78 
PALEONTOLOGY OF NEW YORK. 
Lichas (Conolichas) Ekiopis. 
PLATE XIX A, FIGS. 2-13, 15,16. 
Lichas armatus, Hall. Descr. New Species of Fossils, etc., p. 81. 1861. 
Lichas armatus, Hall. Fifteenth Kept. N. Y. State Cab. Nat. Hist., p. 109. 1862. 
Lichas Lriopis, Hall. Sixteenth Kept. N. Y. State Cab. Nat. Hist., p. 226. 1863. 
Acidaspis (Terataspis) Eriopis, Hall. Illnstrations of Devonian Fossils, pi. xix, figs. 4-7, 10, 11. 1876. 
Acidaspis ? { Terataspis) sp. ?, Hall. Illnstrations of Devonian Fossils, pi. xix, fig. 12. 1876. 
Cephalon one-half as long as wide ; intra-sutural portion sub-quadrate. 
Glabella as broad as long; frontal lobe elongate-pyriform, anterior half 
convex, tumid and sloping abruptly to the frontal margin, slightly constricted 
at one-half its length and abruptly depressed upon the posterior half to the 
occipital furrow. The first and second pairs of lateral lobes are coalesced by 
the obsolescence of the second pair of lateral furrows, forming a single pair 
of strong, elevated, elongate lobes, reaching from the margin to the occipital 
furrow, and most convex posteriorly. Third glabellar lobes obsolete. The 
longitudinal furrow formed by the union of the first and third pair of trans¬ 
verse furrows is broad and deep, the marginal and palpebral furrows less 
conspicuous. Occipital furrow relatively narrow ; occipital ring broad, and 
showing evidence of having borne two strong central spines. 
Facial sutures normal. 
Cheeks abruptly deflected beneath the orbital lobe to the occipital ring; the 
free portions slender, narrowing rapidly to the genal angles and thence pro¬ 
duced into long incurving spines. 
Eyes prominent, crescentic; palpebrum relatively large; palpebral lobe 
inconspicuous. 
Thorax not observed. 
Pygidia found in association with the head above described, and bearing the 
following characters, are referred to this species; Outline nearly semicircular. 
Axis having a width, on the anterior margin, equal to one-third the width of 
the shield; convex, short, becoming rapidly obsolete beyond its most elevated 
point. It bears in addition to the well-marked articulating ring, one low 
annulation and traces of a second. Behind this is a strong, erect spine, 
