APPENDIX TO YIVIPARID.E, ETa 



115 



Fit'. 



2Ithintlw dtcci 



carina, reaching to, and modifying tlie peristome ; aperture higlier than 

 broad, roundly lunate, produced below ; bluish within ; 

 peristome simple, acute, sinuous, angular above at the 

 termination of the carina. Greater diameter, includ- 

 ing aperture, 22 mill., length 35 mill. ; length of the 

 aperture 20 mill. , diameter 10 millimetres. 

 Operculum horny, concentric. 

 Melantho decampi, W. G. BixxEY, Am. 

 Journ. Couch. I, 49, ISCiS, pi. vii, 

 f. 2, 3. 



Huntsville or Stevenson, Alabama: 

 r>r. W. H. DeCamp, 1st Mirhiffan Operculum 



_^ , _ . ■^ ° of Mtlantho 



\ ol. Engineers. dtcampu 



This species was given me by Mr. 

 A. 0. Currier, of Grand Rapids, Michigan, who suggested its 

 bearing the name of its discoverer. 



About a dozen specimens were collected. All 

 but the one drawn in Fig. 22T could not be distin- 

 guished from Ilelania without the presence of the 

 operculum, thus furnishing another example of the 

 impossibility of ascertaining from the shell alone 

 the generic position of some species. It is probable 

 that other vspecies of Melantho have been described 

 as 3Ielanise. 



Fig. 227 was photographed from nature on wood. 

 It represents the largest and oldest specimen. Fig. 229 is drawn 

 from a younger individual. 



Fig. 229. 



Cat. No., No. of Sp. 



Locality. 



From whom received. 



Remarks. 



9309 



Huntsville or Steven- 

 [son, Ala. 



Type. Fiir. 2'27-9. 



Gillia 



Fig. 230. 



From Stephenson, Ala., and Powel's River, Tenn., j ^ 

 has lately been received a new species of Gillia, here 

 fig:ured. 



GilHa 



On page G.3. Paludina altiJis should have been referred to 



GiJlia. 

 Paludina pallida, subglobosa, fontinalis, and 



isogona to Somatogyrus isogonus. 

 Paludina lustrica to Pomatiopsis. 



