XAUTTLIDJ.. 
2(‘.a 
‘‘ undistiuguishable in most of the principal characters ’’ from 
xV. suhlceuir/atus, d’Orb. ; and after remarking upon some slight 
differences, he concludes that the Indian forms are mere varieties of 
the Prench and English ones, with the latter of which they, how- 
ever, agree best. 
Stoliczka makes no mention of the septation of the Indian 
variety of X. Boiichardianus, though by this character it may be 
distinguished from X. sphcericus, Eorbes, and X. Hiudeyanus^ 
Blanford, both of which have wider septa than the form under dis- 
cussion. 
There seems much reason to doubt whether the form described 
and figured by Pictet and Campiche under the name Boiichardianus 
be the same as d’Orbigny’s; and that those authors themselves 
doubted the identity of the Swiss with the Trench species is 
apparent from the remarks they make upon it, observing upon the 
variations in the place of the siphuncle in the Swiss form, and 
adding, “ There is perhaps in this an indication of a new species, 
but we have not been able to connect these modifications with any 
other physical character in the species : it is a point for consider- 
ation, but the material of the Sainte-Croix beds is insufficient to 
settle it.” 
The specimen from Xorlington, Sussex, figured by Man tell in his 
‘ Fossils of the South Downs ’ under the name of X, ineqiialis, is 
too immature to pronounce any decided opinion upon, but it may 
belong to the present species. The character upon which Mantell 
founded his species, viz. the diminution of the septa in depth, as 
they approach the aperture, is one whieh cannot be regarded as of 
any specific importance, since it is common to all the iSTautili. A 
large fragment (No. C. 576), in which a few septa and part of the 
body-chamber are preserved, may possibly belong to the present 
species. There are indications of fine and regular striations upon 
this specimen. 
Horizon, Gault. Cambridge Greensand. Arialur Group of India 
(=Fpper Chalk of England, Senonian of Franee). 
Localities. British. Near Folkestone, Kent ; Norlington, near 
Ringmer, Sussex (Gault); Cambridge (Cambridge Greensand). — 
Foreign. Escragnolles (Yar), Perte-du-Rhone (Ain), France (Gault) ; 
Pondicherry, India (Arialur Group). 
Fairly well represented in the Collection. One of the specimens 
of the Indian variety (No. 83624) was presented by the Hon. R. 
Marsh am. 
