Carboniferous Trilobites. 85 



poslerioily ; ring's from 18 to 14, sub-granulose, separated by distinctly im- 

 pressed furrows ; lateral lobes angulated near the middle, flattened above 

 and on the sides, well defined from the margin by a shallow^ but distinct 

 furrow ; segments 7. rounded, separated by distinct linear sulci ; margin 

 moderately wide and regularly convex. 



Diniensions. — Length, .28 inch ; width, .25 ; height, .11 ; height of axial 

 lobe, .04 ; length of same, .19. 



Geological iiosition n/id locality. — Upper Coal Measures, Clifton Park. 

 Kansas 



PHII.LIPSIA MAJOR, Sliumard. 



Plate 8, Fig. 14. 



Phillips'ia major, Sliumard, 1858, Trans. Acad Sci. St. Louis, VoL I, p. 226, 

 Phillipsia major, Meek, 1872, U. S. Geol. Sur. Neb., p. 288, pL 3, figs. 2, 



a, b, c. 

 Schiel, 1855, Rep. Expl. Sur. Mississippi River to Pacific Ocean, Vol. 



II, p. 108, pi. 1, fig. 11. 

 Phillipsia major, Herrick, 1887, Bull. Sci. Lab. Denison Univ., II., p. 60. 



Head and thorax unknown. Pygidium large, elevated, approaching to 

 semi elliptical, a little widerthan long ; surface smooth or very finely punc- 

 tate ; outlines of lateral edges sinuate, margin broad, particularly towards 

 the posterior extremities : axial lobe very much elevated, gently tapering, 

 forming about five sixths of the total length, not so wide as the lateral lobe, 

 rather strongly arched longitudinally, sides w4th a broad, shallow groove 

 running their whole length ; rings 23, very strongly arched from side to 

 side, angulated in the lateral depressions, and their extremities directed 

 obliquely backw^ards ; the first six or seven from the front are very flat in 

 a longitudinal direction, and are separated from each other by fine scarcely 

 impressed transverse lines or furrows. Posterior to these, the furrows 

 are distinctly impressed to the extremitj^ of the lobe, while the rings gradu- 

 ally become rounded on the dorsum, but on the sides they still continue 

 flattened. Lateral lobes moderately convex, obtusely angulated in front ; 

 segments 12, rounded, slightly sinuate, simple ; furrow^s rather strongly 

 impressed, except the last tw^o, which are nearly obsolete. 



Dimensions. — Width of pygidium, 1^^^ inch ; length, l^^^ ; length of 

 axial lobe, .93 ; width of same at anterior extremity, .80, 



Geological position and locality. — Upper Coal Measures, Clinton Co., Mis- 

 souri ; Valley of the Verdigris River, 12 miles south of Lecompton on the 

 Santa Fe road, Kansas ; also at Kansas City, Missouri, and Bellevue, 

 Nebraska. 



We have examined a smaller specimen of this species from 

 Kansas City, now in the Columbia College collection. This 



