Humboldtianinae
Humboldtianinae is an subfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Xanthonychidae. Taxonomy 
The subfamily Humboldtianinae consists of the following taxa:
 Tribe Bunnyini H. Nordsieck, 1987
 Bunnya H. B. Baker, 1942
 Tribe Humboldtianini Pilsbry, 1939
 Humboldtiana Ihering, 1892
 Tribe unassigned
 †Skinnerelix Evanoff & B. Roth, 1992

Anatomy
The anatomy of this subfamily is defined by the presence of a diverticulum and three to four dart apparatuses (the love dart is used in mating behaviour). They always have the same number of dart sacs and mucus glands, with two darts per dart sac. The mucus glands are situated on, and open into, the vagina, above the dart sac. Distribution 
Species of the subfamily of Humboldtianinae are found in the United States and Mexico. References

External links 
Humboldtianidae