294 
TfAXrilLOlDEA. 
Nautilus Huxley anus 9 Blanford. 
186] . Nautilus Huxley anus, Blanford, Mera.Geol. Surv. India— Palaeont. 
Indica — Fossil Cephalopoda of the Cretaceous Rocks of Southern 
India, p. 19, pi. vii. ff. 3, 4 ; pi. viii. ff. 1, 1 «, 2, 3 ; pi. ix. ff. 1-4. 
1866. Nautilus Huxleyanus, Stoliczka, ibid. p. 205. 
1879. Nautilus' Huxleyanus, H. B. Medlicott and AV. T. Blanford, A 
Manual of the Geology of India, pt. i. p. 278. 
Char. “ Shell inflated, smooth, or striated minutely with lines 
of growth ; in some specimens these become more strongly marked, 
and occasionally form ridges as in the specimen figured ; umbilicus 
scarcely impressed, closed by the overlap of the outer whorl ; ventral 
surface broad, evenly rounded, marked in some well-preserved 
casts with a fine filiform ridge. Aperture orbicular, moderate, and 
excavated by the interior whorl. . . . Septa very concave, with 
slightly flexuous margins, few and distant; from 13 to 16 in one 
whorl. Siphiincle at about | the height of the septum. It is not 
unfrequently laterally excentric, viz. to the right or left of the 
median line.” {Blanford.) 
Remarks. Mr. Blanford further observes that the present species 
resembles “ in general external form, as well as in the form of the 
septa, and in the external position of the siphuncle,” N. Icevigatus, 
d’Orbigny, but that “ certain minor characters are seen to be so 
prevalent [in a large series of specimens] as to stamp the present as 
a distinct species. These are : the great breadth of the chambers 
or, in other words, the small number of septa in the whorl, the 
greater excen tricity of the siphuncle, and the tendency to form ribs 
or ridges of growth, manifested by some specimens, a tendency 
never seen in any specimens of N. hevigatus.” 
Horizon. Trichinopoly Group ( = Lower Chalk of England, Tura- 
nian of France). 
Locality. Garoodamungalum, Trichinopoly district, India. 
Represented in the Collection by a single example (IS’o. C. 2605), 
presented by Dr. Wm. King, Director of the Geological Survey of 
India. 
Nautilus Bayfieldi, Foord and G. C. Crick. 
1890. Nautilus Bayfieldi, Foord and G. C. Crick, Ann. Mag. Nat. 
Hist. ser. 6, vol. v. p. 405, f 7. 
B-p. Char. “ Shell somewhat compressed upon the sides and a - 
little flattened upon the periphery, the thickest part of the whorls 
being in the umbilical region. The umbilicus is rather small, with 
