Kalmar "Biri Proboscis" tana nufin wani nau'in nau'in nau'in halitta, Nasalis larvatus, wanda ya fito daga Borneo, Malaysia, da Indonesia. Kalmar "proboscis" ta samo asali ne daga kalmar Latin "proboscis," wanda ke nufin dogon hanci ko hanci. An san biri na proboscis don babban hancinsa na musamman, mai bulbous, wanda zai iya girma har zuwa inci 7 (17.78 cm) a cikin maza kuma ana amfani dashi azaman resonator. Biri na proboscis kuma yana da siffa ta musamman da tukunyar ciki da tsayi, gaɓoɓin gaɓoɓi. Wani nau'in tsiro ne, yana ciyar da mafi yawan lokutansa a cikin bishiyoyi, kuma an san shi da iya tsalle tsakanin rassan. Birin proboscis mai karfin ninkaya ne kuma galibi ana samunsa kusa da koguna da fadama. An dauke shi a matsayin nau'in da ke cikin hatsari saboda asarar mazauna da kuma farauta.