139 



CONO. 



Wisconsin, &c., 1852, pp. 123, 127, etc. — See Appendix for a re- 

 markable structure in anthracite, excessively rare, which must 

 be referred to the same cause, but cannot be explained by ref- 

 erence to any known form, organic or inorganic. — See also an 

 excellent figure of Oone-in-cone^ in Hall, Geol. Fourth Dist. 

 N. Y., 1843, page 232. — Also good figures in WinchelPs Geol. 

 Studies, 1886, page 257. — See Appendix. 



Conocardium acadianum, Hartt, Dawson, Acadian Geol- 

 X!. c-i^ .mn^ "°- ogy, 1S68, page 305, fig. 110, a 



curious minute shell of the sub' 

 carhoniferous limestone of Nova 

 Scotia, with a long wing-like 

 siphonal tube ; figure enlarged 

 !x)aw.Aca_d-Gepl.i868. W- .P-Sos 10 times.—XL 



Conocardium'carinatum. (Hall, Trans. Alb. Inst. Vol. 4, 

 y^ 18 19 1856, from Warsaw group. Whitfield, 



Iri ^^ Bull. 3. Am. Mus. N. H. 1882, plate 7, figs. 



W 18, 19). Collett's Indiana Kt. 1882, page 

 lUi^W ^^}L30: 345, plate 30, fig. 18, 19, back and side 

 views of an imperfect specimen, enlarged twice. — Sub-carhoni- 

 ferous beds at Spergen hill, Ind. XI. 



Conocardium catastomum. (Hall, Trans. Alb. Inst. 1858, 



Vol. 4, from Warsaw group. Whit- 

 field Bull. 3, A. Mus. 1882, plate 7? 

 figs. 15, 16, 17). Collett's Indiana 

 Et. 1882, page 344, plate 30, figs. 15, 

 17, side views of two specimens, mag- 

 ^^r30 nified three times ; fig. 16, bottom 

 view of 15. — Sub-carboniferous.^ Spergen hill. XI. 



Conocardium cuneatum. (Hall, Trans. Alb. In. 4, 1856. 



Whitfield Bull. 3. Am. 

 Mus. 1882, plate 7). Col- 

 lett's Indiana Et. 1882, 

 page 345, plate 30, figs. 



___ „, _^ ™„«»^ 24, 25, side and back of 



^^ Bloommgton specimen; 

 fig. 26 bottom of Spergen hill specimen ; all magniiied twice. 

 Sub-carboniferous strata at various places. XI 



Conocardium cuneus. {Pleurorhynchus cuneus^ Conrad, 

 1840, An. Et. N. Y., Up. Held.) —Specimen 804-96, from Fel- 



