Adults of
E. conicus may attain a total length of , which includes a tail long. The anterior maxillary and mandibular teeth are longer than the posterior. The head is covered with small scales. The eye is small with a vertical pupil. The
dorsal scales are small and
keeled. The tail is pointed, not or but very slightly prehensile. The
rostral scale is twice as broad as long, slightly prominent, without an angular horizontal edge. The top of the head is covered with small obtusely keeled scales, except for the
nasals and
internasals which are enlarged.
Interorbitals: 8 to 10.
Circumorbitals: 10 to 15. The eye is separated from the
labials by one or two rows of scales.
Supralabial scales: 12 to 14.
Dorsal scales tubercularly keeled, in 40 to 49 rows.
Ventral scales: 162-186. The
anal scale is single.
Subcaudals: 17-24.
Dorsally, the color pattern consists of a broad zigzag band or a series of dark brown blotches on a yellowish or brownish grey ground color. The belly is uniform white. In
India it can be mistaken at first glance for either the
Indian python (
Python molurus) or the deadly
Russell's viper (
Daboia russelii). ==Behavior==