Coal Meastire Horizon in N. M. — Herrick and Be?idrat. 239 
species which it is impossible to identify witli any of the pub- 
hshed- descriptions. 
POLYPORA COYOTENSIS n. sp. 
Compare Polypora whitii. 
Zoariwn, fan-shaped and flat; extent unknown, at least 
several inches. Branches, very slender, alternately bifurcat- 
ing, about thirteen in one cm., being nearly as wide as the 
fenestrules and strongly convex. Ftviestrides, rarely regular 
oval; about tv/ice as long as wide; about seven in the length 
of one cm. Zoecia, oblique and prominent, about three in 
alternating rows, each row bordered by an undulating ridge. 
They are arranged two at each dissepiment and four in the 
intervening space. Peristome apparently elevated. A^o/i- 
poriferous side covered with about ten to twelve sharp, hair- 
like ridges, beneath which in some states of preservation 
appear the outlines of the cells. We would suggest for this 
new species the name Polypora Co}-otensis. 
FENESTELLA ALBUQUERQUCANA n. sp. 
Ci3nz/////« most probably fan-shaped; size not known, as 
only fragments of three specimens are secured. Longitiidi/ial 
rays usually round, somewhat flexuous and frequentl_\- di- 
chotomosing. Dissepiments, about half as large as the longi- 
tudinal ra\'s in most cases, dilated as the\' open into the 
longitudinal rays, opposite and subopposite, non-poriferous 
and short. Fenestrules in most cases subquadrangular, about 
twice as wide as the longitudinal rays, somewhat lanceolate 
at the bifurcations, about 2.5-3 fenestrules longitudinally 
and five fenestrules transversely in 5 mm. Cells'xn all cases, 
where the surface of obverse side is preserved, 5 on each 
side of the fenestrules, circular in shape, alternately ar- 
ranged in two rows, .separated by a prominent, flexuous, ap- 
parently not pustulate keel. There is also one pore to be 
seen opposite the dilatations of the dissepiments. The pe- 
riphery of the fenestules is not greatly indented. Under side 
finely striated. 
Found in the black limestone below "Flint Ridge" in 
Carboniferous exposures "in the corners," three miles about 
south of Co)'ote Springs, Sandia Mts., N. M. 
Whether it is identical with "Fenestella intermedia," de- 
scribed by Prout in "Trans. St. Louis Acad. Sci.," p. 231 
or not, it was impossible to decide, because of the ambigu- 
ous description, especially with regard to the arrangement 
of the pores. If further researches should prove it to be 
