h%% PALitONTOLOGY OF NEW-YORK. 



Dnintania Aasbtiis. 



Plate LXXV. Fro. 2; and Plate LXXVI. Fia. 1 - 9. 

 .^dpkiH hdiolUs : Golittxb, Annu41 Report on the Palasontology of New- York, 1841, i>. 43. 



Mr. CoitfRAD has given the follo-\ving description of the species cited 

 above : 

 " BccKLER rostrated : l-ibs with a wide shallow sulcus ; a few of the ribs 



" each with a large tubercle ; two rows of tubercles on the middle lobe, 



" obsolete on some of the ribs. Tail consisting of a long, round, finely 



" tuberculated spine." 



To which may be added : 



Head crescentiform, with the posterior angles extended into long mucro- 

 nate points, and the frontal limb projected into a broad and somewhat 

 flattened spiniform process which is bifurcated at the extremity. 



Glabelia moderately convex ; length from the occipital furrow to the 

 iinterior margin about one-fourth greater than the width of the frontal 

 lobe, which is transversely oval, being about three-fourths as long as 

 wide ; transverse furrows strongly marked, the anterior and central 

 ones not strongly marked across the middle : anterior lobes broad and 

 prominent, widening towards the eyes, the middle ones of nearly the 

 same width throughout ; the central space between the inner extremi- 

 ties of the anterior and middle lobes nearly flat : posterior lobes a 

 little pointed forwards in the middle. Occipital furrow shallow, its 

 continuation in the posterior furrow of the cheeks bding wider and 

 deeper. 



Eyes large and prominent, the outer rim much elevated ftb6v6 the central 

 portion : a strongly marked furrow around the base, which separates 

 it from the adjacent surface of the cheek. Entire number of ranges of 

 lenses, laterally, about forty, which, in the highest part of the eye, 

 have an elevation of ten or twelve lenses ; the entire number between 

 350 and 400 (no specimen being sufficiently per^ecSt t6 cburit them all). 



