on the Genus Paleacis. 225 
Both Professors Morris* and De-Koninckt have placed 
M‘Coy’s Astreopora antiqua as asynonym of this species. As 
M‘Coy’s figure presents only a general and not an intimate re- 
semblance to P. cyclostoma we refrain from following these 
authors in this, until we have had an opportunity of examin- 
ing the original specimen in the “ Griffith Collection ” in the 
custody of the Royal Dublin Society. If distinct from P. 
cyclostoma, it will constitute a fourth species; the two, how- 
ever, are probably identical. A. antigua was found at Hook 
Point, Ireland. ‘The internal structure of P. cyclostoma has 
already been described. 
Localities and Horizon. Cousland and Chalkieside old 
quarries, near Dalkeith, in shale above the No. 1 limestone ; 
in shale above the limestones displayed at Whitebaulks old 
quarry, near Linlithgow, Charlestown and Sunnybank quarries, 
near Inverkeithing, Linn, Duloch, Southfod, Blacklaw, and 
Cowdens quarries, near Dunfermline, Woodend quarry, near 
Fordel, Lathalmond quarry, near Roscobie, Gleniston quarry, 
near Lochgelly: all the foregoing localities, except the first 
three, arein Fite. East Barns quarry, near Dunbar, Hadding- 
tonshire, and Carlops quarry, at Carlops, Peeblesshire, in shale 
above the limestones ; very common at most of these localities, 
and, as a rule, in a fine state of preservation ; the horizon 
throughout is that of the Lower Carboniferous Limestone group. 
P. cyclostoma has also been obtained at Carluke, Brockley, 
and Auchenskeoch, in the west of Scotland, on a similar 
horizon, and in the Upper Limestone group at Gair, Lanark- 
shiref. 
Other Localities. Northumberland (Phillips), typical lo- 
eality; Tournai, Belgium (De Koninck) ; Rothmaltersdorf, 
near Glotz, in Silesia (Ludwig), as Ptychochartocyathus laxus ; 
Hausdorf (Kunth), as Paleacis lava; Rockford in Indiana, 
Clarksville in Missouri, Saltlick Point in Illinois, in the 
Goniatite-bed of the Kinderhook group of the Subcarbonife- 
rous series (Meek and Worthen), as Sphenopotertum enorme, 
and its var. depressum. 
4, Summary of the Species of Paleacis. 
We believe that in all probability it will be possible to 
reduce the species of Paleacis to three only, viz. :— 
* Cat. Brit. Foss. 2nd ed. 1854, p. 47. 
+ Nouv. Recherches, 1* pt. p. 159. 
¢t “Cat. Carb. Foss. W. of Scotland,” Trans. Geol. Soc, Glasgow, iii. 
App. p. 16. 
