A Contribution to the Lower Devonian Faunas of Maryland 7 



onal, each alternate joint provided with a node or short spine at the 

 margin." Wachsmuth and Springer, 1897. 



Two imperfect specimens from the Oriskany comprise all that the 

 writer has seen. The species is well marked and although the specimens 

 are imperfect they are readily recognized as belonging to this species. 

 Hall's type of this, as of all other species of this genus, was found near 

 Cumberland. 



Occurrence. — Oriskany Formation, Eidgely Member. Cumberland. 



Collection. — U. S. National Museum. 



Technocrinus (?) LEPiDus n. sp, 

 Plate XXXVII, Figs. 3-5 ; Plate XXXVIII, Fig. 1 ; Plate XXXIX 



Description. — Specimen large; calyx cup-shaped, depressed dorsally, 

 somewhat constricted at arm bases ; plates generally highly convex, 

 smooth. Basals not discernible in specimens observed; costals 2, second 

 pentagonal and axial ; distichals 2x10, the first usually hexagonal, the 

 second pentagonal, hexagonal or heptagonal and axillary; palmars 2 x 20, 

 of irregular shape, each second one bearing an arm ; intercostals 3, one in 

 the first series, hexagonal, situated above and between the radials and 

 between the first costals, two in the second series, situated between the 

 second and costals, and above and between the second costals and the 

 intervening intercostal of the first series ; interdistichals several (7-10), of 

 irregular size, shape and arrangement, all smaller than the corresponding 

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

 arrangement and shape; interaxillaries 3, with supplementary smaller 

 ones between the 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 carry^ing 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 



