748 Transactions of the Society. 



longer, and not so uniform as in the specimen figured by Beuss. 

 As striking examples of the close relationship of the many forms, 

 slightly varying, as well in their Dentaline and Nodosarian shapes, 

 as in their intermittent markings, we may refer to Beuss, Z. d. g. 

 G., hi. (1851) plate hi., D. Philippi Ess., fig. 5, D. Buchii Ess., 

 fig. 6, B. obliquestriata Ess., fig. 11 ; also to Reuss, ftitz. k. Ak. 

 Wiss. Wien, xviii. (1855), plate i., JV. cijlinclrella Ess., fig. 2, 

 D. capitata Boll, fig. 4, D. Sandbergeri Ess., fig. 5, D. Girardana 

 Ess., fig. 6, D. intermittens Bronn, fig. 7, and others. (See lists 

 in Goes's excellent memoir, 1882, K. Sv. Vet.-Akad. Handl., 

 Bd. xix.) From the brown clay. 



Nodosaria clavata Costa, plate XIV. fig. 31. Vagimdina 

 clavata Costa, 1855, Mem. Accad. Sci. Napoli, plate iii. fig. 18, a 

 and b. This variety seems referable to Costa's figure a ; our 

 specimen and his figures are undoubtedly Nodosarise, and, we are 

 disposed to think, monstrosities. One only, black clay. 



Nodosaria hispida d'Orbigny, plate XIV. fig. 32. D'Orbigny, 

 1846, Foram. Tert. Vienne, p. 35, plate i. fig. 24. A short, 

 stout, and thickly spinous Nodosaria. Two specimens; black 

 clay. 



Nodosaria affinis d'Orbigny, plate XIV. fig. 33. D'Orbigny, 

 1846, Foram. Tert. Vienne, p. 39, plate i. fig. 36. — A very large 

 and perfect individual, having all the characteristics of d'Orbigny's 

 figure, with the exception of the basal spike. In its place our 

 specimen has a circular orifice, probably due to fracture. Along 

 the last few chambers the ribs have a tendency to take a spiral 

 direction ; and this in one individual (a passage-form to JV. ba- 

 clenesis d'O.) persists to such an extent that a definite twist has 

 occurred, and the last chamber is turned once round on the next 

 below, the ribs being confusedly coiled together at the con- 

 striction. From the black clay ; fragments numerous in both 

 beds. 



Nodosaria bacillum Defrance, plate XIV. fig. 34. Defrance, 

 1825, Diet. Sci. Nat., xxxv. p. 127, xxxvi. p. 487; Atlas Conch., 

 plate xiii. fig. 4 ; Blainville, Malacologie, plate v. fig. 4. — Large 

 and fine, differing very slightly from the last variety ; it is bulbous 

 at the lower end and not so distinctly constricted in the first 

 three-quarters of the shell. Black clay ; fragments numerous in 

 both beds ; found also at Chelsea. 



Nodosaria badenensis d'Orbigny, plate XIV. fig. 35. 

 D'Orbigny, 1846, Foram. Tert. Vienne, p. 38, plate i. fig. 34.— 

 A short stunted variety of the last, differing from it chiefly in the 

 chambers rapidly decreasing in size. Sowerby, in Wetherell's 

 paper on the ' Hampstead Well,' Geol. Trans., ser. 2, v. plate ix. 

 tig. 8, figures a typical London Clay example. Bare, but occurring 

 in both clays. The figured specimen is from the brown clay. 



