Lioheterophis iheringi Amaral, 1934

(Fig. 28.4)

Caatinga endemic species. It is known only for the type-locality in Paraíba State, municipality of Campina Grande. This area is situated on the Borborema Plateau, 560 m elevation, with strong influence of the adjacent Atlantic Forest. It is known only by one specimen (lost holotype, TBG pers. obs.) collected in 1934 (Amaral 1934). Therefore it appears to be extremely rare. Apparently inhabits forested areas because the single locality situated in agreste, near coastal Atlantic Forest, is wetter than the adjacent semi-arid lowlands. Information about natural history of this species is not available.