty millimetres in height and length. 



Pecten (Pecten) bellus Conrad. 

 Janira bella Conrad, Pac. R. R. Rep., vi., p. 71, pi. 3, fig. 16, 1857. 

 "Hot Janira bella Gabb, Pal. Cal., ii., p. 105, pi. 16, fig. 20, 1S68. 

 Not Pecten belhis Sby. {itbi ?), nor P. bellis McCoy. 



Tertiary of Santa Barbara, California. 



Neither the description nor the figure are sufficient to positively identify 

 this shell, of which no authentic specimen is known. Such information as is 

 given does not agree with either of the recognized species. 



Pecten (Chlamys) fucanus n. s. 

 Plate 26, Figure 7. 



Found in concretions from the Miocene sandstones of Clallam Bay, 

 twenty-five miles eastward from Cape Flattery, on the south shore of Fuca 

 Strait, Washington, by Mr. J. S. Diller, of the United States Geological 

 Survey. Another specimen was received from J. G. Swan, collected in the 

 same vicinity. 



This is a rather large species of the type of P. Plindsil var. stratcgits, 

 both valves moderately convex and with a fine subsidiary surface tessellation ; 

 sixteen squarish ribs, of which the median one in the left valve is stronger 

 than the rest and surmounted by prominent imbricated scales ; the others are 

 simply radially striated, as are the interspaces, which carry a mesial elevated 

 thread ; the submargins are radially threaded, as are the subequal ears, which 

 also bear marked concentric lamellse; the resilial pit is of moderate size 

 and the cardinal edge is deeply grooved parallel to and just below the 

 margin; the interior reflects the external ribbing. Alt. 85, lat. 80, convexity 

 of left valve 16 mm. Types in the National Museum. 



This interesting form is represented by very perfect internal and external 

 casts of the left valve and other less perfect examples. It is doubtless the 

 precursor of the recent P. luriceus group. 



Pecten (Chlamys ?) discus Conrad. 

 Pecten discus Conrad, Pac. R. R. Rep., vii., p. 190, pi. 3, fig. i, 1857; not of Cooper, 

 Cal. State Min. Bur. Bull., No. 4, p. 57, pi. 4, figs. 55, 56, 1894. 



