G 
292, APPENDIX. 
sack being turned up and marked by a wire. This sack is sup- 
plied by the vessel which passes through the orifices of the cup 
‘shaped bone mentioned on page 169. 
Figure 4, plate 10, plate 11 as well as figures 5 and 6, plate 12 
are taken from one fish, but not the fish from which my notes 
have been made and represented in the other plates. Between 
the bones protecting the notochord in these specimens, I find the 
following difference: in those of plate 1 the anterior bone (page 
164) did not touch the posterior bone (page 175) but was separate 
some distance from it, the space between them being occupied by 
fascia ; and the posterior bone was much shorter in proportion 
and much more strongly curved than that of the fish represented 
in plate 11. 
The Artotypes illustrating this paper, are the work of Mr. W. D. O'Donnell, to whom the 
writer is much indebted for the care which he has bestowed upon them. 
Dr. Sommers presented a specimen of Trillium sessile, collected 
by Miss Godfrey, of Clementsport, Digby County; he believed it 
was the first recorded instance of finding of the species in our 
Province. Trillium cerectum, T. erythrocarpum grows abundantly 
in many localities. T. cernuum not so frequent, and now Miss 
Godfrey has the honor of adding a fourth to the species of 
Trillium growing with us. 
