22 Dr M. Sars on Shells from the Earlier and 
Mill. Pecten islandicus, Miill. Cardium fasciatum, 
Mont. Venus ovata, Penn. Tapes pullastra (Venus), 
Mont. Tellina proxima, Brown. Saxicava pholadis (My- 
tilus), L., syn. S$. rugosa, Thracia villosiuscula, Macgill. 
(Twenty-seven new species found. Names not given. 
Another bed found, about 30 feet lower, containing thirty- 
two species, all now living in the neighbourhood, among 
which are Hehinus drobachiensis and an Hchinocyamus angu- 
losus.— Translator. ) 
Léveidet near Skien, Height 120 feet and upwards. 
Shell-bed rests on the rock. 
Balanus porcatus, da Costa, Darw. _ B. crenatus, Brug., Darw. 
Buccinum undatum, L. Nassa incrassata (Buccinum), 
Strom. Natica nitida, Don. Velutina levigata (Helix), 
LL. Littorina littorea (Turbo), L. —_L. littoralis (Nerita), L. 
Patella vulgata, L. Acmeza virginea (Patella), Miill. 
Pilidium fulvum (Patella), Mill. Dentalium abyssorum, 
Sars. Anomiaephippium,L. A. patelliformis, L.  Pec- 
ten islandicus, Mill. PP. striatus, Mill. P. danicus, 
Chemn. P. tigrinus, Mill. P. sinuosus, Turt., syn. P. pusio. 
Mytilus edulis, L. Leda pernula (Arca), Mill. Venus 
striatula, Don. V.Ovata,Penn. ‘Tapes pullastra (Venus), 
Mont. Astarte sulcata, da Costa. A. compressa, Mont. 
Mactra elliptica, Brown. — Tellina proxima, Brown. Mya 
arenaria,L., Thracia villosiuscula, Macgill. Pholas can- 
dida, L. 
Echinus drobachiensis, Mill. 
Ommedalsstrand near Skien. Height 100 feet and upwards, 
Sandy clay, and fine sand mixed with shell fragments, in 
all some 50 feet thick. 
Balanus porcatus, da Costa, Darw. _B. crenatus. Brug., Darw. 
Serpula triquetra, L. _ S. polita, Sars. 
Buccinum undatum, L. Nassa incrassata (Buccinum), Strom. 
Natica nitida, Don.  Velutina levigata (Helix), L. —Lit- 
torina littorea (Turbo), L. L. littoralis (Nerita), L. 
Rissoa parva, da Costa=v. R. interr. JR. striata (Turbo) 
Ad.  Emarginula reticulata, Sow. Capulus hungaricus 
(Patella), L. Patella vulgata, L. Acmea virginea (Pa- 
tella), Mill. Pilidium fulvum (Patella), Mill. | Den- 
talium abyssorum, Sars. Anomia ephippium, L. A, 
patelliformis, L. Pecten islandicus, Mill. P. danicus, 
Chemn.  P. tigrinus, Mill. P. striatus, Miill. P. sinuosus, 
