154 Mr. F. Chapman on some 



Primitiopsis, Jones [1887]. 



Primitiopsis j^^nnifrons, Jones, 



Prunitiopsis planifrom, Jone<, 1887, Sihir, Ostrac. Gothland, p. 6, 

 woodcuts; Jones, 1838, Ann. & Mag. Nat. Hist. ser. (i, vol. i. p. 406, 

 pi. xxii. tigs. 1 a~d. 



Somewhat like a long Frimitia with the reticuhite orna- 

 ment of P. ornata. The anterior border, however, is more 

 pronounced, and the front part of the interior is partitioned off 

 by a thin cross-wall, 



Silurian ; Mulde, Gotland. Frequent. 



C YP K I u I D A. 



Family CjrprididaB. 



PONTOCYPRIS, G, O. Sars [1865], 



Pontocypris 3Iawii, Jones. 



Pontoa/pris Mmoii, Jones, 1887, Ann. & Maix. Nat. Ilist. ser. 5, vol. xix. 

 p. 182, pi. iv. tigs. 4 & 7 ; Krause, 1891, Zeit3;;hr. deiitsch. geol. 

 Gesellsch. p. 512, pi. xxxiii. tigs. 8rt, b. 



Our specimens are exactly comparable with those figured 

 by Prof. Rupert Jones from Frojel in Gotland. 

 Silurian ; ]\Iulde, Gotland. Rare, 



Pontocypris Mawii, var. proxima, Jones. 



Pontocypris Mawu, var. proxima, Jones, 1889, Ann. & Mag. Nat. Hist. 

 6er. 6, vol. iv. p. 269, pi. xv, figs. 5 a, b. 



A sjiecimen occurs in our series which closely resembles 

 the variety proxima. Prof. Jones records it from Wisby in 

 Gotland. 



Silurian ; Mulde, Gotland, 



Family Bairdiidae. 

 Macrocypkis, G, S. Brady [1867]. 



Macrocypris siliquoides, Jones, 



Macrocypris siliquoides, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 6, 

 vol. xix. p. 181, pi. v. figs. 9 a-c. 



This species is rare at Mulde. It has been recorded from 

 the Wenlock Shales, 



Silurian ; Mulde, Gotland, 



