262 Transactions of the Society. 



Nonionina depressula (Walker and Jacob). 

 Nautilus depressulus Walker and Jacob, 1798, Adam's Essays, Kammacher's 



edition, p. 641, pi. xiv, fig. 33. 

 Nonionina depressula Brady, 1884, Chall. Kept., p. 725, pi. cix, figs. 



A fair number of specimens found. They vary a good deal in 

 shape. Most of them are slightly elongate, and the edge view of 

 these is not quite symmetrical, the final chambers being a little 

 lobsided. Some of these examples match the JSf. scapha (?) figured 

 by Brady (Chall. Kept., pi. cix, fig. 16), but I have put them under 

 this heading as the greater number are more circular in outline 

 and therefore nearer to N. depressula. 



Nonionina umhilicatula (Montagu). 

 Nautilus umbUcatulus Montagu, 1803, Tert. Brit., p. 191 ; Suppl., p. 78, 



pi. xviii, fig. 1. 

 Nonionina umhilicatula Brady, 1884, Chall. Kept., p. 726, pi. cix, figs. 8, 9. 



Excellent examples occur. 



Nonionina scaplia (Fichtel and Moll). 



Nautilus scapha Fichtel and Moll, 1798, Test. Micr., p. 105, pi. xix, figs. d-f. 

 Nonionina scapha Brady, 1884, Chall. Eept., p. 730, pi. cix, figs. 14, 15, 

 and 16 (?) 

 The tests are rather small, but occur fairly frequently. 



Nonionina turgida (Williamson). 

 Botalina turgida Williamson, 1858, Eec. Foram. Gt. Britain, p. 50, pi. iv, 



figs. 95-97. 

 Nonionina turgida Brady, 1884, Chall. Kept., p. 731, pi. cix, figs. 17-19. 



Several forms found. The one which occurs most frequently is 

 not well developed. It is equilateral and narrower than the type- 

 form. The inequilateral variety is much smaller and rare. 

 Besides these, there are a couple nearer to the type, but one of 

 them is much flattened. 



Nonionina houeana d'Orbigny. 



Nonionina houeana d'Orbigny, 1846, For. Foss. Vienne, p. 108, pi. v, figs. 



11, 12. 

 N. houeana Brady, 1884, Chall. Eept., p. 729, pi. cix, figs. 12, 13. 



A single specimen, not quite circular in outline, with narrow, 

 slightly curved chambers. The test is compressed and small, and 

 cannot be considered typical. 



Nonionina orhicularis Brady. 



Nonionina orhicularis Brady, 1881, Denkschr. k. Akad. Wiss. Wien., 



vol. xliii, p. 105, pi. ii, fig. 5. 

 N. orhicularis Brady, 1884, Chall. Eept., p. 727, pi. cix, figs. 20, 21. 

 N. orhicularis Madsen, 1895, Medd. Dansk. Geol. Forening, No. 2, p. 217, 



pl., fig. 7. 

 N. orhicularis Millett, 1898, etc., Foram. Malay Archipelago, Journ. Eoy. 

 Micr. Soc, 1904, p. 600, pl. xi, fig. 1. 



A single example. It agrees best with Millett's figure, though 

 the test is rather more compressed. The granulation along the 

 sutural line is well marked. 



