Fossils from Mulde, Gotland. 145 
Trochite, gen. et sp. indet. 
Four columnals rather higher, apparently with circular 
body, circular flange, and pentagonal lumen. The facet is in 
one specimen (fig. 7) divided into a depressed central area and 
an elevated outer area, the latter divided into about twelve 
rounded portions (knobs almost) by grooves radiating from 
the central area. In this, and in all the rest to a less extent, 
the flange is seen to be composed of concresced tubercles. 
Total width of this is about 1:2 millim. 
Compare flanges of Gissocrinus verrucosus, Bather (Crin. 
Gotland, Svenska Vet.-Akad. Handl. vol. xxv. no. 2, pl. x. 
figs. 371, 372, 375) ; but the facet is not similar. 
fh AD. 
ANNULOSA. 
Clas ANNELIDA. 
Order POLYCH AXTA (Tusicona). 
CoRNULITES, Schlotheim [1820]. 
Cornulites scalariformis, Vine. 
Cornulites scalariformis, Vine, 1882, Quart. Journ. Geol. Soc. 
vol. xxviii. p. 379, pl. xv. figs. 1, 9, & 10. 
Our specimens are characteristic in general form, but 
dwarfed, being only half the size of the specimens found in 
the Wenlock Shales by Vine. 
Silurian; Mulde, Gotland. Rare. 
ConcHIcoLiTEs, Nicholson [1872]. 
Conchicolites Nicholsonii, Vine. 
Conchicolites Nicholsonit, Vine, 1882, Quart, Journ. Geol. Soc. 
vol. xxxviil. p. 381, pl. xv. fig. 2. 
This species was originally described from the Wenlock 
Shales of this country, and Vine also found it in material 
from Gotland. . | 
Our specimen is probably a young tube, since it measures 
only } inch (37125 millim.) in length, 
Silurian; Mulde, Gotland. 
Conchicolites tuberculifera, sp. nu. (Pl. ILL. fig. 4.) 
Tube calcareous, tapering, slightly curved; averaging 
3 millim. in length, diameter of mouth about £ millim. 
