CORALS AND BRYOZOA. 287 



nearly or quite in contact ; one portion of the peristomes is much the more 

 strongly elevated, sometimes giving a nodes appearance ; occasionally 

 the summit of the carina is angular and has two rows of nodes. 



Formation and localities. Hamilton group, Moscow, Livingston county ; Mut- 

 tonville. North Bristol Township, Ontario county ; Montieth's Point, west 

 shore of Canandaigua lake, Ontario county ; Black Point, Canandaigua lake, 

 N. Y., and other localities in the central and western part of the State. 



Note. — The two fuUowing species were omitted in the proper place in the text of the volume, pag«s 



87 and 98. 



LICHENOTRYPA, Ulrich. 1S85. 



LiCHENALIA (LiCHENOTRYPA) LONGISPINA. 



PLATE XXV, FIGS. U, \1. 



Lichenalia limgispina, \\ khi.. Trans. Albany Institute, vol. x, abstract, p II. 18S1. 

 Liclienatrypa lavemota, Ulrich. Cont. Amer. Pal., vol. I, No. I, p. 24. 188.'). 



" lon.gii>pina,'il\u,. Report of State Geologist for ISSti, advance sheets. PI. 3,5, ligs. 11, 12. 1886. 



" cuipera, Ulbicu. Cont. Amer. Pal., vol. 1, pi. '.', tig. 1. 



ZoARiUM consisting of thin lamellate expansions, incrusting other objects. In 

 the earlier stages of growth the cell tubes are extremely short, the apertures 

 oval, length from .25 to .30 mm., width two-thirds the length, closely and 

 irregularly disposed. Peristomes strong, sub-equally elevated. Interaper- 

 tural space smooth, flat or slightly concave. In the course of growth the 

 intermediate .space is traversed by thin walls, having a height of .50 mm. or 

 more, and frequently connecting the posterior portions of the peristomes, 

 inclosing the apertures in polygonal areas, and having the appearance of 

 an irregular net-work. At the angles of the elevations there are prominent 

 spines which sometimes attain a height of 1 mm. or more. The peristomes 

 of many of the apertures are elevated equally with the interapertural walls. 

 Intercellular space irregularly vesiculose. 



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



