Snout very long and acute with pointed tip, its lateral margins straight or rather concave; disc thickened centrally, its length 1.3–1.4 times width; orbit very small in adults, diameter 9–16 in preorbital length; tail 1.0–1.4 times longer than disc; skin rough, densely covered with small denticles; a pair of large thorns on each shoulder; a row of thorns median to spiracle and eye and on each rostral ridge in young. Colour is yellowish brown to greyish dorsally, except for large traslucent area on snout to each side of rostral cartilages; whitish below.