914 Transactions of the Society. 



Polymorphina cylindroides, Koemer. 



Polymorjphina cylindroides, Eoemer, 1838, Neues Jahrb. fur Min., &c., 

 p. 385, pL iii. fig. 26. 

 „ lactea, var. acuminata, Williamson, 1858, Eec. For. Gt. 



Br., p. 71, pi. vi. fig. 148. 

 Skye (Williamson) ; Shetland (Waller). 



Polymorphina compressa, d'Orbigny. 



Polymorphina compressa, d'Orbigny, 1846, For. Foss. Vien., p. 233, 

 pi. xii. figs. 32-34. 

 „ lactea (typica), pars, Williamson, 1858, Rec. For. Gt. 



Br., p. 70, pi. vi. figs. 145, 146. 

 Generally distributed. 



Polymorphina complanata, d'Orbigny. 



Polymorphina complanata, d'Orbigny, 1846, For. Fos. Vien., p. 234, 



pi. xiii. figs. 25-30. 

 „ „ Balkwill and Millett, 1884, Journ. Microsc. 



and Nat. Sci., vol. iii. p. 84, pi. iv. fig. 9. 

 Shore-sand, Gal way (Balkwill and Millett). 



Polymorphina sororia, Eeuss. 



Polymorphina (Guttulina) sororia, Eeuss, 1862, Bull. Acad. Eoy. Belg., 

 ser. 2, vol. xv. p. 151, pi. ii. figs. 25-29. 

 „ sororia, Eobertson, 1882, Proc. Nat. Hist. Soc. Glasgow, 



vol. V. p. 268. 

 The cuspidate variety of this form has been dredged by Mr. Eobert- 

 son in Loch Fyne, and by Mr. Wright off the south-west of Ireland. 



Polymorphina rotundata, Bornemann, sp. 



Guttulina rotundata, Bornemann, 1855, Zeitschr. d. deutsch. geol. 



Gesell., vol. vii. p. 346, pi. xviii. fig. 3. 

 Polymorphina rotundata, Eobertson, 1882, Proc. Nat. Hist. Soc. 



Glasgow, vol. V. p. 268. 

 Oban and Loch Fyne (Eobertson) ; north of Ireland (Wright) ; 

 Dublin coast (Balkwill and Wright). 



Polymorphina concava, Williamson. 



Polymorphina lactea, var. concava, Williamson, 1858, Eec. For. Gt. 

 Br., p. 72, pi. vi. figs. 151, 152. 

 Brixham (Williamson) ; estuary of the Dee (Siddall) ; South Donegal 

 (Wright); south-west of Ireland, 110 fathoms (Wright); Mount's Bay 

 (Millett) ; Dublin coast (Balkwill and Wright). 



Polymorphina myristiformis, Williamson. 



Polymorphina myristiformis, Williamson, 1858, Eec. For. Gt. Br., 

 p. 73, pi. vi. figs. 156, 157. 

 Widely distributed, and in certain localities very common. 



