8 A Contribution to the Lower Devonian Faunas of Maryland 



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

 be correct. In one specimen the arms measure more than 22 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 Hal) 



Calceocrinus marylandicus 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 

 barely discernible. Anterior basal U-shaped, truncate anteriorly. Lateral 

 radials large, irregularly hexagonal, strongly convex and cinctured trans- 

 versely. Anterior radials small as compared with the laterals, triangular, 

 not in contact, apices ending near the bottom of a deep circular depression. 

 The first brachial of the anterior ray large, wider than high, quadrangular, 

 its lower angles in contact with the lateral radials and lower lateral 

 brachials. The lower lateral brachials two, separated by depression, but 

 evidently joined by syzygy, the suture lines, however, being discernible; 

 the lower one much wider than high, quadrangular, separated from the 

 radial below by a gaping suture; the upper one pentagonal, axial, sup- 



