148 Mr. F. Chapman on some 
the examples from Fréjel, and he also records it from Wool- 
hope and Ironbridge. 
Silurian ; Mulde, Gotland. 
Primitia valida, var. breviata, Jones & Holl. 
Primitia valida, var. breviata, Jones & Holl, 1886, Ann. & Mag. Nat. 
Hist. ser. 5, vol. xvii. p. 410, pl. xiv. figs. 8 a, b. 
Formerly described from the Wenlock Shales. 
Silurian; Mulde, Gotland. 
Primitia valida, var. angustata, Jones & Holl. 
Primitia valida, var. angustata, Jones & Holl, 1886, Ann. & Mag. Nat. 
Hist. ser. 5, vol. xvii. p. 410, pl. xiv. figs. 4 a, d. 
This variety was also found in the Wenlock Shales. 
Silurian; Mulde, Gotland. Very rare. 
Primitia fabulina, Jones & Holl. 
Primitia fabulina, Jones & Holl, 1886, Ann, & Mag. Nat. Hist. ser. 5, 
vol. xvii. p. 408, pl. xiv. figs. 2a, b. 
Two specimens, rather more elongate than the type figure, 
were found in the Gotland series. Originally described from 
the Wenlock series of Dudley Tunnel. 
Silurian ; Mulde, Gotland. 
Primitia elongata, Krause. 
Primitia elongata, Krause, 1891, Zeitschr. deutsch. geoi. Gesellsch. 
vol. xliii. p. 494, pl. xxx. figs. 4a, 6; Krause, 1892, ibid. vol. xliv. 
p- 386, pl. xxii. fig. 2. 
This species has been described from the Silurian Drift- 
gravel of Mark Brandenburg. 
Silurian ; Mulde, Gotland. Very rare. 
Primitia punctata, Jones. 
Primitia punctata, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 5, vol. xix. 
p- 193, pl. vii. figs. 9a, 6. 
Has been previously recorded from the Wenlock Shales of 
this country. 
Silurian; Mulde, Gotland. Very rare. 
Primitia humilis, Jones & Holl. 
Primitia humilis, Jones & Holl, 1886, Ann. & Mag. Nat. Hist. ser. 6 
vol. xvil. p. 409, pl. xiv. figs. 6 a, b, 9 a-c. ; 
