Trimorphodon biscutatus (Lyre snake): predation fatality.    From Wordnik.com.  [Archive 2006-02-01] Reference

‘Death by piercing’ isn’t limited to big snakes – Klauber (1982) reported that horned toads Phrynosoma may kill snakes that try to swallow them (the lizard’s horns perforate the snake’s throat) and Ramírez-Bautista and Uribe (1992) described the case of a Lyre snake Trimorphodon biscutatus (a terrestrial colubrid) that died after the spiny tail scales of a Spiny-tailed iguana Ctenosaura pectinata pierced the snake’s stomach and oesophagus.    From Wordnik.com.  [Archive 2006-02-01] Reference