86 
tab. XVI. f. 1.) froma more perfect specimen, as far as 
regards that part ; but there seems to be less of the shell 
attached to it. Is it possible that it belongs to the pre- 
sent species, and not to the one he refers it to? especially 
as it appears, that only some specimens were thus 
inflated. We are not acquainted with the tube of Q. 
gigantea. 
