New Species of Crinoidea and other Fossils, 223 



Genus — DALMANIA Emmerich, 

 Dalmania breviceps n. sp. 



Plate 8, figs. 15, 16. 



Body broadly ovate in general form, having its greatest width across 

 the base of the cephalic shield. Head subcrescentiforra, the anterior 

 margin very slightly produced in front of the glabella. Frontal lobe 

 of glabella tran sversely elliptical, the breadth nearly twice as great 

 as the length, separated from the anterior lobe by deep narrow 

 furrows. Anterior lobe transversely subovate, prominent ; middle 

 and posterior lobes obsolete ; occipital ring narrow, distinctly defined. 



Eyes very prominent, with five lenses in the central vertical range, 

 but the number of vertical ranges cannot be determined ; palpebral 

 lobe depressed. The outer border of the movable cheeks is thickened 

 and rounded, and the space between the border and the eye depressed. 

 The posterior spines long and broad, reaching to the sixth thoracic 



segment. 



Thorax with the axial lobe highly convex and the lateral lobes 

 strongly geniculate, subequal in width, rapidly tapering posteriorly 

 from the fourth or fifth segment. Segments curved forward on the 

 top of the axial lobe, and the furrows on the pleura strongly marked. 



Pygidium obtusely pointed behind, the lateral borders inclosing an 

 angle of about 120°, the anterior border rounded ; the number of 

 articulations not clearly defined, but apparently numbering about 

 ten or twelve, besides the terminal one: those of the lateral lobes 

 have been more numerous. 



The entire surface, so far as can be seen on the specimen, has been 

 finely pustulose. 



This species differs from all others described, in the short cephalic 

 shield, and in the absence of middle and posterior glabellar lobes. In 

 general form, it resembles Dalmania callicephala of the irenton 

 limestone of New York ; but differs conspicuously in having spmes 

 on the posterior angles of the cephalic shield. 



Formation and locality. In shales of the Hudson-river group, 

 Lebanon, Ohio. From Mr. J. Kelly O'Neall. 



Genus— PKOETUS Steininger. 



Proetus parviuscultjs n. sp. 



Plate 8, fig. 14. 



Body, in general form, broadly ovate, widest across the base of the 



cephalic shield. Head sublunate, produced into long sharp spines at 



