w 



1 Swan AiKulonta. 2 Little Bird Hyria. 3 Painters' Unio. 4 Ambiguous Cas- 

 tulia. 5 Toothed Trigoiiia. 6 Pearly Nucula. 7 Ram-horned Diceras. 8 Deli- 

 cious Pectunculus. 9 A^oah's Area. 10 Eared Cucullwa. 11 Heart Isocardia. 

 12 Striated Hiatella. 13 Guima Cypricardia. 14 ^dtfcZe Cardium. 15 /^«r- 

 ?'0!ivt/ Cardita. 16 i^frf Laso'a. 17 Imbricated Venericardia. 18 Ca^ma T'^ww^. 

 19 /^e« Ortygia. 20 iJaz/ct? Galathea. 21 C/jJO«e Cytherea. 22 Islandic Cyprina, 

 23 Orbicular Exoleta. 



AI''iilUul<>ji X.' (.;'- 



