﻿LAMPSILIS 



9t 



Maroarita ( Unto) anodontoides Lea, Syn., 1836, p. 35 ; 1838, 

 p. 24. 



Margaron (Unto) anodontoides Lea, Syn. 1852. p. 36; 1870, 

 p. 58. 



Lmipsilis anodontoides Baker, Moll. Chicago, Pt. I, 1898, p. 



100, pi. X, figs. I, 2.— Smith, Bull. U. S. Fish Com.', 1899, p. 



200, pi. Lxxvrir.— Simpson, Syn., 1900, p. 543.— Ortmann, 



Ann. Car. Mus., VIII, 1912, p. 346, fig. 25. 

 Unio teres Say, Am. Conch., VI, 1834.— Conrad, Monog., VI. 



1836, p. 52, pi. xxviii.— KusTER, Conch. Cab. Unio, 1854, p. 



68, pi. XVII, figs. I, 4. 



Var. Horidensis (Lea). 



Shell smaller, thinner, less inflated and in every way more 

 delicate than the type, sometimes with a few faint rays ; teeth 

 more compressed ; female shell narrowed in front and having 

 the marsupial swelling more near to the center of the shell and 

 more elongated than in the type. 



Length (male) 85, height 41, diam. 26 mm. 



Length (female) 63, height 33, diam. 19 mm. 



Southern Alabama and Georgia to central Florida. 



Type locality, Choctawhatchee River, W. Fla. 

 Unio floridensis Lea, Tr. Am. Phil. Soc, X, 1852, p. 274, pi. 



XXI, fig. 31 ; Obs., V, 1852, p. 30, pi. XXI, fig. 31. 



Margaron (Unio) Horidensis Lea, Syn., 1852, p. 39; 1870, p., 

 62. 



Lampsilis anodontoides var. floridensis Simpson, Syn., 1900. p. 



.544- 



An abundant, widespread, variable form. The variety flori- 

 densis is smaller, generally lighter, and more delicate in every 

 way than the type; the marsupial swelling is not placed so 

 near to the posterior end and the front end of the shell is often 

 narrower. It extends north into southern Georgia, and delicate 

 specimens are found along the Gulf Coast into Texas. At 

 Mier. Mexico, a rather short variety is found. 



The species is solider, larger and higher in proportion than 

 L. fallaeiosa, is not quite so inflated as that species, and is gen- 



