432 TERRESTRIAL AIR-BREATHING MOLLUSKS. 



Agatina fuscata, RAFINESQUE, is probably not found in the United States. (See 



Terr. Moll., I. 50.) See also ante, p. 410. 



To the Terrestrial Mollusks, I. p. 348, et seq., and IV. p. 152, 1 I refer for in- 

 formation regarding the following species of RAFINESQUE : 



Zolotrema, RAF. Omphalina cuprea, RAF. 



Hemiloma ovata, RAF. Stenostoma convcxa, RAF. 



Menomphis, RAF. Stenotrema convexa, RAF. 



Aplodon nodosum, RAF. Toxostoma glolularis, RAF. 



Chimotrema planiuscula, RAF. Toxotrcma globularis, RAF. 



Hemiloma avara, RAF. Toxotrema complanata, RAF. 



Mcsodon maculata, RAF. Triodopsis lunula, RAF. 



MesompMx, RAF. Trophodon, RAF. 



Odomphium, RAF. Xolotrcma lunula, RAF. 



Odotropis, RAF. Xolotrema triodo2)sis, RAF. 

 Omphalina, RAF. 



Oxyurus quadrilus, RAF., is a typographical error of my own in my "Notes," 

 No. 4. No such name was proposed by him. 



FOSSIL HELICID^E. 



Anomphalus Meekii, BRADLEY. Coal of Illinois. See Am. Journ. of Science, 



August, 1872. 

 Ccelocentrum irregulare, GABB. (see L. & Fr.-W. Sh., I. 23), and Berendtia Tay- 



lori, PFR. (see same, 189). Lower California species are said to have been 



found fossil at Carson Valley, Nevada, latitude 39, by Dr. J. G. COOPER, Am. 



Journ. Conch., IV. 217. 



VIII. SUPPLEMENT. 



Zonites Whitneyi. (See p. 113.) There are 24124 teeth on the 

 lingual membrane, all of the usual type ; four of them are laterals. 



Mesodon devia. (See p. 337.) The typical form has the same type of 

 dentition as the Salmon River variety. It is figured on PL XVI. Fig. S. There 

 are 28 1 28 teeth. The thirteenth lateral has its inner cutting cusp split. 

 The jaw has fourteen ribs. The genital system has a small, globular genital 

 bladder on a long stout duct, which tapers greatly towards the bladder. The 

 penis sac is stout, long, cylindrical, with both vas deferens and retractor muscle 

 entering its apex; the ovary is long and narrow. There are no accessory 



organs. 



I am indebted to Mr. Henry Hemphill for the opportunity of examining the 

 above species. 



1 See also BINNEY'S and TRYON'S ed. of RAFINESQUE'S Complete Writings. 



