;si'l,ATl-: XJCV— Continued. 



LEPTODESMA Orodes. 

 Page 206. 

 See Plate 90. 

 Pigs. 6, 9. Two left valves. The specimen fig. 9, is redrawn on pi. 90, tig-. 8. 

 Fig. Hi. A large left valve somewhat distorted by pressure and referred to the species with doubt. 

 Chemung group. Near Smethport, Pa. 



Leptodesma mytiliforme. 



Page 235. 

 See Plate 91. 

 Figs. 7. 11. A right and left valve. Other illustrations of these specimens are given on plate 91, tigs. 22 

 and 24, Bhowingmore clearly the specific characters 

 Chemung group. Near Smethport, Pa. 



Leptodesma Maclurii. 



Page 228. 

 See Plate 91. 

 Fig. 8. A right valve. See fig. 14, pi. 91, for another figure of this specimen. 

 Fig. 13. A left valve. Another figure of the specimen is given on plate 91, fig. 13. 

 Chemung group. Near Smethport, Pa. 



Leptodesma rude. 



Pago Oil 

 See Plate 91. 

 Fig. 12. The left valve described. See li--. :i. pi. 91. 



Chemung group. Near Smethport, Pa. 



Glyptodesma ERECTUM. 



Page 153. 

 See Plates II. 12. 13, Slj and 87. 

 Fig. 14. An internal mould of the upper portion of a left valve showing the lateral teeth and striated 

 ligamental area. The large sear on the post-umbonal slope was probably made by the 

 attachment of a Crania to the shell and covers a portion of the large muscular impression. 

 , Hamilton group. From a boulder near Nichols, 2V. Y. 



Fig. 15. An internal east of a right valve, showing the pallia] line anil imprint of a strong posterior tooth. 



Hamilton group. Otsego Co., N. Y. 

 Figs. 16, 17. A right and a left valve as preserved in a cherty limestone. 

 Hamilton group. Indiana. 



Pal.eopinna FLABELEA. 



Page HO. 

 See Plate 87. 

 Fig. is. The I. 'ft valve described. See plate 87, tig. 4. 



Oriskany sandstone. Schoharie, N. Y. 



PaE.Ei >PI\iVA RECURVA. 

 Page '211. 

 19. A view of a large imperfect loft valve. 



Opper Helderberg group. Stafford, ffenesei Co., N. Y. 



Kit 



