PALEOZOIC CORALS AND FORAMINIFERA. 101 



that it might easily be mistaken for it ; it is destitute however of 

 the longitudinal external fissure-like opening and complex in- 

 ternal structure of that genus, seeming more properly allied to 

 certain moniliform, few-celled Nodosar-ice, such for instance as 

 the N. rudis and N. rugosa of M. D^Orbigny's work on the 

 Austrian Foraminifera, with both of which species it agrees almost 

 perfectly. The lodges or cells are almost always found separated 

 (from the minuteness of the connecting neck), which gives them 

 the striking resemblance to FusuUnce above alluded to ; I have 

 heard however of several of them having been found united in a 

 line by their little necks, and I have myself seen two thus united, 

 and the posterior cell not being a terminal one. 



Occurs in great numbers on the weathered surfaces of the car- 

 boniferous limestone in the parish of Shivey, Tyrone, in the 

 north of Ireland. 



{Col. University of Cambridge and Royal Dublin Society.) 



Exclusive of the above species, the following is a list of such 

 British corals of the carboniferous period as I have myself 

 noted since the publication of Morrises Catalogue of British 

 Fossils in addition to the species there given ; it includes, 

 1st, some species described by foreign authors which I have 

 recognized in Britain ; 2nd, a few Devonian species for which 

 I give undoubted carboniferous localities ; and 3rd, those new 

 forms which I have figured and described in the ' Synopsis cf 

 the Characters of the Carboniferous Limestone Fossils of Ire- 

 land ' published some years ago, the result of an examination 

 of the collections made in that country by Mr. Griffith of 

 Dublin, with whose permission I now however, for the first 

 time, publish the principal geological and geographical loca- 

 lities, the omission of which in the work mentioned has often 

 been regretted. All the localities except those in italics are in 

 Ireland. All the species in italics are in the Geological Museum 

 of the University of Cambridge. The following abbreviations 

 are used of the rocks : Ar. L. Arenaceous Limestone, a peculiar 

 band in the middle of the yellow sandstone at the base of the 

 carboniferous series ; Calp, a provincial term for a band of dark 

 argillaceous limestone occurring between the great lower and 

 upper limestones, accompanied in the north of Ireland by thick 

 beds of shale and a little sandstone ; C. L. Carboniferous 

 Limestone generally ; C. Sh. Carboniferous Shale generally ; 

 C. SI. Carboniferous Slate, the shales between the base of tlie 

 lower limestone and the top of the yellow sandstone, alterna- 

 ting more or less with each at the points of junction ; L. L. 

 Lower Limestone, the great limestone of Ireland, between the 

 Calp and the carb. slate ; U. L. Upper Limestone, a thinner 

 deposit than the lower limestone, occurring between the Calp 



