230 



Placuna scabra, (M.) 

 Plicatula urticosa, (M.) 

 Avicula laripes, (M.) 



A cast ; species undetermined, (M.) 

 Pinna. — Two species not determined, (M.) 

 Pectunculus. — Species undetermined, {M.) 

 Cuculla3a vulgaris, (M) 

 antrosa, (M.) 

 Nucula. — Small casts of an unknown species, (M.) 

 Trigonia thoracica, (M.) 

 Cardium. — Apparently two species. 

 Cardita ? decisa, (M) — Delaware. 

 Crassatella vadosa, (M.) 



tellini, (M.) 

 Venilia Conradi, (M.) — Arneytown. 

 Cytherea excavata, (M.) — Arneytown. 

 Lutraria ? 



Pholodomya occidentalis, (M.) — Delaware. 

 Pholas cithara, (M.) — Monmouth county. 

 Teredo tibialis, (M.) 

 Clavagella armata, (M.) — Arneytown. 

 Terebratula Harlani, (M.)— New Egypt. 



fragilis, (M)— New Egypt. 



Sayi, (M.) — Burlington county. 

 Serpula barbata, (M.) — Deal, Monmouth county. 

 Hamulus onyx, {M.) 



Crustacea. 

 Astacus. — A small species, Delaware. 

 Cancer. — Fragments of several distinct species have been found. 



EcHINODERMATA. 



Clypeaster florealis, (M.) — Delaware. 



geometricus, (M) — Delaware. 

 Spatangus ungula, (M.) — Delaware. 

 Turbinolia inauris, {M.) 



LOCAL DETAILS OF THE GEOLOGY OF THE MARL REGIOIV. 



With a view to exhibit the various aspects which thegreensand 

 assumes in different neighbourhoods, and to bring forward many 



