574 PAL&0NTOLOGICAL REPORT OF GEOLOGICAL SURVEY. 



Position and locality. Characteristic of coal No. 9, and found in 

 great abundance in the black shale forming its roof, at the Curlew and 

 Kentucky Coal Company's mines, Union county ; at Lewisport, Han- 

 cock county, Kentucky; and at the Saline and Shawneetown Compa- 

 ny's mines, Gallatin county, Illinois. 



GONIATITES NOLINENSIS. Cox. 

 (PI. X, fig. 1, quarter view natural size; fig. la, outline of dorsal aeptu ;» fig. 16, outline of 



ventral septu.) 



Discoidal; one and a half to two whorls, increasing in the propor- 

 tion of .-j%° 7 of an inch to l.-iVo inches; periphery very convex; sides 

 obtusely rounded; umbilicus large, round, vertically walled; dorsal 

 lobe and sinus dart shaped, first lateral lobe elliptically pointed, a little 

 longer and broader than the dorsal ; lateral sinus angular, acutely 

 pointed, about twice as broad, and one-third longer than the dorsal; 

 second lateral lobe subovately rounded ; ventral sinus longer and more 

 acute than the corresponding dorsal lobe; second ventral lobe obtuse- 

 ly rounded, and broader than the lateral sinus, with which it corres- 

 ponds; mouth moderately transverse; greatest diameter 2. T y-g- inches; 

 width of umbilicus . T Vo of an inch; transverse diameter of mouth 

 I-tVo inches; vertical hight l. T Vo inches. 



It is closely related to G. crenistria, Philip but diners in having the 

 last chamber less transverse; umbilicus larger, and the dorsal lobe 

 acutely pointed ; not bifid, as in the Q. crenistria. The specimens 

 found are not well enough preserved to show any ornaments that may 

 have existed on the .shell, they are all, converted into oxide of iron; and 

 like their associates Mferratus, ; nob. andiVi canaliculars,, nob.h&ve 

 been used at Nolin Furnace for the manufacture; of iron. 



Position and locality. Nolin Iron Works Edmonson county, 'Ken- 

 tucky, in ( a thin stratum of , ferruginous fire-clay with fragments of 

 coal closely resembling charcoal, about one hundred, feet above the 

 conglomerate. 



NAUTILUS FERRATUS. Cox. 

 (PI. X, fig 2, half natural size; fig. 2a section natural size. 



Globose, convoluted, whorls two, embracing, increasing in width in 

 the proportion of l.-jVo- inches to 2. ^'^ inches, regularly rounded on 



'Explanation of the nomenclature. Fig. la, the arrow is in the dorsal lobe, and points 

 to the mouth in the direction of increase; d, dorsal lobe; d, s, dorsal sinus; 2', first lateral 

 lobe; I, «', first lateral sinus; I", second lateral lobe. Fig. lb, », s, ventral sinus; v, I', first 

 ventral lobe; », «". sesond ventral sinus; e, 2", second ventral lobe. 



