xxiv APPENDIX. 



253. Impressions of raindrops, mucli more spread, "Wcthersfield, Connecticni 

 V25i. Impressions of raindrops, with fine ripple marks, Wcthersfield, Con- 

 necticut. 

 \/255. Partial concretion, Wethersfield, Connecticut. 

 V'25G. Partial concretion, Wethersfield, Connecticut. 

 257. Brontozoum giganteum, in relief, Northampton. 



V 258. Cast of Brontozoum giganteum. Original specimen from Wethersfield, 



Connecticut. 



259. Cast of Tridentipes elcgans, from Gill. 



2G0. Mould of Polemarchus gigas. 



261. Cast of Brontozoum exsertum. 



2G2. Cast of Brontozoum exsertum. 



263. Mould of Brontozoum exsertum. 

 \/2Qi. Mould of Brontozoum validum. 



265. Cast of a row of Grallator cuneatus, from South Hadley. (Plate 39, 

 figure 25.) 

 \ 268. Cast of Anisopus Deweyanus. (Plate 39, figure 26.) 

 y^67. Cast of Chiraaera barrattii. 



2G8. Mould of Ancyropus heteroclitus. (Plate 30, fig. 2. Plate 34, fig. 14.) 

 V269. Mould of Ancyropus heteroclitus. 



v'270. Mould of Ilarpedactylus gracilis. (Plate 3i, figure 13.) 

 y^271. Mould of Triaenopus leptodactylus. 



V 272. Cast of a double track of Triaenopus leptodactylus. 



273. Cast of Macropterna divaricans. ( V ) (Plate 31, figures 15, 16.) 

 27-1. Mould of Plectropterna minitans. 

 ^ 275. Ti'iaenopus leptodactylus, (Mould ) 



276. Triaenopus leptodactylus, (Mould.) 



277. Mould of a small slab of tracks. 



V 278. Mould of Argozoum dispari-digitatum. 



V 279. Mould of Tridentipes elogans. 



280. Mould of Tridentipes elcgans. 



281. Cast of Platypterna Ueaniana. 

 ,. 282. Cast of Platypterna Deaniana. 



Y 283. Cast of Platypterna Deaniana. 

 281. Cast of Platypterna Deaniana. 



285. Cast of Ornithopus gallinaceus. 



286. Cast of Platypterna tenuis. (Plate 43, figures 33, 34.) 



V 287. Cast of Argozoum pari-digitatum. 



/288. Cast of Platypterna dclicatula. (Plate 45, figure 40.) 

 V'289. Cast of two tracks of Cheirotheroides pilulatus. 



V 290. Variegated sandstone, Weslfield. 

 291. Variegated sandstone, Westfield. 



" 292. Variegated sandstone, Westfield. 



V293. Fu'joides, Greenfield. 



\/291. Ciathropteris rectius2ulus. E. Hitchcock, Jr., Mount Tom, Easthampton. 



^295. Clatliropteris rectiusjulus. E. I litchcock, Jr., Mount Tom, Easthampton. 



V293. Fucoid changed to limestone, Springfield, Water Shops. 



» 297. Batrachoidoi nidlfijans, mad nests of tadpoles, South Hadley Canal. 



