TWENHOFEL: EXPEDITION TO THE BALTIC PROVINCES. 301 
lands and from one to five miles from the latter place, are outcrops of 
thick-bedded dolomitic limestone with very poorly preserved fossils 
and these chiefly corals. These strata may lie between the Lower 
Lyckholm of Kappa-Koil and the strata of Pirk, or may be some 
division of the Borkholm. 
The exposures at Saremois, a part of the Herkiill estate, are cites 
extensive, occurring in ditches which have been crisscrossed over a tract 
of about forty acres. Most of the ditches are excavated through 
alluvium, but in many places what appear to be buried knolls of the 
country rock have been cut through. The lithology and fauna are 
the same as at Pirk; but the strata are thought to be from ten to fifteen 
feet higher in the section and they must lie almost immediately below 
the lowest beds of the Borkholm formation, as the latter outcrop in 
the woods between Herkiill (about a mile southeast) and Saremois, 
and the vertical distance between the two outcrops amounts to but a 
few feet. Corals are quite common at Saremois, while rather rare at 
Pirk, due probably to the small size of the exposure at the latter place. 
Strata with a lithology and fauna similar to that above described 
also occur near the village Rannakiill, about six miles northeast of 
Hapsal. Thin bands of gray shale separate the four to six inch beds 
of yellowish white, somewhat marly-like limestone. 
From these different localities have been collected the species whose 
names follow. Those which are not followed by the authority also 
occur in the Lower Lyckholm: — 
Clathrodictyon cf. vesiculosum. 
Halysites catenularia. 
Paleofavosites asper. 
Syringophyllum organum. 
Dianulites grandis. 
Diplotrypa petropolitana. 
Graptodictya obliqua Bassler. 
Atrypa imbricata. 
Orthis actoniae. 
1 aaa flabellum. 
11. Platystrophia biforata lynx. 
12. Rafinesquina deltoidea. 
13. Byssonychia cf. radiata. 
14. Bucania cornu. 
15. crassa. 
16. radiata. 
ea Sigs a es Th ae 
