A Contribution to the Lower Devonian Faunas of Maryland 5 



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

 writer has not seen it. 



Occurrence. — Oriskany Formation, Ridgely 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, 

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



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

 elevated striae, 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, Ridgely Member. Cumberland 

 (fide Hall). 



Collection. — American Museum of Natural History. 



Technocrinus andrewsi (Hall) 

 Plate XXXVIII, Fig. 2 



Mariacrinus {Technocrinus) andrewsi Hall, 1859, Pal. N. Y., vol. iii, p. 141, 



pl. Ixxxvi, figs. 1-4, 1861. 

 Technocrinus andrewsi Wachsmuth and Springer, 1897, Mem. Mus. Comp. 



Zool., No. 20, p. 306, pl. xxiv, fig. 3. 



Description. — "A rather large species. Calyx to the arm bases hemi- 

 spherical ; plates moderately convex, surrounded by sets of short marginal 

 ridges passing inward, three to four to each side of the plate, and by small 

 pits along the sutures ; the center of the plates perfectly smooth. Basals 

 wider than high. Radials large, about as long as wide. First costals of the 

 form of the radials, but considerably smaller; the second still smaller, 

 narrower as well as shorter. Distichals one, axillary; supporting in the 

 calyx two rather large palmars, followed by several cuneate, interlocking 



