TUBICOLAR ANNELIDA. 
19 
scribed, was subsequently proved to be a Cornulites, the name of the former species 
was changed by its author to Clinioni. The Cornulites arcuatus of Conrad, from 
the Niagara limestone, in Orleans county, bears a close resemblance to speci¬ 
mens of C. Clintoni, and the type may represent a small individual which re¬ 
tains the substance of the tube. Mr. Conrad’s specimen is not accessible, but 
in the event of the identity of the species being proved, the specific term arcuatus 
will take precedence. 
Cornulites, sp. ? 
PLATE CXVI, FIGS. 24, 25. 
This specimen has the distant, regular annuli of C. distans, but the evidence 
of vertical striation is very obscure and unsatisfactory. The specimen is in a 
crystalline condition, and on this account the small portion of the test remain¬ 
ing preserves only obscure indications of its original condition. When examined 
by transmitted light, there is evidence of a distinct transverse line upon the 
annulations, above which the ring is darker, and below more translucent, appar¬ 
ently indicating the line of articulation of the joints of the tube. The apparent 
transverse striae on the figure are due to the texture of the surface, and are not 
organic markings. 
Clinton group. Near Lockport, Niagara county. 
Cornulites arcuatus. 
PLATE CXVI A, FIG. 9. 
Col'nulites arcuatus, Conkad. Jour. Acad. Nat. Sci., vol, viii, p. 276, pi. xvii, lig-. 8. 1842. 
Niagara group. Albion, Orleans county. 
Cornulites proprius. 
PLATE CXVI, PIGS. 1-21 
Cornulites proprius. Hall. Twenty-eighthRept. N. Y. State Mus. Nat. Hist., p. 182, pi. xxxi, figs. 1-13. 1879. 
The species referred to Cornulites -(= C. bellastriata) (Pal. N. Y., vol. ii, 
loc. cit.), is allied to C. proprius in its surface characters, although manifesting a 
tendency to greater regularity in the annuli, and having finer and less prominent 
longitudinal striations. It may, however, properly be regarded as the New York, 
representative of the Waldron species. The species C. contractus, Ringueberg 
(Proc. Acad. Nat. Sci., p. 148, pi. iii, figs. 6, 6a, 6b, 1884), from the Niagara group 
