Fossils from Mulde, Gotland. 153 
? Cythere subquadrata, Jones. 
? Cythere subquadrata, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 5, 
vol. xix. p. 191, pl. vii. figs. 6a, b, & 14a, 6. 
This species is represented from Gotland only by a single 
valve. It has been recorded from the Wenlock Series of 
Shropshire. 
Silurian; Mulde, Gotland. 
Tuutpsura, Jones & Holl [1869]. 
Thlipsura plicata, var. unipunctata, Jones. 
Thlipsura plicata, vay. unipunctata, Jones, 1887, Ann. & Mag. Nat. Hist. 
ser. 5, vol. xix. p. 403, pl. xii. figs. 11 & 12. 
A single example of this variety was found at Mulde. 
Silurian ; Mulde, Gotland. 
Thlipsura v-scripta, Jones & Holl, var. discreta, Jones. 
Thlipsura v-scripta, J. & H., var. discreta, Jones, 1887, Silur. Ostrac. 
Gothland, p. 6; Jones, 1888, Ann. & Mag. Nat. Hist. ser. 6, vol. i. 
p- 404, pl. xxii. figs. 9 a-c, 10. 
Good typical specimens occur in our washings from Mulde. 
Silurian; Mulde, Gotland. Very common. 
ZECHMINA, Jones & Holl [1869]. 
Aichmina bovina, Jones. 
LEchmina bovina, Jones, 1887, Ann. & Mag, Nat. Hist. ser. 5, vol. xix. 
p. 412, pl. xiii. fig. 6; Jones, 1888, Ann. & Mag. Nat. Hist. ser. 6, 
vol. i. p. 409, pl. xxii. fig. 8. 
Five very perfect specimens, showing the delicate toothed 
margin, were found in our material. It has occurred before 
in the Wenlock Shales of this country and also at Frojel in 
Gotland. 
Silurian ; Mulde, Gotland. 
Aichmina bovina, Jones, var. punctata, Krause. 
chmina bovina, Jones, var. punctata, Krause, 1892, Zeitschr. deutsch. 
geol. Gesellsch. vol. xliv. p. 397, pl. xxii. fig. 18. 
An example of this beautiful little variety occurred at 
Mulde. ‘The spike in our specimen is rather longer than that 
shown in Krause’s figure. Krause records this variety from 
the ‘ Graptolithen-Gestein”’ in the Silurian Drift of Mark 
Brandenburg in N. Germany. 
Silurian ; Mulde, Gotland. 
