27 
On the last and anterior quadrant of the ultimate whorl there are two 
bifurcated secondaries plus one intercalated secondary per each primary 
rib. The ribs are narrow, rather sharp, and of considerable relief. The 
primary ribs are very slightly inclined forward. The secondary ribs are 
inclined a little on the sides, and most so near the anterior end; they are 
straight across the venter except close to the anterior end, where they 
incline forward a little. The suture line is fairly complex. ES is deeper 
than broad and unequally divided by a small lobule, the inner branch 
is the smaller. SI is smaller and about equally divided into two branches. 
S2 is smaller than SI and divided into three branches. The auxiliary 
saddle is small and inclined. LI is a little longer than EL, rather broad 
stemmed, tripartite, about symmetrical, and with a long and narrow 
median lobule. L2 is narrow and short. Aux.l is inclined and is shorter 
and much more narrow than L2. Very small aux. 2. The tubercle is on 
the inner branch of SI. 
In number of secondary ribs this species resembles Epalxites formosus 
S. Buckman 1 , but it has fewer primary ribs, is smaller, has thinner and lower 
whorls, a larger umbilicus, the lappet and tubercle are more dorsal in 
position, and there are differences in the suture line. 
Compared with Otoites braikinridgii (Sowerby) 2 it has fewer primary 
ribs, sharper ribs, more gently arched whorls, and a larger umbilicus. 
The general shell proportions are similar to those of Kanastephanus 
crickmayi and K. mackenzii. In number of primary ribs it is intermediate 
between K. crickmayi and K. mackenzii and nearest to K. altus. It differs 
from all the known species of Kanastephanus in the greater number of 
secondary ribs on the ultimate whorl. Stephanoceras sp. of Boehm 3 is 
somewhat similar, but has fewer secondary ribs and lacks the umbilical 
enlargement. 
Horizon and Locality. In the Yakoun formation on the southernmost 
of Channel islands, Skidegate inlet. 
Type. National Museum of Canada, Ottawa; holotype, Cat. No. 
9020. 
1 Type Ammonites, III, pt. 21, PI. 151 (1020). 
1 Yorkshire Type Ammonites, p. 81b. 
* Boehm, G.: Nova Guinea, Resultats L’Expedition scientifique Ne’erlandaise S. la Nouvelie Guin6e on 1903 , 
vol. 6, Geologic, Abschnitt I, p. 101, PI, 5, fig. 4 (1912). 
