KOXGL. SV. VET. AKADEMIENS HANDL. BAND. 19. X:0 6. 15 



south east of Klir)te have been formed throush deiiuilation and all prove, through the 

 presence of such fossils as Pentamerus coiichidium etc., that they are of the same age 

 with each other and also coeval with Klinteberg. Sandarfve kulle, which is one of 

 the smallest, attains a heioht of about 170 feet above the level of the sea. About 

 80 feet of its substratum consist of shale, similar to that of Petesvik in Habblingbo. 

 The superimposed limestone, which forms the chief part of the hill, is in the lowest 

 beds regularly stratified with a gray cr3-stalline limestone, which passes upwards into a 

 concretionar irregularly bedded limestone. This is partly bluish green, soft and earthy 

 and partly in large patches red, giving the enclosed fossils with their colour a certain 

 resemblance to the Lower Silurian fossils of the Orthoceratite limestone in the main 

 land of Sweden. This rock contains in great abundance beautifully preserved shells 

 of Gastropoda of numerous species and also rare Cephalopoda, such as Ascoceras, Ophi- 

 dioceras, Cyrtoceras, numerous Orthoceratites, and also shells of the Lamellibranchiates, 

 all not found elsewhere. The fauna has a peculiar dwarfed character, being composed chiefly 

 of small shells, none attaining to what may be called the average size of those of the 

 other localities. It forms, as it were, a narrowly circumscribed, local fauna, which has 

 hitherto yielded no less than 39 species of Gastropoda, only from the the red and 

 gray limestones. Of these as many as 27, or 69 percent of the whole amount, are 

 peculiar to this stratum. This surpasses by far the conditions in all other localities. 

 According to the list, 'Wisby" is richer than any other with 77 species. But it must 

 be remembered, first, that this denomination embraces a much larger space than the 

 former region and includes such localities as Kyrkberget and Kalens qvarn, where the 

 limestone is in fact a lumachello. Besides, there are many other localities for a consi- 

 derable distance along the coast where the same paheontological characters prevail. 

 Fourty one species are annotated as pertaining to the stratum c of Wisby, but of these 

 only the small number of ten is peculiar. The shale beds at Djupvik in Eksta con- 

 tain a Gastropodan fauna of 25 species and of these nine are peculiar. Of the other 

 richer localities Samsugn has a total of 34 species against six peculiar, Slite 25 

 species in all against four peculiar, Follingbo 2u species in all against six peculiar, 

 Kliute 23 species in all against two peculiar and Ostergarn 21 species with only one 

 species peculiar from the stratum b. 



What must strike the attention after the first glance on the list of distribution 

 is the great preponderance in number of species of the North Gotland localities over 

 the localities south of Fardhem, such as Rone, Grotlingbo, Bursvik, Nas and Hoburg. 

 This may chiefly be due to real poverty as no such rich deposits as those of North 

 Gotland ever have been discovered there, but it is evident that the total amount of spe- 

 cies found, especially at Hoburg, will be increased in future through continued and 

 oftener repeated researches. Characteristic of these southern parts are the following 

 six species, having their northern limit at Grotlingbo. They are: Platyceras disciforme, 

 Cyrtolites obliquus, Pleurotomaria dolium, Murchisonia moniliformis, Eunema muricatum 

 and Craspedostoma sinnulosum. As a contrast to this minority, no less than 95 species, 

 or more than half the number, have their limits within North Gotland as far as Wester- 

 garn in south on the west coast and Gotheni on the east coast. A few continue as 



