PLATE XXVI. 



MIOCENE PECTENS. 



[Unless otherwise stated all tiyuies are appr<ixiin!itely natural sixe.] 



Page. 



Fig. 1. Pecti'n (Pliiijidi-teiiiiini) deserll Conrad. 1). A 85 



Exteridi- of slightly worn right valve; altitude 35 mm. Miocene, Carrizo Creek dis-triet, 

 San Diego County, Cal. (M. B. ) 



Fig. 2. I'ecten ( Phigiortrnium ) deserti (!'nnrad. 1 ). A 85 



Exterior of slightly imperfect right valve: altitude 40 njin. Same locality as for 

 tig. 1. (S.) 



Fig. '2(t. Same specimen as tig. '2 85 



Profile of a somewhat unusually convex right valve as viewed from the rear. (M. P.) 



Fk;. .S. Pnii'H ( Plagioctrniuni } deifi'rti ( 'i )nrad. I). A S5 



Exterior of a slightly imperfect left valve: altitude '■'•4 mm. Same locality as for 

 fig. 1. (S.) 



Fig. 4. Pec-len (■Plai/iiicteniuin ) disi rli ( 'onrad. I >. .\ 85 



Exterior of left valve; altitude 37 mm. Same locality as for tig. 1. (M. B. ) 



Fig. 4a. Same specimen as tig. 4 85 



Profile of left valve as viewed from the rear. (M. P.) 



Fig. 5. Ptrten (Phr/hHeuiKin) aiider.'ioiu n. fi]\ U. S. N. M. 164932. Tyi)e 82 



Mold of interior of left valve with portion of exterior showing sculpture; altitude 

 38 nmr. Miocene, Zayante Creek, Santa Cruz County, Cal. (M. P.) 



Fig. 5((. Same specimen as fig. 5 82 



Profile of left valve as viewed from the rear. (M. P.) 



Fig. fi. Pecten (Plaijiortenium) andersoui n. sp. L. S. J. V. Cotype 82 



Exterior of left valve; altitude 14 mm., X 2. Miocene, Frenchman's Tower, near 

 Stanford University, Santa Clara County, Cal. (M. B.) 



Fig. 7. Pecten. [Plni/ioctenium) andersoni n. sj). V. S. N. M. 164932. Cotype 82 



Exterior of right valve (anterior ear liroken); altitude 20 mm. Same locality as 

 fig. 5. (M. P.) 



Fig. 8. Pa-ti'ii ( Plaglorteniinn) iindir.mui n. sp. L. S. ,T. l'. Cotype 82 



Mold of interior nf imperfect rigltt valve, showing shape and sculpture of anterior 

 ear; altitude 30 mnj. Vaipieros formation (lower Miocene), Searsville roa<l, near 

 Stanford University, Santa ( 'lara County. Cal. (M. B. ) 



Fig. 8((. Same specimen as fig. s 82 



Profile of right valve as viewed from the rear. (.M. P.) 



Fig. 9. Pecten {Pku/iuctenium) anderxoni var. Iinrkiriiimoi n. sp. and var. C. A. S. Ty[)e 83 



Imperfect mold of interior of right valve showing ])ortion of exterior, with sculpture; 

 altitude 41 nmi. Lower Miocene, Barker's ranch, Kern County, Cal. (S.) 

 196 



