What is "trimetopon"

Trimetopon is a genus of colubrid snakes, which are endemic to Costa Rica. They are known as Tropical ground snakes and six species are currently recognised.

• Trimetopon barbouri Dunn, 1930 (Barbour's Tropical Ground Snake)
• Trimetopon gracile Günther, 1872 (Günther's Tropical Ground Snake)
• Trimetopon pliolepis Cope, 1894 (Cope's Tropical Ground Snake)
• Trimetopon simile Dunn, 1930 (Dunn's Tropical Ground Snake)
• Trimetopon slevini Dunn, 1940 (Slevin's Tropical Ground Snake)
• Trimetopon viquezi Dunn, 1937 {Viquez's Tropical Ground Snake)