- 7A2 ~ 



PIIAOOIDSS (HUIS) TITHOniS Dall. 



Phaeoiges ( Here ) tit^.onis Dall, 1905, Trans. ,7agner Pree Inst. 

 Sci., Philadelphia, vol. 5, pt . 6, p-g, 1566-1567, pi. 

 50, fig. 10. 



Sesorigtion .- "Shell small, rotimd, \7ith rather prominent 

 beaks, the rlorsal areas not distinguished hy s culpture and indi- 

 cated onlj^ hy faint, broar!, radial sulci; lunule small and deep, 

 no escutcheon visible; surface with -nrofuse, elevate'\ rather 

 mievenly spaoe:"^, ooicentric lamellae; hinre well '"^ eveloiDer" ; mar- 

 s-ins minutely c-enulate-. Alt. 4.0, Ion. 4.5, di- ,. ~, i nmi." 



"This little shell, represented only by a single valve, is 

 apparently the precursor of ^. sombrerensis .DpII Cl), a recent 

 species from :intillean waters, which is, ho\"ever, larger, v/ith 



(1). Bull. I 'us. OomT)t. 3ool. Harvard, vol. 12, p. 264, 1886; 



Proc. U. S. llat. ITus., vol. 12, it. 255, r,l. 14, fig. 15, 

 1339. 



more regi^lar concentric sculptu.re, m.o ~e delicate hiri^p, . near- 

 ly obsolete lunule. A:- -i e radial impression, which v/as at 

 first taken to be pathological, e^rtends on the fossil towards the 

 anterior base. The ■-•■?■ ■■^n-^. -^--rr-Q show faint tr^ce"^- •'■-^ ^ similar 



