484 University of Kansas Geological Survey. 



VERMES. 



? Serpula tenuicarinata M. & H. Plate lxxxvi, fig. 1. 



? Serpula tenuicarinatus M. & H., 1857, Proc. Acad. Nat. Sci. Phil., p. 134; 



Meek, 1876, U. S. Geol. Surv. Terr., vol. ix, p. 507, pi. vi, f. 1. 

 f Serpula tenuicarinata Stanton, 1893, Bull. U. S. Geol. Surv. No. 106, p. 53, 



pi. i, f. 2. 



Revised description: "Tubes growing in groups, or rarely 

 single, nearly cylindrical, increasing very gradually in size, 

 irregularly curved, but apparently never spirally coiled, attached 

 by the under side throughout most of the entire length, upper 

 side having a distinct, rather sharply elevated, flexuous, longi- 

 tudinal carina ; surface smooth ; carina sometimes wavy. 



"Length of species unknown; length of longest fragment, 

 fifteen mm. ; average transverse diameter, less than two mm. 



"As entire specimens of this species have not been seen it is 

 somewhat doubtfully referred to this genus." 



The University specimens consist of a fragmentary mass of 

 these forms attached to a portion of a shell of a large Inoceramus 

 collected by the writer from the Ornithostoma beds in the Nio- 

 brara area of Jewell county. 



Serpula intrica White. Plate c, fig. 1. 



Serpula intrica White, 1876, U. S. Geol. and Geog. Surv. Terr. West 100th 

 Mer., vol. iv, p. 205, pi. xv, f. 5a; Stanton, 1893, Bull. U. S. Geol. Surv., p. 

 53, pi. i, f. 1. 



Original description: "Tubes small, slender, cylindrical, 

 smooth, very long and very tortuous, not perceptibly increasing 

 in size, so far as our examples show, but neither the distal nor 

 proximal extremity of the tube has been found unbroken. Diam- 

 eter of the tube a little more than one mm. This species is re- 

 markable for the great length and uniform size of the tubes and 

 for the intricacy of their contortion." 



A single coiled specimen attached to the flat surface of a por- 

 tion of a large Inoceramus, and surrounded by small, broken frag- 

 ments of tubes, is doubtfully referred to this species. In general 

 appearance this specimen resembles S. tenuicarinata, and may 

 belong to that species. The absence of a carina and its coiled 



