62 CONTRIBUTIONS TO CANADIAN PALEONTOLOGY. 



almost touch each other, but are seldom distant more than 1 line. Trans- 

 verse connecting tubes occur at rather long intervals. The inner struc- 

 ture is well preserved and consists of more than usually large inclined 

 plates (funnel shaped tabula 1 ). 



The Canadian fossil differs from the type of S. ramulosa principally in the 

 corallites being somewhat straighter, and in there being apparently fewer 

 connecting tubes. The principal point of agreement is the size of the 

 corallites. The characters of the species as set forth by McCoy (op. cit.) 

 sustain the writer in the opinion that the coral under consideration is in 

 all probability more properly referable to this species than to any other 

 of the genus. 



S. ramulosa occurs in the I^ower Carboniferous or mountain limestone 

 of England (the " Eubergangskalke" of Goldfuss). 



The specimen here referred to was collected in 1879, from the " Lower 

 Banff limestone " by Prof John Macoun, in the Bow River Pass, Alberta, 

 about fifteen miles west of Morley, at the " Gap." 



The '• Lower Banff limestone " is a term applied by Mr. McConnell to 

 the lowest division of a series of limestones and shales of Carboniferous age, 

 found in the valley of the Bow River. It immediately overlies lime- 

 stones that in his opinion represent the Devonian in that locality. Mr. 

 McConnell also believes that the limestones of Fossil Point, Peace River, 

 from which the specimen of S. reticulata previously mentioned, was 

 obtained, are the same as those found at the base of the Banff lime- 

 stones in the Bow River Pass. 



Genus Cannapora, Hall. 



The generic characters of this genus are given by Rominger (Fossil Corals 

 of Michigan) in the following words, — " Colonies of closely approximated, 

 erect tubules, with stout walls, sprouting from an incrusting basal expan- 

 sion formed of prostrate tubules growing and multiplying in the same 

 manner as an Aulopora. The erect ends of the tubules are annulated by 

 wrinkles of growth and by sharp-edged, periodical offsets marking an 

 interruption and renewed growth from the inner circumference of the 

 old orifices. The sides of the tubes are partly connected by horizontal 

 expansions of the walls, partly in direct contiguity, in which latter case 

 the otherwise circular tubes are pressed into a polygonal shape, and 

 connect in the contiguous parts by lateral pores. The orifices are slightly 

 dilated at the margins, radiated by twelve spinulose projections, rows of 

 which extend through the whole length of the tubes. Diaphragms are 

 not often developed,* direct transverse, and not funnel-shaped as in 

 Syringopora." 



* The diaphragms are, judging from specimens from Ontario, horizontal, numerous 

 and placed rather close together, but ai-e frequently not preserved. 



