Nasal depth averages 22 mm.; the regional variation is very small.
The tension of the eyeball rose to 60 mm., that of the fellow eye being 20 mm.
Impression, 23 by 17 mm., apparently lithographed in color on white paper.
There were 106 eggs, each having a diameter of about 40 mm., plus one small egg and a fragment of another.
Caryopsis 7-8 mm., less flattened than in Bromus, with a shallow groove.
In most individuals smaller than 20 mm., this dorsal mark is well defined and conspicuous.
The length of the longest is 109 mm.; of the shortest, 29 mm.
The holotype, a gravid female, is the largest known specimen (31 mm., snout-vent length).
The larger size, about 85 mm., is the best to use, whilst the very small sizes are better suited for some work.
The total length of cam-shaft is 1038 mm., and it becomes a regular gun boring job to drill a hole of this length.