~ 
TO GEOLOGY. Siz 
tion, however, from what remains, to consider it distinct ; 
the folds, the striz and general form differing from any of 
the species here described. 
P. Childreni.* Plate 4. Fig. 132. 
Description. Shell fusiform, turrited, transversely striate, 
granulate on the larger part of the whorl; substance of 
the shell rather thick; spire elevated, obtuse at apex ; 
whorls about nine, subcanaliculate above; mouth long 
and narrow, one third the length of the shell. 
Length .9, Breadth .3, of an inch. 
Observations. This is a beautiful species, distinct by its 
granulations, the row of which is disposed to be double. 
About the middle of the whorl the striz are large. On 
the superior part there are two or three minute ones. 
P. Lesueurii.t Plate 4. Fig. 133. 
Description. Shell fusiform, turrited, covered with 
closely set transverse strize, which are cut by indistinct 
longitudinal ones ; substance of the shell rather thick ; 
spire elevated, acute at apex ; whorls about nine, subcan- 
aliculate above ; mouth long and narrow, about two fifths 
the length of the shell. 
Length 1.1, Breadth .4, of an inch. 
* Named after the secretary of the Royal Society, eminent for his 
acquirements in science. 
t Named after the naturalist M. Lesueur, the companion of Peron. 
s 
