In the typical mongooses or ichneumons, Herpestes, the dental formula is i.
Various, Encyclopaedia Britannica, 11th Edit...(2010)
The Herpestes fasciatus has likewise bred; but I was formerly assured that the H. griseus, though many were kept in the Gardens, never bred.
Darwin, Charles, The Variation of Animals and Plants...(2010)
The next has been formed into a separate genus, Urva; the teeth are blunter than in Herpestes.
Sterndale, Robert Armitage, Natural History of the Mammalia of...(2010)