476 
bic stage than in the specimens in the museum at Ottawa, but the 
sides are rounder at the stages of growth observed. 
The siphuncle is similarly situated and somewhat smaller than in 
insolens. 
The diameter of the largest and most perfect specimen was about 
150 mm. ‘The transverse diameter of the fourth whorl at the 
whole diameter of 75 mm. was 42 mm., and the ventro-dorsal 25 
mm. The diameter of the siphuncle at this stage was 4 mm. 
The diameter of this organ increased slightly to the living cham- 
ber, but probably did not exceed 6 or 7 mm. On the last quarter 
(probably of the fourth whorl), just before the living chamber was 
reached, the siphuncle was found to be misplaced, as is not uncom- 
mon in species from this locality. This organ has very thick walls 
and often maintains its form and proportions when unsupported by 
the septa, although thrown out of place by the movements in the 
matrix, as happened in this case. It is thrown over to the left and 
arches towards the venter rising above the centre. The specimen 
being excavated, however, it was found to be in its usual place, 
a few septa younger than the point at which it appeared. The 
entrance. into the living chamber was not, however, satisfactorily 
observed, the septum being broken by compression, although the 
entrance seemed to be in the usual place, between the centre and 
the dorsum. ‘The septa were about 6 mm. apart as measured on 
this siphuncle. 
The shell was very thick near the aperture, which was similar to 
that of zzsolens, but appeared to have a narrower hyponomic sinus 
than in that species. The way in which the lateral crests run for- 
wards to the lines of involution indicate that there was a crest on 
the dorsum also, but this could not be observed. 
LITOCERES INSOLENS (?). 
NAUTILUS INSOLENS (?) Bill. (Pa/. Foss., i, p. 258). Pl. vi, Figs. 
Q-ITI, nat. size. 
Loc., Gargamelle Cove, W. Coast Newfoundland. 
This species is so similar in dimensions and characteristics to the 
one described by Billings and was found so near his locality that 
I have ventured to apply the same name, although he does not dis- 
tinctly state whether the siphuncle was dorsad or ventrad of the 
centre. 
