PLATE CXVIa. 



CORNULITES SERPULARIUS. 

 Page 21 



Fig. 1. (= f. 5, Sow., loc. cit.)* A. [Brachiopod (Athyris?) having two young: individuals of the fossil 

 attached to its surface throughout their entire length. 



Fig. 2. (= f. 5a, Sow., loc. cit.) A group of three individuals in the young stale, attached for their entire 

 length to the shell of a Brachiopod 1 



Fig. 3. (= f. 6, Sow., loc. cit.) A groupof two adnascent individuals in an advanced stage of growth, show- 

 ing them to be composed of successive rings, as described in the text. The sin fare has been cut 

 or worn so as to expose the interior cavity. 



Fig. 4. (= f. 7, Sow., loc. cit.) The distal or free portion of a tube, the upper portion of which is dis- 

 tinctly striate,!, while the test has been partially removed, showing the interior rings or cups ; 

 the cast of the interior. 



Fig. 5. (f. = 8, Sow., loc. cit.) A more mature example, preserving the curved initial extremity. The 

 test has been partially removed by weathering or maceration. 



Fig. 6. (f. = [8], Sow., loc. cit.) A larger individual, in a similar condition to the preceding, wanting the 

 the initial extremity. 



Fig. 7. (f. = 8, Sow., loc. cit.) A longitudinal section of a tube, showing, on the inner side, the project- 

 ing edges of the successive rings, and the incipient and developed tissue of the walls. 



Fig. 8. (f. = 9, Sow., loc. cit.) A portion of a mature tube partially exfoliated, showing the vesicular 

 structure on the right side, with the external striated test upon the upper left-hand side. 



CORNULITES ARCUATUS. 



Page 19. 

 Fig. 9. Cornulites areuatus, Conrad. Jour. Acad. Nat. Sci., vol. viii, p. 276, [pi. xvii, fig. S. 1842. (A 

 copy of Mr. Conrad's figure.) 



Near Albion (Wayne county, in error), N. Y. 

 From the Niagara limestone. 



Cornulites Clinton i. 



Page 18. 



Corrected from C. flexuosus (Pal. N. Y., vol. ii, p. 98) in Twenty-eighth Kept. N. Y. 

 State Mns. Nat. Hist, p. 184. 1879. 



Fig. 10. (Fig. 12a, vol. ii, loc. cit.) A mature example, preserving the initial point, and the test, which has 



been somewhat macerated. 

 Fig. 11. (Fig. 12c, vol. ii, loc. cit.) A cast of the interior of a large individual, where the initial point is 



wanting. 



Cornulites bellastriatus, n. sp. 



Page 20. 



Cornulites , Pal. N. Y., vol. ii, p. 353, pi. lxxxv, figs. 15 and lt>. 



Fig. 12. An adult specimen, imperfect toward the base, preserving the test and showing the transverse 



and longitudinal strise with obsolescent ann illations. 

 Fig. 13. An adult, nearly entire individual, preserving the striated test with distinct annulations. The 



specimen is compressed toward the outer extremity. 



* The figures are reversed from the position given by Mr. Sowerby, in order to have them conform to the 

 illustrations on plates cxv and cxvi, and in accordance with their natural position or mode of growth from 

 the narrow apex to the aperture. 



