Calymene Clintoni Vanuxeni. 



Ilemicrypturus Clintoni, Vanuxeni, 1842, Geol. N. Y., 3d Dist., p. 79. 

 Calymene Clintoni, Hall, 1852, Pal. N. Y., vol. ii, p. 298, pi. 66 a, figs. 5 a-d. 

 Calymene Clintoni, Rogers, 1858, Geol. Sur., Penn., vol. ii, p. 823, lig. 637. 

 Calymene Clintoni, Vogdes, 1880, Acad. Nat. Sc, Phila., Proc, p. 178, tigs. 3-4. 



Glabella slightly convex, the base broad, so as to form a 

 nearly equilateral triangle. The sides are marked with three 

 lobes, the posterior one being twice as large as the middle lobe, 

 but the anterior one is ill-defined. The dorsal furrows are deep. 

 The occipital ring triangular in front, and narrowing out later- 

 ally. The frontal limb is broad, and equal to half the length of 

 the glabella, and arched in front. It is worthy of remark that 

 this character is not common to the minute glabella found in the 

 same beds. The fixed cheeks have a buttress thrown across 

 Fig. 3. them extending along the sides of the glabella, but 

 this does not elevate them above it. The movaltle 

 cheeks arc ti iangular in outline, and posteriorly 

 extended into spines, and correspond to those 

 figured by Prof Hall, Pal. N. Y., vol. ii, pi. 66 a, 

 fig. 5, c. They are convex laterally along their 

 inner half, and grooved near the outer margin. 

 cuymene Clintoni ^Y\\c\\ is defined bv a raised border. The pygi- 



\anuxem. The gla- J i .< <-j 



che^k/showingYhe ^'uin ^^ tiiaugulariu outline, and resembles the 

 ^"'i''^''"'-""**' limb. u^^j,g Qf ^i^jg pg^j.|. giyg^ i3^, pj,Qf^ gall, Pal. N. Y., 



Fig. 4. vol. ii, pi. Ixvi a, fig. 5 d, except in size. The 

 axis is marked with about eight articulations. The 

 lateral lobes are not marked with ribs, as usual in 

 Calymene, and in this respect the pygidium bears 

 some resemblance to that of C. arago and C. 

 salteri, two European forms found in the Lower 

 Silurian, and descsibed by Rouault in the Bulle- 

 tins of the Geol. Soc. of France, vols, vi and viii, 



Cah/mene Clintoni 

 V a n'n x e m . The | 848—51 . 

 movable cheek. 



Geological P<?s^Y^■o?^.— Clinton Group, Catoosa Station ; also 

 in the Ilematitic bed at Dug Gap, Georgia. 



