80 BULLETIN 99, UNITED STATES NATIONAL MUSEUM. 



LAVIA FRONS AFFINIS Andersen and Wronghton. 



1907. Lavia/rom affinis Andersen and Wroughton, Ann. and Mag. Nat. Hiflt., 



ser. 7, vol. 19, p. 140. February. (Kaka, White Nile; type in British 



Museum.) 

 1910. Laviu frons affinis Roo.^iiVKLT. African Game Trails, Amer. ed., p. 474; 



London ed., p. 486. 

 1910. Lavia frons Roosevelt. African Game Trails, Amer. ed., p. 487; London 



ed., p. 498. (Part.) 



Specimens. — Sixty, from tlio following localities : 



Sudan: Renk, 2 in alcohol (Mearns) ; Shambe, 2 in alcohol 

 (Heller) ; White Nile below Lake No, 2 in alcohol (Mearns) . 



Lado: Rhino Camp, 47, including 25 in alcohol (Loring, Mearns). 



Uganda: Gondokoro, 1 in alcohol (Mearns); Mnyouri Jardin, 1 

 (Loring) ; Niniule, 4, including 3 in alcohol (Heller) ; Uma River, 1 

 in alcohol, (Mearns). 



In addition to the accompan^ang table of measurements of skins 

 and skulls of Lavia, the following dimensions of forearms of alcoholic 

 specimens of the two races are presented: 



Lavia frons rex. 



Southern Guaso Nyiro River: 60, 62, 59, 60, 57, 60, 62. 



Ulukenia Hills: 58, 60. 



Sotik: 58, 62. 



Kisumu: 62, 60. 



Average, 60. 



Lama frons ajfiiiis. 



Nimule: 56. 



Rhino Camp: 60, 56, 58, 59, 61, 58, 56, 59, 59, 58, 58, 59, 60, 62, 58. 



Gondokoro: 56. 

 • Renk: 57, 59. 



Uma River: 58. 



Average, 58, 



For complete table of measm'ements see pages 78-79. 



Colonel Roosevelt, in African Game Trails,^ has the following notes 

 on this bat, as he observed it in the Lado : 



They were very abundant, hanging in the thinly leaved acacias around the tenta, 

 and, as everywliere else, were crepuscular; indeed to a large extent actually 

 diurnal in habit. They saw well and flew well by daylight, passing the time hang- 

 ing from twigs. They became active before sunset. In catching insects they 

 behaved not like swallows but like flycatchers. Except that they perched upside 

 down, 80 to speak — that is that they hung from twigs instead of sitting on them — 

 their conduct was precisely that of a phoebe bird or a wood peewee. Each bat hung 

 from its twig until it espied a passing insect, when it swooped down upon it, and 

 after a short flight returned with its booty to the same perch or went on to a new one 

 close by; and it kept twitching it.s long ears as it hung head downward devouring its 

 prey. 



> African Game Trails, p. 399. 1910. 



