Maryland Geological Survey 253 



distichals, some iiiucli smaller; interpalmars about 5, variable in size, 

 arrangement and shape; intera.xillaries 3, with supplementary smaller 

 ones between tl)e bases of the arms, the first interaxillary situated above 

 and between the first costals, the second and third succeeding in order, 

 each limited laterally by the palmars; between the bases of each pair of 

 arms originating from the same costal is one or more small plates. 



Arms 20, biserial, extremely long and carrying multitudinous long 

 pinnules, composed of several acutely spheroid alternating plates which 

 are followed by regularly arranged alternating cuneiform plates. The 

 lower plates of the calyx cannot be made out with certainty in any of the 

 specimens at hand. The genus Technocrinus has been found so far only 

 in the Oriskany of Maryland. To it are referred provisionally certain 

 large, pinnuliferous specimens from the region of Hancock. These are 

 all in the form of natural moulds of the exterior. The interior casts 

 are ah'o found, but in the latter no arrangement of plates can be made 

 out. The chief difference between the genus as defined by Wachsmuth and 

 Springer and the specimens here referred to it, is in the distichals. When, 

 however, it is remembered that the definition of the genus was based on 

 two species, it is not surprising that such deviations should arise as other 

 species are discovered. Mr. Springer, to whom the specimens under con- 

 sideration were submitted, would refer them provisionally to this genus 

 and tlie writer is of the opinion that further collections will show this to 

 be correct. In one specimen the arms measure more than 23 cm. in length. 



Occurrence. — Oriskany Formation, Eidgely Member. Cacapon 

 Bridge; Pennsylvania Sand Quarry, 3 miles north of Berkeley Springs, 

 West Virginia, 



Collection. — Maryland Geological Survey. 



Order FISTULATA 

 Family CALCEOCRINIDAE 



Genus CALCEOCRINUS Hall 

 Calceocrincs marylan Ulcus n. sp. 



Plate XL, Figs. 1-3 

 Description. — Body robust, laterally compressed. Basal disk of medium 

 size, highly convex. Basals three, probably anchylosed, the suture lines 



