250 Systematic Paleontology 



Occurrence. — Oriskany Formation, Eidgely Member. Cumberland. 



CoUeciion. — U. S. National Museum. 



Family MELANOCRINIDAE 



Genus TECHNOCRINUS Hall 



Technocrinus sculptus (Hall) 

 Plate XXXVI, Figs. 10, 11 



Mariacrinus (Technocrinus) sculptus Hall, 1859, Pal. N. Y., vol. iii, p. 143, 

 pi. Ixxxvi, figs. 13, 14, 1861. 



Description. — " Body unknown. Base urn-shaped, gradually expand- 

 ing above, abruptly expanded at the junction of the column : cavity for 

 the insertion of the column large. Basal plates marked by strong sharp 

 ridges, which diverge from the base to the upper margins, and unite upon 

 the lines in the direction from the angles to the base of the plates." Hall, 

 1859. 



This species is known only from the basal and first radial plates. The 

 writer has not seen it. 



Occurrence. — Oriskany Formation, Eidgely Member. Cumberland 

 (fide Hall). 



Collection. — American Museum of Natural History. 



Technocrinus striatus (Hall) 



Plate XXXVI, Figs. 8, 9 



Mariacrinus (Technocrinus) striatus Hall, 1859, Pal. N. Y., vol. iii, p. 142, 

 pl. Ixxxvi, figs. 12 and 5-11, 1861. 



Description. — " Body unknown. Surface of plates marked by strong 

 elevated strise, diverging from the center. Basal plates four, wider than 

 long, small. First radial plates wider than high. Column small." 

 Hall, 1859. 



This species is known only from the basal and first radial plates. The 

 writer has not seen it. 



Occurrence. — Oriskany Formation, Eidgely Member. Cumberland 

 (fide Hall). 



Collection. — American Museum of Natural Histoi^. 



