both islands are the false mapepire (Leptodeira annulata ashmeadi) and the slug-eating snake (Sibon nebulata). Other interesting Dipsadinae include the water mapepire (Helicops angulatus) a habitat specialist of freshwater and brackish water systems of lowland Trinidad, the mainly diurnal beh belle chemin (Erythrolamprus melanotus nesos) of forest and edge habitats on both islands, the false coral snakes (Erythrolamprus aesculapii and Erythrolamprus bizona) that are also found in forest and edge habitats of Trinidad only and the rare crepuscular red snake (Erythrolamprus ocellatus) endemic to the forest and edge habitats of northeastern Tobago. There are no dangerous venomous snakes on Tobago. There are only four dangerous venomous snakes on Trinidad. These include two vipers, and two coral snakes. The vipers (the true mapepires) are the mapepire balsain (Bothrops atrox) and the mapepire zanana (Lachesis muta muta). The former is fairly common in primary and secondary forested areas of Trinidad (particularly so in the Northern Range), and the later is a very rarely encountered primary rainforest specialist in Trinidad. The two coral snakes are the small coral snake (Micrurus circinalis, and the Trinidad ribbon coral snake (Micrurus diutius), both associated with forested areas, and the later sometimes being associated with swampy habitats in Trinidad. Fatal venomous snake bite accidents in Trinidad are fairly uncommon. It is unfortunate to note that although all snakes (with the exception of the potentially dangerous vipers and corals) are protected by law in Trinidad and Tobago, the human population at large is not generally tolerant of snakes, and even harmless snakes found near human dwellings, farms and gardens are often killed on sight. More public awareness is needed to dispel misconceptions about snakes as well as to sensitize the population to the ecological importance of snakes. Invertebrates Trinidad and Tobago are extremely rich in neotropical invertebrate fauna. Several hundred species of butterflies, including the brilliant blue emperor butterfly (Morpho peleides), and beetles are to be found on the islands, many in the tropical forests. Barcant (1970) lists 617 species of butterfly for the two islands of which 123 occur on Tobago. The leafcutter ants (Acromyrmex octospinosus and Atta cephalotes) are easily observed, even in sub-urban environments. Soldier ants may be observed in forested areas. The largest specimens of centipedes (genus Scolopendra) (over long) may be found particularly in the drier forests of the Northwestern Peninsular of Trinidad (the Chaguaramas Peninsular) as well as the nearby tiny off