NYCTINOMUS. 353 



of the few species on which observations have been made agree 

 with their structure. 



The majority of the species are American : one genus, Mystacina, 

 is peculiar to New Zealand; another, Chiromeles, with a single 

 species G. torquatus, a large bat almost entirely naked, is found in 

 the Malay Peninsula and islands and may very possibly inhabit 

 Tenasserim ; whilst the only species yet recorded within Indian limits 

 are two forms of Nyclinomus. 



Genus NYCTINOMUS, Geoffroy (1813). 

 Syn. Dinops, Savi ; Dysopes, Riippell nee Illiger. 



Muzzle thick, obliquely truncated, projecting considerably beyond 

 the lower jaw ; nostrils circular or subcircular, directed outwards, 

 forwards and downwards, with slightly projecting margins. Upper 

 lip very thick and vertically wrinkled. Ears thick, large and 

 broad, more or less united on the forehead in front of the eyes ; a 

 straight thickened basal lobe inside the ear-conch. Tragus small, 

 subquadrate. Basal portion of the tail as thick as the thigh. Legs 

 very short ; feet broad, each outer and inner toe thickened on its 

 exterior side by a lateral pad, furnished with a dense tuft of long 

 curly hair. Middle finger much lengthened, its metacarpal bone 

 equal to the whole length of the fifth finger, its first phalanx folded 

 backwards in repose. A well-marked callosity at the base of the 

 thumb. 



Dentition : i. | or |, c. ^, pm. |^, m. |^|. A few species, not 



Indian, have pm. ^^. 



The interfemoral membrane, as in all allied genera, forms a sheath 

 to the base of the tail and can be moved up or down the latter, 

 thus increasing or diminishing the membranous surface. 



The genus Nyctinomus is found in the warmer parts of both 

 hemispheres, one species occurring in Southern Europe. 



Synopsis of Indian and Burmese species. 



Ears not quite united at base ; about half the tail 



free N. tragatus, p. 353. 



Ears united at base ; more than half the tail free . . N. plicatus, p. 354. 



224. Nyctinonms tragatus. Dobson's wrinkled-lipped Bat. 

 Nyctinomus tragatus, Dobson, J. A. S. B. xliii, pt. 2, p. 143 ; id. Mon. 

 As. Chir.-p. 181; id. Cat. Chir. B. M. p. 424; Anderson, Cat. 

 p. 150. 



Ears arising close together from the anterior part of the forehead, 

 but not joined by a band; they extend when laid forward to the 

 extremity of the muzzle or a little beyond it ; upper portion ot the 

 ear-conch regularly convex, almost semicircular; outer margin 

 separated from the terminal lobe or antitragus by a deep notch. 



