A Contribution to the Lower Devonian Faunas of Maryland 51 



pustules. The crust is thin, and the interior of the glabella shows distinct 

 cavities corresponding to the external pustules. Hypostonia hastate ; the 

 buccal extremity obtuse, with a minute central point." Hall, 1859. 



Occurrence. — Helderberg Formation, New Scotland Member. 

 Devil's Backbone, Corriganville, Maryland; Cedar Cliff, West Virginia. 



Collections. — Maryland Geological Survey, U. S. National Museum. 



Phacops sp ? 

 Plate XCI, Figs. 5-7 



Description. — Two pygidia and a larger cephalon from the Oriskany 

 are too poorly preserved to determine or describe. They are associated 

 in the brown sandstone south of Cumberland and are assumed as belong- 

 ing to the same species. 



Occurrence. — Oriskany Formation, Eidgely Member. Cumberland. 



Collection. — George M. Eoeder. 



Genus DALMANITES Emmrich 



Dalmanites multiannulatus n. sp. 



Plate XCI, Figs. 12-15; Plate XCII; Plate XCIII, Fig. 1 



Description. — Complete cephalon not seen. Fragments show the follow- 

 ing characters: Convex, depressed; a broad concave border extends from 

 one genal angle to the other; within and concentric with this is a narrower 

 arched ridge; with and concentric with this ridge is a second concave 

 furrow narrower than the first; glabella large, becoming narrower pos- 

 teriorly ; frontal lobe depressed, broadly elliptical transversely, surrounded 

 by a broad, shallow furrow except at the posterior extremity; first lateral 

 lobe much larger than the others, subtriangular ; second lobe smaller than 

 the first and larger than the third; third lobe narrow, having about the 

 same width as the occipital ring; first and second lobes almost coalesced 

 towards their outward extremities, a slight tendency towards coalescence 

 likewise observable between the second and third lobes ; second and third 

 lobes extending obliquely inward and forward, tlie former l)eing more 

 oblique than the latter and both suddenly excavate at their inner ex- 

 tremities; eyes large, elevated, bounded (at least exteriorly) by a broad. 



