168 
The number of species common to the buhr-stone and to the Hocene of Claiborne, Ala 
They are comprised in the following list. 
remarkable. 
GEOLOGICAL SURVEY 
Turretelli Mortoni, 
< humerosa, 
Monoceros armigeros, 
Ancillaria altile, 
Voluta Sayana, 
Gasteropoda. 
Fissurella tenebrosa, 
Infundibulum trochiformis, 
Crepeduda lyrata, 
we dumosa, 
Dentalium arciformis, 
Natica striata, 
“  etiles, 
“ — limula, 
Sigaretus bilix, 
Acteon pomilis, 
Scalaria venusta, 
Meleagris antiquatus, 
Turritella carinata, 
iW Mortoni, 
sf humorosa, 
se gracilis, 
Cerithium striatum, 
Pleurotoma depygis, 
© monelifera, 
Cancellaria alveata, 
Cardita planicosta, 
«“ — Blandingi, 
Cytherea ovata, 
Lutraria lapidosa, 
Ostrea compressirostra, 
“  selleeformis, . 
Panopea elongata. 
Fusus thoracicus, 
“  limulus, 
“  papillalus, 
“  pulcher, 
“  decussatus, 
minor; 
Triton pyramidatum, 
Monoceros armigeros, 
fusiformis, 
cc 
¥ vetustus, 
Melongena alveata, 
Pyrula cancellata, 
74 
Mitra perexilis, 
Ancillaria. scamba, 
1 staminea, 
f altile, 
Terebra costata, 
% venusta, 
Voluta Sayana, 
Oliva gracilis, 
Conus sauridens. 
Lamellibranchiata. 
Mactra pretenuis, 
Lutraria lapidosa, 
Crassatella protexta, 
Corbula nassuta, 
cc oniscus, 
Lellina papyria, 
Lucina pandata, 
“  symmetrica, 
Cardita planicosta, 
fe altecosta, 
3 Blandingi, 
Arca rhomboidella, 
Pecjunculus stamineus. 
Nucula bella, 
Ostrea sellaformis, 
Cytherea equorea. 
elegantissima, 
, Is quite 
