On Microzoa, &c. By C. D. Sherborn & F. Chapman. 747 



remain as N. soluta Reuss, as figured by Von Hantken. In the 

 British Museum (Natural History), tablet "49,531, London Clay, 

 Haverstock Hill, London," are two large and single chambers, 

 exactly like the last chamber of our figure. They are marked 

 " N soluta ? Reuss," by Prof. Rupert Jones,* and we had no 

 doubt on seeing them, that they were upper portions of the same 

 form that we figure, having rapidly increasing chambers. Of 

 Reuss' original type, one specimen only; black clay. Of Von 

 Hantken's variety, the figured specimen, from the black clay and a 

 few single chambers from the brown. 



Nodosaria ovulata n. sp., plate XIV. fig. 27. — A series of sub- 

 cylindrical, egg-shaped chambers, separated from each other by a 

 short neck. This is the only specimen found in which there is a 

 series of chambers ; but as there are many single chambers in the 

 brown clay, we consider it a permanent variety. Brown clay. 



Nodosaria arundinea Schwager, plate XIV. figs. 28, 29. 

 Schwager, 1866, ' Novara' Exped,, Geol. Theil, Bd. ii. p. 211, plate v. 

 figs. 43-5. — This long narrow Nodosaria has been considered by 

 former authors to be the same as N. longiscata of d'Orbigny 

 (Foram. Tert. Vienne, 1846, plate i. figs. 10-11) ; but on a careful 

 examination of his figure, we find that the chambers end' basally in 

 an angular manner, the apices of the next below joining them in 

 the centre, so that the shell presents, as it were, the appearance of 

 a pile of narrow sugarloaves. In the table attached to Jones and 

 Parker's 'Foram. London Clay' ('Geologist,' vii. 1864, p. 88), 

 we note longiscata bracketed with ovicula d'Orbigny, as occurring 

 at Copenhagen Fields. Having examined some of the original 

 specimens in Prof. Rupert Jones' collection, we find that they are 

 like the forms under notice, and we are more confirmed in the 

 view that we are not dealing with d'Orbigny 's longiscata. In 

 ►Schwager's figures the precise form of our shells is given ; those 

 with the swollen centres being much rarer than those uniformly 

 parallel-sided. All our examples are in a fragmentary state ; we 

 have not met with any specimens of more than two chambers. 

 Mr. Shrubsole in his paper on ' The New Town- Well at Sheerness,' 

 Proc. Geol. Assoc, v. (1876-8) p. 360, quotes N. longisecta as 

 occurring ; but we have treated this as a misprint for longiscata. 

 Rare ; in both clays ; one fragment also from Chelsea. 



Nodosaria subomata Reuss, plate XIV. fig. 30. Reuss, 1865, 

 Sitz. k. Ak. Wiss. Wien, lii. p. 459, plate i. figs. 9-10.— A smooth 

 Nodosaria, ornamented with short riblets crossing the septa. Under 

 this name Reuss also figures one specimen ribbed continuously from 

 end to end ; but others, and ours, have fine ribs only at the junction of 

 the chambers. In our specimen these are a little oblique; and from the 

 fragment left to us we gather that the chambers were drop-shaped, 



* Catal. Foss. Foram. Brit. Mus., 1882, p. 20. 



