Barbour's tropical racer

The specific name, bruesi, is in honor of American entomologist Charles Thomas Brues, who was one of the collectors of the holotype.^[3]

M. bruesi is native to Saint Vincent and the Grenadines, and Grenada.^[1][2]

M. bruesi can reach a snout-to-vent length (SVL) of about 83 cm (33 in). Dorsally, it is blue-gray to brown, with lighter lateral stripes. Ventrally, it is whitish.^[2]

M. bruesi is diurnal, hunting frogs and lizards.^[1]

The preferred natural habitat of M. bruesi is forest, both mesic and xeric.^[1] It can be found on the ground, and in bushes, where it sleeps at night.^{[citation needed]}

M. bruesi is oviparous.^[1][2]

M. bruesi has been recorded in the southwest corner of Saint Vincent and is widespread all over the Grenadines islands.^{[citation needed]} It is also found on the southern half of Grenada, which is the furthest south it is distributed.^{[citation needed]} It has been introduced to Barbados,^[1] probably around thirty years ago, where it has been incorrectly identified as Liophis perfuscus.^{[citation needed]}