NArxILID^. 
287 
found that the Nautilus referred to the present species by Forbes 
belonged to another species which he describes under the name 
Yaludayiirensis h 
Stoliczka, in his revision of the Nautilidae described by Stanford ", 
observes that “ some of the specimens [of N. CJementinus] agree 
perfectly with the European fossils ; others are, however, very much 
inflated, with a remarkably small umbilicus. Probably we have two 
species, but the materials are not sufficient to prove the correctness 
of this opinion.” 
For my own part I am very much disinclined to regard the Indian 
form of N. Clementinus as identical with the European one, which 
is a much more compressed shell than any of those figured by 
Blanford. 
Horizon. Upper Greensand. Gault. 
Localities. British. Near Folkestone, Kent; Norlington, near 
Ringmer, Sussex (Gault) : Devizes, Wiltshire (Upper Greensand) : 
Cambridge (Cambridge Greensand). — Foreign. Escragnolles (Yar), 
Perte-du-Rhone (Ain), France (Gault). 
Well represented in the Collection. 
Nautilus Cantabrigiensis, Foord. 
1877. Nautilus, n, sp., Jiikes-Browue, Supplementary Notes on the 
Fauna of the Cambridge Greensand, Quart. Journ. Geol. Soc. 
vol. xxxiii. p. 489. 
Sp. Char. Cast oblong, umbilicated ; chambers few, only twelve 
being generally visible, and the last ones being as high as they are 
wide ; the septa are consequently wide apart ; sinuate and bent 
back near the umbilicus ; siphuncle situated outside the centre and 
about one third of the distance from the outer edge ^ 
“ This is the commonest form of Nautilm among the Cambridge 
coprolites but does not seem to agree with any previously described. 
^ Mem. Geol. Surv. of India — Palaeont. Indica — i. Cretaceous Cephalopoda 
of Southern India, 1861, p. 23, pi. xii. figs. 2, 3. 
2 Ibid. 1865, p. 205. 
^ The siphuncle is seen in two of the specimens in the British Museum, 
No. 68510 a and No. C. 874. 
* The following account of the Cambridge Greensand or “ Coprolite Bed ” is 
extracted from Penning and Jukes-Browne’s “Geology of the Neighbourhood 
of Cambridge,” 1881, p. 24 (Mem. Geol. Surv. England and Wales); — “This 
basement bed has long been known by the name of the ‘ Cambridge Green- 
sand’ or ‘Coprolite Bed.’ It is a clayey marl, to which a greenish colour 
and a sandy texture is imparted by the presence of numerous Glauconite grains, 
