148 PROCEEDINGS OP THE ACADEMY OP [1884. 



Central thii'd occupied by five or six longitudinal rows of cells, 

 which continue throughout its entire length ; from these the 

 lateral cells are directed in nearly straight lines obliquely out- 

 wards and upwards towards the margins, at an acute angle. Cells 

 twice as long or longer than their width and are arranged irregu- 

 larly in the rows, without any apparent order. 



The length of the specimen is two and one-fourth inches, 

 which was not its entire length, several fragments having been 

 lost off either end. 



From the compact, fine-grained Niagara Transition Group 

 limestone, which was described by me in the American Naturalist, 

 Sept., 1882, at Gasport. 



Niagara Group. 



Eucalyptocrinus inconspectus (n. sp.). PI. Ill, fig. 5. 



Calyx large, cup-shaped, wide, upper part with perpendicular 

 sides ; base rounding, obconical with a small excavation to 

 receive the column. 



Column and arms unknown. 



Surface finely rugose ; rugse giving evidence of irregular radia- 

 tions from the centre of the larger plates. 



Basals concealed within the depression to receive the column. 

 First radials medium, rapidly expanding. Second radials large, 

 as high as wide. The rest of the plates, excepting the elongate 

 interradials and interbrachials, wider than high. Radial plates, 

 with the exception of the second, flattened or even slightly 

 depressed, slightly wider than high. 



This species may be distinguished from E. a-assus by the, 

 comparatively, very shallow basal excavation which receives the 

 column ; also by the finely rugose surface-markings, the rounding 

 base and nearly parallel sides at the upper part of the calyx. 

 And from £J. decorus by the longer calyx and surface-markings. 



From the Niagara limestone at Lockport. 



Cornulites contractus (n. sp.). PI. Ill, fig. 6. 



Shell much elongated, cylindrical or subcylindrical, very 

 gradually tapering ; regularly sharply annulate ; longitudinally 

 finely striate. 



Growing attached to foreign bodies or in groups when young. 



Annulations very sharply defined, equidistant ; about five to 



