442 PROCEEDINGS OF TFIE ACADEMY OF [May, 



PLEUROOERID^. 

 Goniobasis proxima symmetrica (Hakl.). 



Paint Rock creek, X. C. This was the only species of fluviatile 

 niolhisk found during the trip. 



Xo indications whatever of Unionidre or Pleuroceridre were found 

 iu the French Broad at Paint Rock. 



EXPLANATION OF PLATES XXIV AND XXV. 



[f:uuATA. — References to "Plate XXIII" on pages 431 and 4o3 

 should read Plate XA'/K] 



Plate XXIV, Figs. 1, 2, ^.— Vitrea cliiujmnni Dall. Potato Top, 

 Black Mts., N. C. No. 83,262 A. N. S. P. 



Figs. 4, 5, Q. — Vitrea mnattui P. and W. Mt. ]Mitcliell, N. C. No. 

 83.201 A. N. S. P. 



Flo's. 7, 8, Q.— Vitrea approxima W. and P. Mt. Mitchell, N. C. No. 

 83.261) A. N. S. P. 



Figs. 10, 11. 12.— Vitrea Jiammonis (Strom). MohaAvk, N. Y. No. 

 53 A. N. S. P. 



Plate XXV, Figs. 1, 2.—Gustrodonta gularis theloides (A. D. B.). 

 BlutF Mt., N. C. No. 83,263 A. N. S. P. 



Fig. 'd. — G. (J. theloides. Aperture of a specimen from A. D. Brown's 

 collection. No. 50,914 A. N. S. P. 



Fig. 4. — G. (/. theloides. Basal view of a young shell from Bluff ]Mt., 

 N. C. No. 83, 263 A. N. S. P. 



Figs. 5, 6, l.—G. (J. decassata P. and V. Three views of the type, Mt. 

 Mitchell, N. C. No. 83,265 A. N. S. P. 



Fig. 8. — G. g. decussata. Much enlarged view of a segment of the 

 base^of a young specimen from BluflF Mt., N. C. No. 83,264 A. N. S. P. 



Fig. 9. — G. (J. decxissata. Another specimen from the type lot, Mt. 

 Mitchell. No. 83,205 A. N. S. P. 



Figs. 10, 11, 12.— G. g. lawce (W. G. B.). Three views of the type 

 specimen. Diam. 8 mm. No. 294 of the " Binney and Bland Collec- 

 tion." American Museum of Natural History, N. Y. 



Fig. 13.— Cr. g. dcenssata. Young shell from Bluff Mt., N. C. Same 

 specimen shown in fig. 8. 



Figs. 14, 15.— (?. gAaioce. Young shell from North side of the French 

 Broad river at Paint Rock, N. C. No. 83,206 A. N. S. P. 



Fiss. 16, \1.— G. q. lawee. Adult shell of the laminate form. North 

 side French Broad fiver, Paint Rock, N. C. No. 83,266 A. N. S. P. 



