182 MB. G. A. BOULENGEB. ON NEW REPTILES [Mar. 6, 



American. 

 Papilio asterias. Papilio turnvs. 



philenor. ajase. 



troilus. Limenitis disippus. 



crespTwntes. 



Nocturnal Lepidoptera. 



*Hemaris ruficaudis. DeilepMla alecto. 



*Eve.ryx chcerilus. euphorbia. 



Acherontia abropos. elpenor. 



Sphinx lignstri. Smerinthus modegtus. 



lucitiosa. ocellatvs. 



Ceratomia undulosa. tilias. 



amyntor. 



* Exhibited for the first time. 



Of the Lepidopterous Insects which I have the honour to 

 place before the meeting, Hemaris ruficaudis and Everyx cluvrilus, 

 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 am 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. Boulenger, F.R.S. 



[Eeceived January 29, 1900. J 

 (Plates XIV.-XVII.) 



For a knowledge of the Reptiles and Batrachians here cha- 

 racterized for the first time, I am indebted to the kindness of 

 Mr. R. Sh el ford, Curator of the Sarawak Museum, by whom 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 Hinvlia. 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 pre- 

 frontals meeting ; frontal narrow, as long as frontoparietals and 



