PALEONTOLOGIC- CONTRIBUTIONS 89 



8 Serpulites longus nov. 

 Plate 29, figure 5 



A long narrow tube (about 120 mm long and uniformly about 

 2.7' mm wide) with thick marginal welts, smooth, flat surface and 

 purplish-brown phosphate of calcium test is before us from the 

 Keokuk beds at Crawfordsville, Ind. It is described in this place 

 because it shows the range of Serpulites, in the restricted sense 

 here used, into the Carboniferous era. The three species ( S . 

 hortonensis, S. annulatus and S . i n e i e g a n s ) 

 described and figured by Dawson in Acadian Geology, 1878, page 

 312, from the Carboniferous, do not belong here. 



The writer has also seen typical Serpulites from the Clinton 

 shales but they are at present not available. 



Agraulos cushingi nov. 

 Plate 30, figures 1-4 



Agraulos sp. nov. Cushing & Ruedemann. N. Y. State 

 Mus. Bui. 169, p. 38. 



Description. Cranidium small, subquadrangular in outline, 

 forming a' uniformly convex calotte. The frontal margin is very 

 long, strongly curved and reaching back at its ends to one-fourth 

 of the length of the cranidium. The suture line passes first slightly 

 inward, then backward along the eye lobe, and reaches the posterior 

 margin on a line a little inward of its anterior extremity. The 1 

 glabella is very broad, about half as wide as the cranidium, and 

 very flat, hardly, if at all, projecting above the cheeks, trapezoidal 

 in outline, extending two-thirds the length of the cranidium. The 

 glabellar furrows are straight and slightly converging forward, 

 deepest posteriorly and in mature exfoliated specimens fading into 

 the cranidial surface. In young specimens the frontal end is seen 

 to be squarish. The occipital groove is discernible only on the 

 glabella, where it sets off a depressed, flat occipital ring. The free 

 cheeks or other parts of the body have not been recognized. 



Horizon and locality. Theresa (Ozarkian) dolomite in cut of 

 Adirondack Railroad northwest of Saratoga. For a description of 

 the section where this form occurs, see New York State Museum 

 Bulletin 169, pages 36-37. It is there associated with Ptycho- 

 paria matheri Walcott, Agraulos cf. newtonensis 

 W e 1 1 e r and Lingulella (Lingulepis) acuminata 

 (Conrad). 



