APPENDIX TO VIYIPARID^, Etc. 



Since the first portion of the preceding pages was printed the 

 following additional species Lave been re- 

 ceived : — 



Poiuus depressa. (Page 3.) 



I am now able to give a figure of the jaws ^ . _, ,_ ^^^^ 



o o •! Jaws of Pomus depresaa. 



of this species. «. Top view. 6. side view. 



ValTata pupoidea, Gould. (Page 13.) 



A better view of this species than Fig. 19 is here 



Fig. 223. 



A 



given. ^ ^^j^,„,„ 



Page 14. The description of Valvata humeralis pupoidea. 

 should have been accredited to Say. 



Vivipara coiitectoides. (Page 23.) 



The figure of this si)ecies here given is to be 

 substituted for that given on page 23, which 

 incorrectly shows but three revolving bands. 

 There are invariably four on all the specimens 

 I have examined. 



I neglected to state in the text that I did not 

 adopt linearis as the specific name in this case, 

 because it was probably a typographical error 

 for lineata in Kiister's monograph, and because 

 it does not apply to the shell in question. 



Fig. 224. 



Vivipara inornata.— Shell minutely perforated, globose-conic, 

 thin, smooth, polished, lines' of growth extremely delicate on the body 

 whirl, imperceptible above ; color uniformly greenish or pale olive, una- 

 dorned with any revolving lines ; the suture impressed, spire short, conical ; 



( 113 ) 



