67 



Fig. 20b. Distribution of the decapod crab, Randallia americana, indicative of the northern 

 Gulf, intermediate shelf region. Number of specimens at each station circled. 



infauna on the clayey bottoms of the southern intermediate shelf are: the 

 gastropods, Architectonica nobilis, Natica elenae, Distorsio constrictus, 

 Bursa nana, Harpa crenata, Hormospira maculosa, Conus recurvus, and 

 Conus scalaris; the scaphopod, Dentalium oerstedii; and the lamellibranchs, 

 Noetia delgada, Glycymeris tesselata, Chlamys circularis, Plicatula inezana, 



