60 



Descriptions of New Species of Fossils 



CaLLOPORA ? DIVERSA H. Sp. 



Frond ramose, solid ; branches iufrequent, strong and usually some- 

 what compressed, often much thickened below the bifurcations, and 

 presenting a clavate form. A longitudinal section shows the cells 

 gradually divergent from the centre and turning abruptly outward 

 near the surface ; cell-walls with strong and regular corrugations, 

 about four in the space of one millemetre ; septa wanting or very 

 infrequent ; cell-apertures usually subcircular, sometimes distinctly 

 oval and often subangular from close proximity, with distinct spines 

 at the angles, and sometimes with margins entirely granulose. In- 

 tercellular spaces sometimes marked by a single series of pits upon 

 the surface, but usually this feature is absent or obsolete ; a section 

 of a branch shows the septate intercellular spaces extending a short 

 distance below the surface. 



This species, in its solid structure, and its intercellular spaces, seen 

 only near the surface, so closely resembles Ch^etetes that there is 

 little reason for separating it from that genus. It can be distinguished 

 from Callopora cervicornis by its stronger habit, more circular 

 cell-apertures, and conspicuous maculae with larger cells. 



Trematopora subimbricata n. s}?. 



Bryozoum ramose ; branches straight, hollow ; inner surface 

 transversely wrinkled ; cellules risins;; from the epitheca and con- 

 tinuing with slight obliquity to near the surface, where they curve 

 outward almost rectangularly to the axis. Cell-apertures oval, 

 about two-thirds as wide as long, often closely arranged or crowded, 

 upper side without elevated margin, lower side with a projecting lip. 

 In some parts of the surface there are maculne of larger and more 

 irregularly disposed cells. 



This species resembles T. oscuhim in its general aspect ; but the 

 branches are stronger, and the cell-apertures irregularly disposed. 

 In that species the smaller and more regularly arranged cells are 

 marked by a projecting border on the upper margin. 



Trematopora ? (Trachypora ?) macropora n. sp. 



Bryozoum branching ; branches slender, solid, infrequent, dia- 

 meter .5mm Cell-apertures oval, very large in comparison with 

 the branches, about .3mm. in length and .2mm, in width, with 



