HONEYMAN. 181 
NOVA SCOTIAN GEOLOGY 
m., of the posterior 12 m. m. There is a deep fossette on the 
back part of the frontal lobe, a little above the anterior furrow. 
It is papillose or coarsely granular except in the space between 
the lateral furrows, there being only two tubercules from the 
curve of the fossette to the occiput. All the species that have 
been found in the “ Upper Arisaig series” with the exception of 
Dalmanialogani occur in B’ or Clinten, none of them are papillose. 
Regarding the species as new, I have named it Dalmanites 
gilpinr. 
9. Strophomena alternata does not occur in our “ Upper Ari- 
saig series” but it is of frequent occurrence in the “ Wentworth 
series ” of the Cobequid mountains, which I have correlated with 
the Hudson river or Cincinnati period (Lower Silurian). 
10. Athyris of several specics are found in the forms of casts. 
This genus prevails in the lowest part of the “Upper Arisaig 
series,” being generally associated with corals, which were re- 
ferred to the genus Petraia by Mr. Salter. The Athyris then dis- 
appears to reappear in great force in the Lower Carboniferous 
Limestone. 
11. Spirifera are abundant here as at Nictaux, especially in 
the Iron mines. It is the prevalence of Spirifera that makes 
me hesitate in placing the Asaphus strata lower than the middle 
Silurian. In the “Upper Arisaig series” Spirifera are most 
numerous in the Middle Silurian division. 
14. Maclurea, s. p—The form which I referred to the genus 
Maclurea occurs in the specimen of quartzite referred to in my 
Diary (Tuesday, 15th), associated with the Cruciform organism. 
It is a cast of the top of the shell er whorl. The width of the 
east is 2.7 x 2 inches, its depth .7 inches. 
15. Bellerophon trilebatus. Several specimens of this Het- 
eropod were found at the mines. It differs from the Bellerophon 
trilobatus of Arisaig in the form of its middle lobe. It is not so 
rounded, being rather acute, so that it may be regarded as an 
older variety. Bellerophon trilobatus is not found in the Middle 
Silurian of the “Upper Arisaig series.” Its first appearance is in 
its crinoid strata, at the base of C, the Upper Silurian. 
16. Theca,sp. is very much like Theca triangularis of the 
