Fossils from Mulde, Gotland. 165 



Bythocypris, G. S. Brady [1880]. 



Dythocypria symmetricay Jones. 



Bythocypris symmetrica, Joni'.^, 18S7, Anu. & M:i;i;. Nat. Hist. ser. 6, 

 vol. xi.x. p. l6t>, pi. vii. tig's. 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 

 Shroj)shire and from becl c, Frojel, Gotland. 



Silurian ; Muldo, Gotland. Coranioti. 



Bythocypris symmetrica^ var. obesa, Jones. 



Bythocypris symmetrica, var. obei^a, Jones, 18S9, Ann. & Ma{^. Xat. 

 Hist. ser. 6, vol. iv. p. l'70, pi. xv. tigs. 7 a-c. 



I'his variety was originally obtained from the red clay, 

 bed a, of Northern Gotland (ot Llandovery age). 

 Silurian ; Mulde, Gotland. Very common. 



Bythocypris phaseolus, Jones. 



Bythocypris phascolus, Jones, 1887, .\nn. it Mag. Nat. Hist. ser. 6, 

 vol. -vix. p. 189, pi. vii. tigs. 11 & 12. 



This species is new to the Gotland fauna. It was described 

 from a specimen out of the Wenlock Shales of Buikhvas, 

 Shropshire. 



Silurian; Mulde, Gotland. Very rare. 



Bythocypris Ilullii, Jones. 



Bythnq/pris Ilollii, Jones, 1-87, Ann. & Mag. Xat. Hist. ser. 6, vol. xix. 

 p. l64, pi. v. ligs. 1 a, b, pi. vi. tigs. 3 a, b, &. 4 a, b. 



This is a common and very striking form in the Gotland 

 series. Prof. Jones records it from Frojel and also from the 

 Weidock Shales of Shropshire. 



Silurian ; Mulde, (iotiand. 



Bythocypris JlolUi, var. oblonga, Jones. 



Bythocypris Hol/ii, var. oblonya, Jones, 1889, Ann. & Mag. Nat. Hist. 

 ser. 6, vol. iv. p. 270, pi. xv. tigs. 1 a-c. 



This variety differs from the type in its greater propor- 

 tionate length. It was formerly known from the red clay, 

 bed a, of Northern Gotland. 



Silurian; Mulde, Gotland. Frequent. 



