llic Fauna of th.c Ma.vz'illc Liiiicstoiic. 363 



rays on the 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 nnequal-sided, and giving 

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

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

 side from ever}^ second plate. Surface of the plates smooth. 

 Length of the arms and subsequent bifurcation not known. 

 Column small, round, and composed of unecjual-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 ; Ijut no evidence of bifurcation 

 appears. 



"The inequalit}' 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 [Whitfield, 1895]." 



Horizon and localifv. — Maxville limestone. 

 Upper zone : ]\Iouth of Buckeye Fork, Fultonham. 



PHYLUM MOLLUSCOIDEA. 

 CLASS BRYOZOA. 



SEPTOPORA RECTISTYLA— Whitfield. 



18S-2. SyiKH-ladia rectistyla. Whitheld, Ann. N. Y. Acad. Sci., Vol. II, 

 p. L'-iO. 

 Maxxille limestone : Newtonville, Ohio. 

 1891. Syiiocladia recfisfyla. Whithekl, Ann. N. Y. Acad. Sci., Vol. V, 

 p. .-iT!!, pi. 18, fig-s. 0, 10. 

 Maxx'ille limestone : Newtonville, Ohio. 

 181J5. Syiiocladia rectistyla. Whitfield, Geol. Surv. Ohio, Vol. VII, 

 p. 4(17, pi. n, fig-s. 0, 10. 

 Maxville limestone: Xewtonville, Ohio. 



Description. — Zoarium a spreading, funnel-shaped frond 

 with a rooted base. Branches slender, straight, from 0.35 mm. 

 to 0.40 mm. in diameter, and with bifurcations at frequent 

 intervals. About 10 branches to each cm. Branches more or 



