A new species of the Hipposideros bicolor group (Chiroptera: Hipposideridae) from Thailand J. E. Hill Department of Zoology, British Museum (Natural History), Cromwell Road, London SW7 5BD, United Kingdom Songsakdi Yenbutra Thailand Institute of Scientific and Technological Research, Bangkhen, Bangkok 9, Thailand While Curator of Terrestrial Vertebrates at the Thai National Reference Collection (now a part of the Thailand Institute of Scientific and Technological Research) the late Kitti Thonglongya undertook a survey of the bats of Thailand and their associated parasites, col-lecting extensively throughout the country. For the most part the bats that he collected were reported on the basis of a broad sample by Hill (1975). Those sent to London for examination included an example of Hipposideros from Rat Buri (TNRC 54-2080, now BM(NH) 78.2344) initially referred to H. ater Templeton, 1 848 but which proved to diifer quite clearly either from this species or from H. cineraceus Blyth, 1853 which in some superficial respects it resembled. No further study was undertaken at the time, Hill (1975) listing it as Hipposideros sp. but noting that it could not be referred to ater or to cineraceus from which it differed in certain features of the noseleaf and skull, or in size. Further similar specimens have now been found in the Thai National Reference Collection and more detailed study has established that all represent an undescribed species: additionally, another example in London (BM(NH) 78.2346, formerly TNRC 54-1961) proves also to represent the new species, rather than H. cineraceus as was thought originally. Hipposideros halophyllus sp. nov Hipposideros sp.: Hill, 1975: 27, Rat Buri, Thailand. Hipposideros cineraceus: Hill, 1975: 29 (in part), Phet Buri, Thailand; Lekagul & McNeely, 1977: 165 (in part), fig. 6 1 . HOLOTYPE. rf TNRC 54-3694. Khao Sa Moa Khon, Tha Woong, Lop Buri, Thailand. Collected by Kitti Thonglongya. In alcohol, skull extracted, rear of cranium slightly damaged. OTHER MATERIAL EXAMINED IN LONDON, rfd 1 , 9 TNRC 54-3696, 54-3697, 54-3705. All from the type locality. In alcohol, skulls extracted. rf BM(NH) 78.2344. Tham Khao Bin, Rat Buri, Thailand. Originally TNRC 54-2080. In alcohol, skull extracted. d 1 BM(NH) 78.2346. Tham Khao Yoi, Phet Buri, Thailand. Originally TNRC 54-1961. Skin and skull. OTHER MATERIAL EXAMINED IN BANGKOK. 33 TNRC 54-3695, 54-3706, 99 TNRC 54-3704, 54-3710. All from the type locality. In alcohol, skulls of TNRC 54-3695, 54-3710 extracted. DIAGNOSIS. A member of the bicolor group (Hill, 1963) of Hipposideros, characterized exter-nally by large rounded ears lacking any sharply defined point or any definite fold or thicken-ing at the antitragal lobe; by the absence of lateral supplementary leaflets beneath the an tero-lateral margin of the anterior leaf, which has a shallow median emargination, and by the expansion of the internarial septum to form a small, disc-like structure just anterior Bull. Br. Mus. nat. Hist. (Zool.) 47(1): 77-82 Issued 28 June 1984 77
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