222 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 

 194) 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 grow 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. 



*In this reprint it has been considered unnecessary to reproduce the Artotypes referred to. 



I 



