Matt. 



382 



UC 



margin; Fig. 10, partition (septum) across inner chamber (as 

 at S', fig. la, pi. 33.); Fig. 11, section of apex broken off at 

 septa in inner chamber. Fig. 12, inner surface of chamber of 

 habitation, enlarged. — On plate 23, are figs. 1, 1^, \b casts of 

 chamber of habitation and inner chambers; septa, at *', s' .; fig. 

 Ic, end view of conical specimen, showing cast of an inner 

 chamber, etc. Other figures omitted. — Lower Cambrian^ L, C. 



Mazonia woodiana, Meek and Worthen. A spider from 

 Mazon Or. Geol. Sur. 111. Vol. 3. Coal measures^ XIII, 



Meekella striatocostata. Plicatula striatocostata^ Oox, 



Geol. Sur. Ken- 

 tucky, Vol. 3, 

 1857, page 568, 

 plate 8, fig. 7.) 

 Worthen and 



'^^mmm^^ ''^\'^mmm^^ pi ^^ms^oc St. John,Trans. 



)^^J^4»^^^ ISiftS^^^^^^P^ ^l' ^^im^^O Chicago Acad. 



Sci. Vol. 1, 1867.— Collett's Indiana 1883, plate 26, figs. 12, 13, 

 14, natural size adult. — Found by Stevenson in the Coal Meas- 

 ures of S. W. Pa. KKK, p. ^^^.—XIIL 



Megalichthys jaw and teeth figured by Hall, in Geol. W. 

 Div. N. Y., 1843, p. 282. from Ohemung- Cats kill red leds. 

 Pal. Ohio, Vol. 1, plate 40, fig. 3, Za, See Appendix, Prof 

 Hall at first classified the animal by the scales, Sauritolepis^^ 

 (Alb. Inst. 1840) ; afterwards by the fin, Sauripteris (Geol. N. 

 Y. 1843.) But it is a fish. 



