SILURIAN SYSTEM : ZEBINGYI STAGE. ' 



165 



that it is typically a Wenlock form but that it occurs as high as 

 the zone of M. scanicus of the lower Ludlow shales " (Lower Pal. 

 Fossils, N. Shan States, page 91). Also Tentaculites elegans Barr., 

 agreeing in every respect with specimens from Bohemia. The fossils 

 are of small size, averaging 3-4 mm. in length, but some reach 

 a length of 7-8 mm. 



" They are slender, conical shells, tapering at first rather slowly, and then 

 more rapidly towards the apex, with regular, equal, and equidistant rings, 

 separated by rather wider interspaces ; a fine longitudinal lineation also 

 ornaments the shell, and is most distinct in the interspaces. Most of the 

 specimens are more or less crushed, but nearly all have a longitudinal groove 

 or depression extending from the mouth to about half-way down one side 

 of the shell, and it seems to be a constant feature (as in T. cancellatus Richter), 

 and not the result or accidental injury. It is represented in Barrande's figure, 1 

 but no comment is made upon it." (Op. ext., p. 125.) 



The species is believed by Kayser to be identical with, or only 

 a variety of, T. acuarius Richter, which occuis in the Harz in 

 Silurian beds, associated with Favosites gotlandica, Cardiola inter- 

 rupta, etc., but Bariande mentions some important distinctions 

 between the two species. In Bohemia Tentaculites elegans ranges 

 from Et. F 2 to H 1, and is therefore a Devonian species. Besides 

 these a small Pteropod, comparable with Styliolina Icevis Richter, 

 from the Nereites beds (Lower Silurian) of the Thiiringer Wald, 

 also occurs in the black limestone. 



The fossils found in the grey limestones and associated shaly 

 bands comprised : — Vlasta sp., a small 



Fossils: Flaggy lime- stron ~i y ribbed sheU with a l arge incurved 

 stones. ° J T7- 7 7 • 



beak, resembling V. tumescens and V. boncmica 

 Ban ., both from Et. K 2 (Wenlock) of Bohemia. A form comparable 

 with V . tumescens has also been recorded by Tschernychew from the 

 lower Devonian of the Urals ; Orthoceras aff. commutatum, a lower 

 Dcvonia species of the Harz, allied to 0. distans Sow., from the lower 

 Ludlow of England, and another species with more numerous and 

 more closely placed septa. 0. aff. mocktreense Sow., a specimen of 

 which, from another locality, has been described and figured by 

 Mr. Cowper Reed (Op. cit., p. 127, PI. VII, fig. 9), also occurs here 

 as I found on my last visit to Zcbingyi, when I obtained a fine 

 specimen. It is an upper Ludlow form, but sometimes occurs in 

 the Wenlock. Other genera and species of Cephalopoda are also 



1 Syst. Silur. da la Boheme, Vol. HI, PI. XIV, tigs. 20—27. 



