 <unk> , there are 28 – 46 dorsal scale rows , all of which are strongly <unk> except for the outer rows on each side . The lateral scales are slightly oblique . The ventral scales number 124 – 140 : rarely more than 132 in males , rarely less than 132 in females . There are 17 – 33 paired <unk> scales : males have no fewer than 25 , females no more than 23 . The anal scale is single . 
