﻿232 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



regards the present specimen as abnormal in development, or a mon- 

 strosity, but thinks it best to give it a name, for easy reference. 

 Were it not for the very close identity in all specific characters save 

 the abnormal position of the basal pectinirhomb, one would be led 

 to distinguish P. abiiormalis as the genotype of a new genus. That 

 the position of the basal pectinirhomb is abnormal is shown by the 

 shape of plate I, but especially by plate 6, which is notched to re- 

 ceive all the anterior edge of plate I. 



Formation and locality. — The holotype was found by the writer, 

 associated with P. gordoni, in the quarries near Keyser, West Vir- 

 ginia. 



Cat. number 35,068, U. S. N. M. 



PSEUDOCRINITES CLAYPOLEI n. sp. 



(Plate XXXVII, figure i) 

 Length and width of the only specimen at hand 19 mm. ; thickness 

 about 12 mm. For form and ornamentation, see figure 1, plate 



XXXVII. 



The ambulacra extend around the entire periphery of the theca and 

 touch the slender column. All plates of the ambulacra and the 

 brachioles are gone, but the impressions left by the former indicate 

 that about 14 brachioles existed on either side of each ambulacrum. 



Basal pectinirhomb with 26 dichopores, that on plates 12 and 18 

 has 32, and on plates 14 and 15 about 42. 



Comparisons. — That this species is related to P. gordoni and P. 

 stcllatus is shown by the lens-shaped theca ; it differs from the former 

 in having fewer brachioles and in the vermicular sculpturing, while 

 the latter species has the plates marked by a few strong radiating 

 ridges. 



Formation and locality. — In the lower portion of the Manlius at 

 Clark's Mills, near New Bloomfield, Pennsylvania, associated with 

 Sphczrocystites bloomHeldensis. The writer's attention was directed 

 to this locality on reading an account of it in Report FF of the 

 Second Geological Survey of Pennsylvania (p. 182), by the late 

 Professor Edward W. Claypole, for whom this species is named. 



Cat. number 35,066, U. S. N. M. 



PSEUDOCRINITES STELLATUS Schuchert 

 (Plate XXXV, figures 8, 9; Plate XXXIX, figure 7) 

 Pseudocrinites stcllatus Schuchert, Amer. Geol., xxxii, 1903, p. 236. 

 Length of a large specimen 25 mm.; breadth 2^ mm.; depth about 

 15 mm. Air. J hartley has a specimen ^2 mm. long and 30 mm. wide. 

 For form <d theca and its sculpturing, see figure 7, plate XXXIX. 



