The metabolic fate of C-methanol and l-C-ethanol in the adult larva of Prodenia litura has been investigated in vivo. Following the intersegmental injection of C-methanol (1.2 mg/g. insect), about 70% of the radioactivity was recovered as C02 in the expired air, after 20 hours. Also, about one fourth of the administered dose was recovered as unchanged methanol, during the first six hours. Only ...