10 



impressions of the principal septa in one line. On the surface of a small 

 worn specimen, nine lines in length, there are five obscure septal striae 

 in the width of two lines. The principal septa on approaching the centre 

 unite with each other laterally two or three at a time. The septa formed 

 by these unions again unite, thus forming fascicles of from two to seven 

 septa in each. 



The specimens do not show clearly the depth of the cup, but it appears 

 to be at least half the length of the coral. There are several species that 

 resemble this closely in form, but I know of none with such surface cha- 

 racters. In species of this genus the surface is covered with longitudinal 

 striae, but in this the whole body of the coral, except a small portion at 

 the base, is only transversely striated. This is owing to the thickness of 

 the epitheca. 



Locality and Formation. — Split Kock, Perc(^. Lower Devonian. 

 Collector. — Thomas Curry. 



Zaphrentis cingulosa. (N. sp.) 



■ " Undetermined Zaphrentis^'' Geol. Can., p. 439. 

 PI. 1, fig. 5. 



Description. — Corallum elongate, slender, cylindrical, more or less 

 curved, with a number of deep concave constrictions from five to ten lines 

 in width. Surface with strong rounded or sub-angular septal ridges, 

 three or four in the width of two lines. These are crossed by fine trans- 

 verse striae, of which there are four or five in one line. 



The specimen, a portion only of which is figured, is six inches in 

 length and apparently tapers about two lines. When perfect it was 

 probably ten or twelve inches in length. It is somewhat flattened by 

 pressure, and the form of the part figured is restored. In the 

 interior the septa are seen to reach the centre and there become 

 much twisted and confused. 



Only one specimen of this has been collected, but that is quite 

 sufficient to show that it is distinct from any described form. In its 

 surface characters it resembles S. ragatula^ but the deep constrictions 

 and great length are sufficient to prove it distinct. It is not certain that 

 it is a Zaphrentu. 



Locality and Formation. — Mount Joli, near Perce- Gaspe lime- 

 stone No. 8. 



Collector. — Sir W- E. Logan. 



