﻿ANODONTA 393, 



Margaron (Anodonta) hallenheckii Lea, Syn., 1870, p. 78. 



Anodonta gesncrii Lea, Pr. Ac. N. Sci. Phila., X, 1858, p. 139: 

 Jl. Ac. N. Sci. Phila., I\', 1859, p. 231, pi. xxxi, fig. 109. — 

 Obs., VII, 1859, p. 49, pi. XXXI, fig. 109. — Clessin, Conch. 

 Cab. Ano., 1873, p. 95, pi. xxviii, figs, i, 2. 



Anodon gesnerii Sowerby, Conch. Icon., XVII, 1867, pi. vn, 



fig- 1.5- 

 Margaron (Anodonta) gesnerii Lea, Syn., 1870, p. 78. 

 Anodonta gessneri P.t;tel, Conch. Sam., Ill, 1890, p. 179. 



A magnificent shell, when fully developed, but it is often 

 apparently stunted and, when it is, it becomes somewhat rhom- 

 boid and occasionally constricted at the middle of the base line. 

 It was a stunted shell, which has evidently been injured along 

 the middle of the base when it was quite young, that Lea took 

 for his type of A. hallenheckii. Afterwards he named a fine 

 young specimen A. gesnerii. 



Anodonta doliaris Lea. 



Shell decidedly rhomboid, a little narrowed in front, inflated, 

 strong, somewhat inequilateral, with very full, high beaks, 

 their sculpture not known ; posterior ridge high and angled ; 

 dorsal wing moderate ; posterior slope truncated, the tnmca- 

 tion ending in a faint biangulation behind near the base ; an- 

 terior end rounded, but somewhat cut away below ; epidermis 

 smooth and shining, yellowish-green, rayed ; cavity of the 

 beaks deep and wide; nacre pale flesh-color, iridescent. 



Length 120, height 72, diam. 56 mm. 



Type locality, Stewart's Mill Dam, Union County. North 

 Carolina. 

 Anodonta dolcaris Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p. 



193- 



Anodonta doliaris Lea, Jl. Ac. N. Sci. Phila., \'I, 1866, p. 24, 

 pi. vni. fig. 23 : Obs., XI, 1867, p. 28, pi. viii, fig. 23.— Cles- 

 sin. Conch. Cab. Ano., 1874, p. 130, pi. xiji, figs, i, 2. — 

 Simpson. Syn., 1900. p. 634. 



Margaron (Anodonta) doliaris Lea, Syn.. 1870, p. 81. 



