262 



BuivlvETIN 31 



26a 



Cardita bilineata .31. 86 



carolinensis 85 



subquadrata .31 86 



subrotunda .31 86 



vigintinaria .31 86 



Cardium claibornense 41 132 



var. gainesense 131 



harrisi ^/ I3^ 



hatchitigbeense 132 



magnum I33 



ouachitense 42 132 



Caryatis exigua 148 



exigua 47 1 5° 



Chama monroensis 41 130 



dementia mercenaroidea 47 151 



Coralliophaga claibornen- 



sis 48 154 



Corbis claibornensis 40 123 



distans 124 



lamellosa 123 



undata 40 124 



Corbula 185 



alabamiensis stock 185 



alabamiensis .56 185 



aldrichi var 188 



var. amara 200 



var. citronella 185 



compressa 5J 187, 189 



conradi 186 



densata 186 



extenuata 58 194 



var. fossata 58 193 



var. gregorioi 185, 188 



gibbosa .58 191 



ignota 19 J 



var. ima 1 85 



murchisoni .58 191 



nasuta 185 



oniscus 191 



perdubia 187 



perdubia 1 88 



rugosa 188, 258 



smithvillensis 57 1 88 



subengonata 185, 186 



Corbula subnasuta 185 



texana ;^j 190 



wailesiana 



Crassatella alta 104 



Crassin ella minor .32 92 



Crassatella flexurus 100 



halei 96 



palmula 90 



productus 100 



protextus 99, 100 



texalta 193 



trapaquara 96 



tumidula 96 



Crassatellites altef ormis 99 



altus 35, 36 104 



antestriatus .34 98 



clarkensis 34 100 



f errocarolinus 100 



clarkensis, var. ludovici- 



anus 102 



ludovicianus 102 



minor 92 



negreetensis 33 97 



obliquatus 103 



parvus 93 



postclarkensis 100 



productus 100 



protextus 33 loi 



psychopterus 89 



rhomboideus .34 99 



texaltus 36 1 03 



texanus .34 97 



trapaquara .33 96 



Crenella costata 36 



isocardioides ly 35 



latifrons // 35 



margaritacea ly 35 



Crustuloides, n. subgen 89 



Cucullasarca cuculloides 51, 54 



Cultellus conradi 59 1 95 



Cumingia ? keittensis 5^", 33 173 



Cuna ? astartoides 32 94 



