Examples from the Web for cotype
The type specimen is deposited in the writer's herbarium, and a cotype may be found in the State Herbarium.
The type specimen is deposited in the writer's herbarium, and a cotype may be seen in the State Herbarium.
Paratype: is every specimen of the series from which the type was selected see type and cotype.Explanation of Terms Used in Entomology|John. B. Smith
I incline to the view that a specimen so designated would at most be only a lectotype, unless it were a cotype.American Weasels|E. Raymond Hall