482 Bulletin American Museum of Natural History. [Vol. XXII, 



The skull agrees in size and general form with the T. ferruginea group. 

 None of the series of seven skulls is perfect enough to furnish a complete series 

 of measurements, the occipital region in all being defective. Total length 

 (type), 50; palatal length, 26.5; palatilar length, 24; zygomatic breadth, 26; 

 least interorbital breadth, 24.5 ; width of braincase, 19 ; maxillary toothrow, 18 ; 

 diastema, 6; mandibular toothrow, 6; mandible, front border of symphysis to 

 condyle, 34 mm. 



Seven specimens, collected as follows: Lei-Mui-Mon, in the mountains of 

 central Hainan, 5 specimens, Jan. 5-11,1903; Utoshi, i specimen, March 20, 

 1903 ; Hoi-how, on the northern coast of Hainan, i specimen, Jan. 4, 1903. 



This series, with one exception, is exceedingly uniform in colora- 

 tion ; one or two show a little more of a rufescent tinge on the lower 

 back than do the others. The Hoi-how specimen, however, differs 

 from all the others in having the throat tawney ochraceous. It is 

 the youngest of the series, although practically full-grown, and this 

 bright color may be a feature of immaturity, or it may indicate a 

 more richly colored coast form. 



The genus Tupaia appears not to have before been reported from 

 Hainan. Its Hainan representative does not appear to be closely 

 related to any of the previously described forms, it differing very 

 markedly in coloration from any of the species of the mainland, and 

 is still less closely allied to any of the numerous insular forms. 



2 7 . Nyctinomus plicatus Buck. -Ham. 



Five specimens, all adult males, Rintoi, July i, 1904. Very uni- 

 form in coloration. Forearm, 5051' mm. 



28. Rhinolophus hainanus sp. nov. 



Type, No. 26748, $ ad., Pouten, Hainan, July 2, 1904. 



Ears large, broad, rather abruptly pointed, the outer margin slightly emar- 

 ginate below the tip; antitragus large, separated from the outer border of the 

 ear by a deep hollow; noseleaf rather small, pointed; sella nearly quadrate? 

 about twice as high as broad, the basal anterior extension forming an oval cup 

 as in R. mitratus (as described and figured by Dobson, Mon. As. Chirop, p. 42, 

 fig. a); lower lip with three deep grooves. Above the general effect is dark 

 russet brown (in type), varying in different specimens to plain dark brown 

 without rufous tinge ; in detail, in the russet phase the basal three-fourths of the 

 pelage is suffused with fulvous or golden, lightening basally ; in the darker phases 

 the basal rufous suffusion is more or less obsolete, quite disappearing in the dark- 

 est specimens, but is generally pale yellowish gray. Ventral surface similar to 

 the dorsal but much paler. Ears and membranes dark brown. Tail much shorter 

 han the tarsus, the extreme tip slightly projecting beyond the membrane. 



Length of head and body (type), in dry skins, about 55; tail, 16; ear from 

 crown, 1 8, width, 15; forearm, 50; 3d metacarpal, 35; 5th metacarpal, 37; 4th 

 intermediate between them; tibia, 22.3; wing membrane terminates 3 mm. 

 above the tarsal joint. 



