THE MOST REMARKABLE SPECIES 169 



yond its end. The muzzle is rather blunt, and the nostrils 

 open beyond the upper lip. 



THE BONNETED BAT, 1 of California and Mexico, is one 

 of the largest of our species of free-tailed bats. Above the 

 shoulders it looks like a rat wearing a poke bonnet. Its 

 head-and-body length is %% inches, tail 1M, total length of 

 ear, \% inches. One-half the tail is free. 



THE NAKED BAT, 2 of Borneo, Java, and Sumatra, is one 

 of the most remarkable species of the entire Order of Bats, 

 and in some respects is the widest departure from the typical 

 bat. In the interior mountains of Sarawak, Borneo, I once 

 secured ten fine specimens, and to me they are as wonderful 

 to-day as when handled for the first time. 



As its name implies, this bat is practically destitute of 

 hair, the only hair noticeable being a few stiff, black bristles 

 on the neck, and a little microscopic fuzz on the breast and 

 hind quarters. The skin is thick and leathery, lying in nu- 

 merous creases and folds, and on the living animal it is 

 very elastic. There is no nose-leaf, and the lips are very 

 thick and fleshy. The tail is free of parachute membrane 

 for two-thirds of its length, and is quite like the tail of a 

 mole. On the joint at the base of the thumb there is a 

 large, callous tubercle, which indicates that this bat is much 

 given to crawling about on "all fours," on rocks and tree- 

 trunks. 



Around the neck the skin lies in two thick folds, and 

 in these, directly under the chin, is situated a deep gland 

 or sac which secretes a gummy substance with an odor both 



1 Pro'mops cal-i-for'ni-cus. * Chei-ro-me'les tor-qua'tus. 



