464 •^- ^^- ^- R'^'^'^- 



? Spit zJ) er gen: in deposits belonging, according to Pompeciu, 

 to the "? Portlandian (-Lower Chalk)". 



Nova Zembla: in the Ancella deposits. 



Russia: Callovian, 



Germany: Dogger (from the "Coronaten-Schichten" to the 

 Parkinsonia zone). 



England: Dogger — Lowermost Malm (from Lower Oolite to 

 Coralline Oolite). 



24. Pecten (Entolium) cingulatus Рнплл1\ч. 

 PI. XXXIII, fig. 7. 



(1829) 1835. Pecten cingulatus Phillips, Geologj' of Yorkshire. I. PI. 5, fig. 11. 

 183(5. Pecten cingulatus Phillips; Goldfus.s, Petref. (ierm., II, p. 74; PI. 99, fig. 3. 



The vahe oval, but little arched; the angle at the umbo ca. 90°; 

 from each side of the umbo a narrow depression down along the 

 sides, losing itself at about halfway down the valve. The ears small, 

 with slightly blunt angles and somewhat rounded corners. The sur- 

 face with fine, concentric rings of growth. 



Height 21 mm, breadth 18 mm. 



The species described resembles greatly tlie Pecten ligured by 

 Lahusen ^ as P. (lemissus, but its surface seems to have a different 

 character. It is doubtful, whether a couple of valves from boulders 

 found at Danmarks Havn on the south side of Vesterdalen can be 

 referred to P. cinyuhdus, as the form of the ears cannot be seen. The 

 same applies to a couple of specimens from the boulder with Лг/се//я 

 mosquensis from Harefjæld. 



Distribution. North-East (ireenland: in the reddish brown, 

 loose-lying sandstone down from "Trækpasset'" (50 m above the sea) 

 on Store Koldewey Island (1 spec). 



Germany: Lias to Lowermost Malm. 



England: Cornbrash (Upper Dogger). 



25. Pecten (Entolium) erraticus Fiebelkorx ? 



18УЗ. Pecten [Entolium) enaticns Fiebelkorn, Geschiebe der oberen Juraformation, 



p. 400; PI. 14, fig. 12. 



Some specimens of a very flat Pecten seem from their whole 

 form and their surface, covered with regular, concentric furrows, to 

 be referable to this species. As the form of the ears could not, 

 however, be seen on the available specimens, the determination is 

 somewhat uncertain. 



Pecten eiraticns is given by Fiebelkorx as occurring in Ponune- 

 rania in boulders, which he refers to the Middle Kimmeridgian. 

 1 Lahl'Sen, Die Fauna der Jurass. Bild, des Rjasanschen Gouv., PI. 2, fig. 4. 



