A body is brought to you for autopsy. The apparent cause of death is snake bite. On examination there is a haemorrhagic region surrounding a puncture mark over his left shoulder region. The area surrounding the puncture mark is necrosed and subsequent examination of his stomach contents and blood revealed that he had consumed significant amount of alcohol just prior to death. Since he is an officer working in a city you suspect foul play. Poisoning with which of the following resemble a viper snake bite?