388 PALEOZOIC PALEONTOLOGY. 
one which has been observed, and it exhibits the characters of the 
species as well as they can be seen in any New Jersey specimen so 
far collected. The thorax and pygiduim have not been observed. 
DALMANITES sp. cf. D. ANCHIOPS (Green). 
Plate LIII., Fig. 17. 
1888. Dalmanites (Chasmops) anchiops Hall and Clarke, Pal. N. Y., 
vol. VIL., p. 59, pl. 9, figs. 1-6, 10, 12-13, pl. 10, figs. 1-14. 
A single specimen of the pygidium of a large species of Dal- 
manites has been collected at the Greenwood lake locality in the 
Monroe shale. It is imperfect and distorted, but seems to resemble 
D. anchiops more closely than any other species. The axis tapers 
rather gradually and is divided into fifteen or sixteen segments. The 
plure are flattened and are marked by about twelve segments. The ter- 
minal spine of the pygidium is not preserved in the New Jersey speci- 
men, but its posterior extremity is imperfect and the spine may have 
been destroyed. The specimen is in such a condition of preservation 
that this identification can in all events be considered only as pro- 
visional. 
