4 KANSAS UNIVERSITY QUARTERLY. 



Closely resembles S. nickelsi Ulricli from the Chester group. Our 

 species is larger, has a fewer number of mesopores, the ridges sepa- 

 rating the ranges are undulating, and the zoecial apertures are a little 

 larger. The internal characters are much like those of Ulrich's spe- 

 cies. As far as I know, this is the first mention of the genus in the 

 Coal Measures of America. 



Specific name in honor of Mr. E. O. Ulrich, of Newport, Ky., the 

 authority on American paleozoic bryozoa. 



Strehlotrypa sfriatopova. n. sp. Plate lY, fig. 1. 



Zoarium a dichotomously dividing cylindrical stem, from 1 to 1.5 

 mm. in diameter. Zoecial apertures arranged alternately in longitudi- 

 nal series, about six in 3 mm. The diagonal arrangement is usually 

 more noticeable, with five apertures in 2 mm. No longitudinal 

 ridges between the rows. Zoecial apertures subcircular to elliptical, 

 about 0.2 mm. long, surrounding spaces slightly elevated, but without 

 peristomes. Whole surface occupied by numerous small, more or less 

 elongated, mesopores, which are usuall}' arranged in longitudinal 

 series, their lateral walls giving them a decidedly striate appearance. 

 The striations are undulating, and are more prominent in slightly 

 worn specimens. The internal characters are but imperfectly shown 

 in the sections made. The zoecial tubes are short. No hemisepta 

 were observed. 



Position and locality : Upper Coal Measures : Kansas City, Mo., 

 and Lawrence, Kan. Type in author's collection. 



This species is quite like S. multijyorata Ulrich. from the Waverly 

 group, of Ohio, but presents the following differences : The zoecia 

 apertures are larger, the mesopores are smaller, and the longitudinal 

 arrangement of the same is more prominent. 



FEXESTELLID.E King. 

 Fenestella hexafiomiUs. n. sp. Plate I, figs. 4, 4:«. 



Zoarium a reticulate expansion : size unknown. Branches slender, 

 somewhat flexuous, 0.3 mm. wide, nineteen in a space of 1 cm. Dis- 

 sepiments short, rounded, much depressed, almost as wide as the 

 branches. Fenestrules subelliptical. slightly constricted in the 

 middle by the zoecia mouths, 0.4 mm. by 0.2 mm., twelve in 1 cm. 

 Carina prominent, subangular, bearing a row of rather large, flattened 

 nodes, usually jDlaced so that there is one opposite each dissepiment. 

 Zoecia in two alternating ranges, seventeen in 5 mm. Apertures 

 comi^aratively large, elevated, a little more than their diameter apart, 

 usually three to a fenestrule. Rarely is one situated at the end of a 

 dissepiment. On the reverse the branches are more flexuous and sub- 

 angular. Both they and the dissepiments bear a single row of small, 



