PLATE LI I. 



(iUATERNAKY PECTENS. 



[Unless iithcrwisc stalcil iill iIkihis iin- iiiiproxiinali'ly iiiiliiral size.] 



Page. 



Fid. 1. Pecten (Nodiprden) )iiihnodosu» Sowerhy. I^. S. J. V 128 



Exterior of right valve; altitude 112 imii. Recent, west coast of Mexico. (AI. B. ) 

 Fig. 2. Pecleu. {Clil(imys) haslatiiti Sowerby var. alhldH,i Dall, V. 8. N. M. 150207. Type 136 



Exterior of right valve, showing broad fasciculi; altitude 45 unu. Recent, Iliu^liuk 

 Harbor, Unalaska, B8 fathoms (U. S. Fish Com. station 381,3). |,M. P.) 

 Fii!. 2(1. Same specimen as fig. 2 • 13tj 



Exterior of left valve, showing narrow fasciculi. (M. P.) 

 Fic. 3. Pirteu {Pscudciiiii(.t'niiii) ram-ouvcrensls Whiteaves. Type HO 



Copied from original drawing of right valve of- type; altitude S mm., X 4. (Ottawa 

 Naturalist, vol. 7, pi. 1, figs. 1 and bi.) 



Recent, off Vancouver Island, British Cohuubia. 

 Fiii. .3(1. Same siiecimen as fig. 3 140 



Co|)ied frniu drawing ol left valve of type. 



248 



9^ 



