Yeah, probably so.
Here is a sampling of other high-HD critters:
Brachyurus (38 HD): Str 30, Dex 38, Con 47, Int 18, Wis 32, Cha 19 = 184 points
Sirrush (40 HD): Str 42, Dex 40, Con 44, Int 21, Wis 38, Cha 28 = 213 points
Tayellah (34 HD): Str 32, Dex 48, Con 34, Int 14, Wis 32, Cha 19 = 179 points
Tarrasque (48 HD): Str 45, Dex 16, Con 35, Int 3, Wis 14, Cha 14 = 259 points
Perhaps its ability scores should at least add up to 200 points?
Looking at it again, it appears like Con should probably be its highest stat, since its lightning attack will probably be a breath weapon, and thus Con-based. It doesn't appear to be incredibly strong for its size, but I could see a high Dex. Any of the mental stats could be good, due to its genius intellect, superb senses, and apparent courage and willpower.