CORALS AND BRYOZOA. 87 



LiCHENALIA (SeLENOPORA) COMPLEXA. 



PIRATE XXXI, FIGS. 19, 20. 



Lichenaiia complexata (by error), Hall. Trans. Albany Institute, vol. x, abstract, p. 11. 1881. 

 Felenopora complexa. Report of State Geologist for 1885. Expl. pi. 31, figs. 19, 20. 1887. 



The manner of growth of this species is the same as that of S. cirdnda, but 

 the cell apertures and vestibular areas are very much larger. Diameter of 

 areas .66 mm., of cell apertures .25 mm. 



Formation and locality. Upper Helderberg group, Falls of the Ohio river. 



FiSTULIPORA LAMELLATA. 



PLATE XXX, FIGS. 21-'3. 



Thallostigraa lamellata. Hall. Tran.s. Albany Institute, vol. x, abstract, p. 13. 1S8K 



Fishilijmra " Report of State Geologist for 1885. advance sheets. Expl. pi. 30, figs. 21-23. 1886. 



ZoAKiUM consisting of very thin lamellate expansions. Cell apertures generally 

 circular, sometimes ov.al, diameter .36 mm. ; irregularly disposed, somewhat 

 distant. Peristomes strong, distinctly and equally elevated. Surface marked 

 by maculae, which are destitute of cell apertures, and distant from each other 

 about 5 mm. ; the apertures immediately adjacent to these are larger than 

 the others. Mesopores minute, indistinct, margins very slightly elevated. 



This species may be distinguished from Lichenaiia permarginata by the much 

 smaller, more clo.sely arranged cell apertures, and by the presence of meso- 

 pores ; from F. scrobiculata of the Hamilton group, by its somewhat larger cell 

 apertures and very minute mesopores. 



Formation and locality. Upper Helderberg group, Onondaga Valley, Onondaga 

 county, N. Y. 



FiSTULIPORA INTERCELLATA. 



PLATE XXXII, FIGS. 15-20. 



TJiaHostigma intercellatn. Hall. Trans. Albany Institute, vol. x, abstract, p. 13. 1881. 

 Fixtuliimra " R.'port of State Geologist for 1885. Expl. pi. 32, figs. 15-20. 1887. 



ZoARiUM consisting of thin lamellate expansions incrusting other objects. Cells 

 tubular, at right angles to the surface, without septa. Apertures oval, length 



