Tl'.c Paiiiia of the Maxiillc Lijiu'sloitc. 363 



rays on tlie anterior side, and on the outer side an arm several 

 times larger and stronger than the others, and composed of 

 larger and stronger plates. 



"Plates of the arms short and unequal-sided, and giving; 

 origin to jointed tentacuhe from the longer side of each plate,, 

 which is upon the alternate sides of the arm, or on the same 

 side from every second plate. Surface of the [jlates smooth.. 

 Length of the arms and suhsecjuent hifurcation not known.. 

 Colimin small, round, and composed of unequal-sized plates 

 alternating with each other. 



"The slender arms are preserved on two individuals to the 

 length of about one inch, and the strong anterio-lateral arm 

 on one, to more than an inch; hut no evidence of hifurcation 

 appears. 



"The inequality of the anterio-lateral arms will be the dis- 

 tinctive feature of the species, as the form of the calyx is simi- 

 lar to many other species of the group | Wdiitheld, 1895]." 



Hori.con ami lucalifv. — .Maxville limestone. 

 Upper zone: Mouth of lUickeye h^)rk. h^dtonham. 



PHYLUM MOLLUSCOIDEA. 



CL.ASS RRYOZOA. 

 SEPTOPORA RECTISTYLA-Wh tfield. 



18«-i. Syiiochuiia rcctistyla. Whitl'iclil, .\nn. N. Y. Acad. Sci., Vol. II, 

 p. -.'-iO. 

 Maxville limestone: Xevvtonville, Ohio. 

 18!)1. Syiioclacilci rectistyhi. Whitfield, .\nn. X. ^■. Acad. Sci., Vol. V, 

 1). .■•)7!l. |)1. 1;!, figs. !), 10. 

 Maxville limestone: Xewtonville, Ohio. 

 180.5. Syiiocladia rrctistyla. Whitfield, Geol. Snrv. Ohio, Vol. VII, 

 p. 4(17, pi. !l, liiis. !>, 10. 

 Ma.xville limestone: Xewtonville, Ohio. 



Dcscri/^tioii. — Zoarium a s])reading. funnel-sha])ed frond 

 with a rooted l)ase. r)ranches slender, straight, from 0.35 mm. 

 to 0.40 mm. in diameter, and with l)ifurcations at frequent 

 intervals. Al)out 10 l)ranches to each cm. liranches more or 



