Mr. A. White on a new suhgenus of Calandridse. * * 107 
species it resembles in the shape of the aperture. It is also 
allied to Nautilus Gh'avesianus, d^Orb. (Terr. Juras. t. 38), in 
the laterally compressed volutions ; but that species is furnished 
with a sharp keel, whereas in N. Saxbii the keel is truncated. 
The Nautilus Saxbii closely resembles the N. mesodicus 
(Quenstedt) *, but differs from it in being of less breadth, having 
a smaller umbilicus, and in the greater number of the septa. 
This shell is readily distinguished from the other lower green- 
sand species by its more compressed form, angular volutions, 
truncate back and somewhat sagittate aperture, and more sinu- 
ous septa ; in which latter character it resembles some J urassic 
species, as Nautilus biangalatus, N. sinuatus and N. triangularis 
of the inferior oolite. 
In the individual specimen here described, the last septum is 
filled with iron pyrites, presenting a contrast to the remaining 
septa, which are occupied by crystallized carbonate of lime. The 
body chamber is filled with the sandy matrix of the bed from 
which it was obtained. 
Locality. From the Lower Greensand, at Atherfield, Isle of 
Wight; in the lowest bed of the Crackers^ group (No. 4 of 
the Table ” in Geol. Journal, vol. iii.)t. 
This interesting species of Nautilus, which I believe is hitherto 
undescribed, was put into my hands by Dr. Fitton, F.R.S., to 
whom it had been sent, with other rare specimens, by S. M. 
Saxby, Esq. of Mountfield near Bonchurch, Isle of AAight, from 
his valuable collection of Isle of Wight fossils. 
XI. — Description of an apparently new subgenus of Calandridse 
from the Philippine Islands. By Adam White, F.L.S., As- 
sistant Zool. Dep. British Museum. 
Calandra. 
{Hijposarothra, White.) 
Antennae rather strong, springing from a depression situated a 
little behind the middle of the side portion of the beak, and 
if stretched out would reach slightly beyond the end of the 
beak ; basal joint nearly as long as the funiculus and last 
joint taken together; first and second joint of the funieulus 
* “Die Cephalopoden des Salzkammergutes, &c. von' Franz R. von 
Hauer ” (tab. 10. f. 4, 5). Vienna, 1846. 
t In vol. iii. of the Geological .Journal the name is N. Saxhianus. The 
genitive termination is here adopted, on Dr. Fitton’s suggestion, as accord- 
ing with the other new names {Ammonites Hamhrovii^ &c.) in the “ Cata- 
logue ” of part of the Society’s Museum (Journal, vol. i.). 
