PLATE T. 



MIOCENE PECTENS. 



[Unless otherwise stated all figures are approximately natural size.] 



Page. 



Fiu. 1. Pivten ( Perteii ) keejji n. sp. U. A. Type 00 



Exterior of somewhat imperfect and worn left valve; altitude 75 mm. Miocene. Carrizo 



Greek district, San Diego County, Cal. (M. P.) 



Fig. 2. I'cdeu (Patlnopeden) dilleri Dall. U. S. N. M. 164846. Cotype 62 



Exterior of imperfect right valve; altitude (restored) 180 mm. Upper Miocene or lower 



Pliocene, Eel River, Humboldt County, Cal. (M. B.) 



Fio. 8. J'ecteii. ( C'hlam^ia) Kcipeenm var. hi/dei n. var. D. A. Type 69 



P^xterior of right valve, anterior ear missing; altitude 46 miii. Vacpieros sandstone 



(lower Miocene), Lynch's Mountain, Monterey County, Cal. (M. B.I 



Fig. 3a. Same specimen as flg. 3 69 



Exterior of left valve, anterior ear missing. (M. B. ) 



Fig. 36. Same specimen as fig. 3 69 



Profile of both valves as viewed from the rear. (M. P.J 



154 



