trimeresurid

[TRIM ERES URUS.] Zool .: Any individual of the genus Trim eres urus (q. v.). They are venomous arboreal snakes, in color resembling the foliage among which they live, naturally sluggish until disturbed, when they become fierce and aggre ive, drawing back the head and anterior part of the body and then dash ing forward with great rapidity. They are seldom more than two feet long, and their bite causes fever, nausea, and vomiting; but the bite of larger specimens causes much more serious, and sometimes fatal symptoms.