A new karst-dwelling, colorful pitviper (Viperidae: Trimeresurus) from northern Peninsular Thailand.

We describe a colorful and distinctively patterned, karst-dwelling pitviper, Trimeresurus kuiburi sp. nov., from the isolated, coastal massif of Khao Sam Roi Yot in Kui Buri District, Prachuap Khiri Khan Province, in northern Peninsular Thailand.

A new limestone-dwelling leaf-toed gecko (Gekkonidae: Dixonius) from coastal hills in Cha-am, peninsular Thailand.

We describe Dixonius pawangkhananti sp. nov. from coastal limestone hills in Cha-am District, Phetchaburi Province, peninsular Thailand.

(Squamata: Agamidae), a new long horn lizard from northern Thailand.

Background: In Thailand, five species of have been recorded so far, including from the southern region, from the eastern region, from the western region, from the northern region and from the Phuket Island and south-western region. However, comprehensive studies of diversity patterns and distribution of are still lacking in some areas and need further information for designating areas of special conservation importance and nature protection planning in Thailand.

New Information: is a new species of long-horned lizard of the genus from northern Thailand.

A new limestone-dwelling leaf-toed gecko (Gekkonidae: ) from Khao Sam Roi Yot massif, peninsular Thailand.

We describe Dixonius kaweesaki sp. nov. from Khao Daeng, a limestone mountain in Khao Sam Roi Yot massif, Prachuap Khiri Khan Province, peninsular Thailand.