Fossils from Mulde, Gotland. 155 
Bytuocyreris, G. 8. Brady [1880]. 
Bythocypris symmetrica, Jones. 
Bythocypris symmetrica, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 5, 
vol. xix. p. 186, pl. vii. figs. 3, 4, 7. 
The Gotland specimens are rather variable in size, but in 
outline they are quite characteristic. 
This species is already known from the Wenlock Series of 
Shropshire and from bed ¢, Frdjel, Gotland. 
Silurian ; Mulde, Gotland. Gunna 
Bythocypris symmetrica, var. obesa, Jones. 
Bythocypris symmetrica, var, obesa, Jones, 1889, Ann. & Mag. Nat. 
Hist. ser. 6, vol. iv. p. 270, pl. xv. figs. 7 a-c. 
This variety was originally obtained from the red clay, 
bed a, of Northern Gotland (of Llandovery age). 
Silurian; Mulde, Gotland. Very common. 
Bythocypris phaseolus, Jones. 
Bythocypris phaseolus, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 5, 
vol. xix. p. 189, pl. vii. figs. 11 & 12. 
This species is new to the Gotland fauna. It was described 
from a specimen out of the Wenlock Shales of Buildwas, 
Shropshire. 
Silurian; Mulde, Gotland. Very rare. 
Bythocypris Hollit, Jones. 
Bythocypris Hollw, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 5, vol. xix. 
p. 184, pl. v. figs. la, 6, pl. vi. figs. 3.4, b, & 4a, b. 
This is a common and very striking form in the Gotland 
series. Prof. Jones records it from Fréjel and also from the 
Wenlock Shales of Shropshire. 
Silurian ; Mulde, Gotland. 
Bythocypris Hollit, var. oblonga, Jones. 
Bythocypris Hollit, var. oblonga, Jones, 1889, Ann. & Mag. Nat. Hist. 
ser. 6, vol. iv. p. 270, pl. xv. figs. la-c. 
This variety differs from the type in its greater propor- 
tionate length. It was formerly known fon the red clay, 
bed a, of Northern Gotland. 
Silurian; Mulde, Gotland. Frequent. 
