19(> Bryozoans of the 



are ovai or lunate, and directed upward; the tubes are generally 

 slightly overlapping; tiic nodes on different tubes are very variable. 

 Locality — New York. 



HERNODIA, nov. gen. 

 Herxodia humifusa, n. sp. 

 Epizoic, procumbent, consisting of tubular cells enlarging to near 

 the aperture; diameter at smaller end .33 mm.; greatest diameter 1 

 mm. ; aperture slightly contracted ; length of tube 5 mm. ; surface 

 marked by comparatively strong annulations, concentric striae and 

 faint longitudinal striae. Growing upon GoinpJwceras. 

 Locality — Xew York. 



PTYLOPORA, McCoy. 



Bryozoum attached by radices, from which arises a strong midrib, 

 having slender equi-distant, cylindrical, lateral branches, connected by 

 dissepiments ; midrib gradually growing smaller from the base ; cellu- 

 liferous on one side. 



Ptylopora striata, 71. sp. 



Width of rachis from 1 to 1.25 mm. ; non-celluliferous side rounded, 

 striated; from ten to twelve striae on a branch, diameter of lateral 

 branches .20 mm.; situated at regular distances apart; non-cellu- 

 liferous side striated, dissepiments depressed, oblique ; on cellulif- 

 erous side the cell-apertures are arranged in two rows, opening directly 

 laterally, fourteen in the space of 5 mm. ; margins thin, elevated. 



Locality — West Williams, Canada. 



Ptylopora nodosa, n. sp. 



A transverse section of the midrib circular; width on fragments 

 observed .33 mm. ; width of lateral branches o20 mm. ; space be- 

 tween adjacent branches .40 mm. ; cell-apertures slightly oval, 

 =20 mm. in length, arranged in two rows, usually opening laterally, 

 margin of apertures thin, elevated : space between ranges eievateo,, 

 striated, nodose. 



Locality— Alden, N. Y. 



GLAUCONOME, Goldf. 

 Glal'conome carinata, n. sp. 

 Width of midrib .40 mm.; of lateral branches .20 mm.; lateral 

 branches diverging at an angle of 90 degrees; non-celluliferous side of 

 the midrib flattened, with a comparatively strong carina along the 



