Maryland Geological Survey 251 



Teciinocrinds andrewsi (Hall) 

 Plate XXXVIII, Fig. 2 



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



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

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



Zool., No. 20, p. 306, pi. 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 eacli 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 radial?, 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 

 free plates, and these by two rows of subquadrangular pieces, united by a 

 sharply zigzag suture. Arms four to the ray, strong, fiat, and of almost 

 uniform width throughout. Pinnules contiguous. Interbrachials four 

 or five : 1, 2, 1, 1, all comparatively large. Column round, large, tapering; 

 the joints rather long and slightly rounded exteriorly." Wachsmuth and 

 Springer, 1897. 



The writer has seen only the exterior mould of the lower part of the 

 calyx of an individual of this species. It is larger than Hall's type, but 

 the plates that can be made out indicate that it belongs to this species. 

 The type came from Cumberhmd. 



Occurrence. — Oriskany Formation, Eidgely Member. Cumberland 

 (fide Hall), Hancock. 



CoUsction. — Marjdand Geological Survey. 



Technocrinus spinulosus (Hall) 

 Plate XXXVII, Figs. 1, 2 



Mariacrinus (Technocrinus) spinulosus Hall, 1859, Pal. N. Y., vol. iii, p. 140, 



pi. Ixxxv, flgs. 1-18, 1861. 

 Technocrinus spinulosus "Wachsmuth and Springer, 1897, Mem. Mus. Compt. 



Zool., No. 20, p. 305, pl. xxii, fig. 3. 



Description. — " Calyx subglobose, the arm bases slightly contracting. 

 Plates of the dorsal cup marked by a central spme or node, surrounded 



