the wandering garter snake, Thamnophis elegans vagrans. Toxicon 19:831-839. , S. P. MACKESSY, AND K. V. KARDONG. 1991. The unique Duvernoy's secretion of the Brown Tree Snake (Boiga irregularis). Ibid. 29:532-535. WEINSTEIN, S. A., D. CHISZAR, R. C. BELL, AND L. A. SMITH. 1991. Lethal potency and fractionation of Duvernoy's secretion from the brown tree snake Boiga irregularis. Ibid. 29:401-407. YOSHIE, S., M. ISHIYAMA, AND T. OGAWA. 1982. Fine structure of Duvernoy's gland of the Japanese colubrid snake, Rhabdophis tigrinus. Arch. Histol. Japan 45:375-384. --, T. OGAWA, AND T. FUJITA. 1988. Histochemical, immunohistochemical, and ultrastructural characteristics of nerves in the Duvernoy's gland of the Japanese colubrid snake, Rhabdophis tigrinus. Arch. Histol. Cytol. 51:459-466.