NEW SPECIES FROM THE SANTA LUCIA MOUNTAINS 457 
A small thin pecten; form ovate, nearly smooth, and marked with fine 
almost microscopic groovings which radiate from the umbo and are deflected 
laterally from a median line on each valve. The shell is marked also by fine 
concentric lines, every fifth or sixth of which is more distinct. The anterior 
auricle is large; the anterior edge forms a right angle with the cardinal margin, 
Fic. 5 Fic. 6 
Fics. 5 AND 6.—P. (Camp.) harfordus, natural size 
and rounds sharply into the deep byssal sinus. The left auricle is small and 
obliquely trunkated. The beaks are sharp and stop at the hinge-line. 
This pecten is compared by Stanton! to Pecten pedroanus, but the latter 
differs from these specimens in having stronger radial markings especially on 
Fic. 7.—Tellina tenuistriata, natural size 
the auricles, and in general outline. It is like P. bellistriatus in its sculpture 
but is smaller; it has finer markings than P. extenuatus Meek. 
Tellina tenuistriata (n. sp.), FIG. 7. 
The specimens collected by the writer are from the Lower Temblor on the 
northern San Antonio headwaters, Monterey County, Cal. They are charac- 
terized by the fine concentric lines on both valves, and low beaks. The valves 
are rounded in front but are oblique and gaping behind; more or less rostrate. 
Dimensions: Length, 2 inches; height, 7 inch; thickness, 3 inch. 
tU.S.G.S., San Luts Folio. 
