Related Clues:

• They bite like the bit at the end
• The way it comes right at the end could be the death of you
• The snakes of summers, perhaps
• May be the death of you, like it comes as the end
• Summer biters?
• These creeps seem as if they would not make a 13 across
• Fifty such might have rung and have bitten
• One may have got to grips with a hundred and fifty such fatal things
• One of the hazards of summers?
• Highly dangerous, by the way of an afterthought
• Creepy sumers?
• However poisonous, after a century and a half one gets to grips with them
• Poisonously like the start of 19 across
• You may pass them; they're not going on foot
• Something in the way of an afterthought has them footless