Hyol. 296 



Hyolithes ligea ( Theca ligea, Hall), Villa. See Appendix 

 Hyolithes micans. See Hyolithellus micans. L. G, 

 Hyolithes micmac, (Matthew, 1884, Mss.) Walcott, Bull. 

 4.x* ' ! ?<•• Z. U. S. G. S. No. 10, page 21, plate 



c -sss^g;^^^!;^^^^^^^ 2, fig. 6, type specimen, enlarged 

 ^"^^^'^•^'—^-^^h^^^ tioice. — From Middle Cambrian 



(Saint John) formation, in company with Microdiscus puncta- 



tus. New Brunswick. M. C, 



Hyolithes neapolis. Clark, Bull. 16, U. S. G. S. 1885, p. 



cik. B.I6. ■""Mm^ --'mi^ig^i^^ ^ strong cross lines; no lines 



lengthwise; a handsome species of the Naples ( Up, Oenesee)^ 

 differing from those of the Chemung above, and Hamilton 

 below in its surface marking.— F///^— Note. A dorsal and 

 ventral valve, very small, and not sculptured, from the ''upper 

 black band," may be another species. 



Hyolithes parviusculus. {Ihecaparviuscula^^dW^ Geo- 

 logical Report on Wisconsin, 1862, from Hudson River {Lor- 

 raine) formation Illb.—See reference in Pal. N. Y. Vol. 5, 

 part 2, 1879, pp. 192, 193; and in Walcott's Bull, 30, U. S. S. S. 

 1886, p. 132. — See Appendix for -figures^ &c. 



Hyolithes primordialis ? ( Theca primordialis. Hall, 

 1861, from Potsdam sandstone of the Missis- 

 M.C. Pl.15,4/ sippi Valley; probably the same as forma 

 ^^,,a,j3gjgjffl^gp^^^ from the base of the Calciferous sandstone on 

 ^^^^^"^"^ the Escanaba river, indicated by Hall in Fos- 

 ter & Whitney's Report in Lake Superior district, 1851. See 

 Hall, Pal. N. Y. V. 2, page 192.)— Walcott, in Bulletin U. S.G. 

 S. No. 30, page 141, plate 13, fig. 4, magniiied Hve times^ cites 

 a poorly preserved form, with the same apical angle (15^) and 

 a similar outline of cross section, as occurring in Lower Cam- 

 hrian (Georgian) reddish, sandy, magnesian limestone, a mile 

 east of Highgate Springs, Vt., in company with Olenellus 

 thompsoni and Ftychoparia adamsi. Also in purplish sand- 

 stone above the Olenellus led east of Swanton, Vt.— Note. 

 For Hyolithes primordialis=Theca gregarius of Hall, see 

 Walcott, Bull. 30, page 132.)— Z. C 



