Agel. 



Agelacrinus hamiltonensis. Vanuxem, page 306, fig. 80. 



I Hamilton forma- 

 tion, YIIL c— For 

 another species of 

 this curious and 

 beautiful kind of 

 early echinoderm 



] holbrooM^ see U. P. 

 James, in Journal 

 of the Cincinnati 

 Soc. Nat. Hist., vol. 



X, No. 1, 1888. 



Agnostus acadicus {Agnostus siniilis) Walcott. Bulletin 



LA 2^ 



2& 



No. 10, U.S. G.S., page 

 plate 2, fig. 2a, a head shield 

 enlarged two diameters ; and 

 figs. 2, 25, 2(?, tail pieces (py- 

 gidia) enlarged three diam- 

 eters. (See Hartt's descriptions in Dawson's Acadian Ge- 

 ology, 2d ed. pp. 655, 656, 1868.— L. C. Lower Cambrian 

 (Saint John) formation, New Brunswick, (c. Agnostus cam- 

 hrensis, Hicks, Q. J. E. S. London, XXVII, 400, 1871; Me- 

 nevian formation; also Agnostus Irevifrons, Angelid, Pal. 

 Scan. p. 6, 1852, in Norway rocks ; also, Agnostus interger^ 

 Beyr. Sil. Syst. Boheme, I, p. 900, 1852.— White's Agnostus 

 inter str ictus, E. & S. W. 100th M. IV, p. 38, in Cambrian 

 rocks, Utah, almost identical with it.) 



Agnostus lattts See Beyrichia lata. V. a. 

 Agnostics lohatus. See Microdiscus lobatus. See Bey- 

 Ttchia lolata. See Appendix. 

 Agnostus nobilis. (From Ford's original figure, 1872, in 

 Am. Jour. Sci. [3] III, 421, figs 1. 2.) Wal- 

 cott, Bulletin 30, U. S. G. S page 150, plate 

 16, fig. 7. (Original specimen lost). M. C. 

 Middle Cambrian limestone bed east of Troy, 

 N. Y., containing also Olenellus asaphoides., 

 Agnostus lohatus, Ololella coelata, and Obolella 

 desquarnata, (Compare Hall's Agnostus parilis, 

 of the Wisconsin Potsdam formation, except in size.) 



MC." PI. 16 



