130 Thirty- Second Report on the State Museum. 



the length of the spine in large individuals equals the length of the head. 

 The glabella in very young individuals is more convex, the glabellar furrows 

 more strongly impressed, and the spine projecting from the occipital ring shorter 

 and less obliquely inclined backward. Dorsal furrows equally impressed at 

 the sides and front of the glabella. Facial suture, curving slightly outward 

 from the frontal margin, passes directly to the anterior angles of the palpebral 

 lobe opposite the anterior glabellar furrow, thence curving to the posterior angle 

 of the palpebral lobe, it extends obliquely outward to the lateral margin of the 

 posterior limb. 



Fixed cheeks narrow ; frontal limb extending equal to one-half the length of 

 the glabella, sloping somewhat abruptly to a comparatively broad, thickened 

 margin ; posterior limb narrow, elongate, with a strongly defined furrow along 

 the center. Palpebral lobe separated from the fixed cheeks by a sigmoid 

 groove, which unites anteriorly with the dorsal furrow. Surface of glabella and 

 fixed cheeks granulose ; on the frontal limb the granules are so arranged as to 

 give the appearance of lines running from the dorsal furrow to the broad mar- 

 gin, which has lamellose striae subparallel to the margin. The largest head 

 obtained of this species is ten lines in length, with a spine of equal length pro- 

 jecting from the occipital ring. 



Formation and locality. Calciferous formation, Saratoga Co., N. Y. 



CONOCEPHALrTES* HARTTI Wolcott. 



Glabella truncato-conical, moderately convex ; width at base, excluding occip- 

 ital segment, equal to the length ; slightly rounded in front, with anterior lateral 

 angles abruptly rounded ; posterior glabellar furrow extends obliquely in about 

 one-third the distance across the glabella from each side, where it is united by 

 a transverse furrow ; middle furrow extends obliquely in from each side, but is 

 not united at the center ; anterior furrow obscurely defined opposite the anterior 

 angle of the palpebral lobe. Occipital furrow broad and not deeply impressed. 

 Occipital ring broad and slightly convex. Dorsal furrow well defined at the 

 sides and front. 



Facial suture curves slightly outward from the frontal margin, thence curving 

 in to the anterior angle of the palpebral lobe, passes to the posterior angle of 

 the palpebral lobe, and thence obliquely outward to the margin of the posterior 

 limb. 



Fixed cheeks comparatively broad ; frontal limb about one-fifth the length of 

 the head, curving gently from the dorsal furrow to the anterior margin ; poste- 

 rior limb elongate, with a strong furrow from the dorsal furrow to its extremity. 

 Palpebral lobe elongate, separated from the fixed cheeks by a groove within the 

 margin ; surface covered with fine lamellose striae. 



This species is much larger than C. calciferus ; the head described measures 

 seventeen lines in length by twenty-eight lines in breadth at the extremities of 

 the posterior limb. 



Formation and locality. Calciferous formation, Saratoga Co., N. Y. 



