1G5 



ECHINODEEMATA. 



No. 825. G-alerites albogalerus, Lam. 



Pyramidal variety. This lofty, almost turreted, form, 

 with marginal anus, is from the Upper Chalk, Kent, Eng- 

 land, and now in the Ward Museum, University of Ro- 

 chester. Price, $0.30. 



No. 826. Galerites albogalerus, Lam. 



Pyramidal variety ; inner mould. From the same locality and Museum as 

 the preceding. Price, $0.20. 



No. 827. G-alerites albogalerus, Lam. 



Spherical variety. From the same locality and Museum as the preceding. 



Price, $0.25. 



No. 828. Hyboclypus sandalinus, Merian. 



From the Callovian (Middle Oolite), France. Price, $0.25. 



No. 829. Pygaster semisulcatus, Wright. 



This Echinus is depressed, with a subpentagonal contour; the anus is 

 very large, and situated on the superior face. From the Lower Oolite, Chelten- 

 ham, England. Price, $0.85. 



Spatangidse. 

 No. 830. Ananchytes ovata, Lam. 



A Spatangoid, distinguished by having 

 a high, conical form, and much compressed 

 laterally. This genus, says Desor, is the 

 most characteristic of all fossil Echini, 

 and the one most useful to Geologists, not 

 only from its frequent occurrence, but also 

 from its well defined characters. It is from 

 the Chalk of Meudon, France, and belongs 

 to the private Geological Cabinet of Mr. 

 Ward, Rochester. 



Price, $0.50. 



No. 831. Ananchytes ovata, Lam. 



(Var. earinata, Defr.) From the same locality and Museum as the preceding. 



Price, $0.40. 

 No. 832. Ananchytes ovata, Lam. 



(Var. earinata, Defr.) Inner mold. From the same locality as the preceding, 

 and now in the Ward Museum, University of Rochester. Price, $0.30. 



No. 833. Ananchytes ovata, Lam. 



(Var. gibba, Lam.) From the Chalk of Kent, England, and now in the private 

 Cabinet of Mr. Ward, Rochester. Price, $0.50. 



