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Show 182 MR. G. A. BOULENGER ON NEW REPTILES [Mar. 6, American. Papilio asterias. Papilio turnus. philenor. ajax. troilus. Limenitis disippus. cresphontes. Nocturnal Lepidoptera. *Hemaris ruficaudis. Deilephila alecto. * Everyx chcerilus. euphorbia*. Acherontia atropos. elpenor. * Sphinx ligustri. Smerinthus rnodestus. lucitiosa. ocellatus. Ceratomia undulosa. tilice. amyntor. * Exhibited for the first time. Of the Lepidopterous Insects which I have the honour to place before the meeting, Hemaris ruficaudis and Everyx chcerilus, from North America, and Lenodora nigrolineata, from South Africa, were exhibited for the first time during the past season. I regret that, owing to my absence for some time in the early summer, I ara not able to exhibit a larger series of set specimens. The following papers were read :- 1. Descriptions of new Reptiles and Batrachians from Borneo. By G. A. B O U L E N G E R , F.R.S. [Received January 29, 1900.] (Plates XIV.-XVII.) For a knowledge of the Reptiles and Batrachians here characterized for the first time, I a m indebted to the kindness of Mr. R. Shelford, Curator of the Sarawak Museum, by w h o m they were suspected to be undescribed, and who has submitted them to me with a request that I should publish descriptions of such as might prove to represent new species. Some of the types had to be returned to the Sarawak Museum, whilst others have been retained for the British Museum. LYGOSOMA SHELFORDI. (Plate XIV. fig. 1.) Section Hinulia. Habit lacertiform ; the distance between the end of the snout and the fore limb is contained once and two-fifths in the distance between axilla and groin. Snout short, obtusely pointed. Lower eyelid scaly. Nostril pierced in a single nasal; no supranasal; rostral forming a straight transverse suture with the frontonasal, which is as long as broad; inner angles of prefrontals meeting; frontal narrow, as long as frontoparietals and |