BATOSTOMELLA. 187 



1. Ramipora, sp. PL XX, figs. 9, 9 a, 11, 11 a. 



Description. — Zoarium plumose, consisting of several main slightly arching 

 stems, arising from a parasitic base, and giving off at intervals of about 1*5 mm. 

 level secondary branches, trending upwards at an angle of 50°. Secondary branches 

 of each stem joined by a few slighter dissepiments to each other or to those of 

 adjacent stems. Cells with contracted mouths, arranged in a double row, opening 

 outwards, and existing not only on the stems but on the secondary branches and 

 dissepiments. 



Size. — A fragmentary specimen measures 18 mm. by 20 mm. 



Locality. — There are two fine specimens in the Torquay Museum, which are 

 probably from Lummaton, another in the Woodwardian Museum, and a fourth in 

 my Collection from the same place. 



Remarks. — Dr. Gregory considers that these fossils evidently belong to the 

 genus Bamijjora, and on his authority I place them here, though some points still 

 require elucidation. They differ from the only described species, B. Hochstetteri, 

 Toula, and its variety cariuata, Etheridge, by their slighter forms, much smaller 

 size, and the comparatively less developed character of the fenestrules. Their 

 branches are not quite so constantly level, the dissepiments seem rarer, and the 

 cells are arranged simply in two straight ranges on the main branch, quite unlike 

 Toula' s figured type. 



It is certainly to be observed that my sliced specimen does not absolutely 

 coincide with the others with which I have united it on Dr. Gregory's authority, 

 and that none of the specimens give any indications of a keel, which possibly may 

 be accounted for by the state of their fossilization. 



2. Sub-order.— TREPOSTOMATA, Ulrich, 1890. 



I. Family. — Batostomellid.e, Ulrich, 1890. 



1. Genus. — Batostomella, Ulrich, 1882. 



' Zoarium ramose, slender, without monticules. Zooecia thick-walled near 

 surface, with delicate distant diaphragms. Apertures small, oval or circular. 

 Interspaces rounded, thick, spinulose. Acanthopores small, usually numerous. 

 Mesopores small, subcircular. 



