MYRMOBORTJR. 65 



Genus MYRMOBOEUS Cab. & Hein. 



Myrmohorus Cabanis & Heine, Mus. Hein. li. p. 9, 1860. Type 

 Jf. leucophrys (Tsch.). 



Fig. 30. — Myrmohorus leucophrys. 

 t 

 The members that comprise this genus are larger in size than 

 those of the previous one, and are distinguished in having the 

 female plumage enurely different from that of the male. It differs 

 also in the almost entire absence of rictal bristles. The exposed 

 culmen is about three-fifths the length of the tarsus. The wing 

 is rounded, the fourth and fifth primaries longest, the third about 

 equal to the sixth. The tail is rounded at the tip, the outer 

 feather on each side about three-fourths the leng-th of the middle 

 ones. Coloration : male and female different. ' 



390. Myrmoborus angustirostris. 



Sch6mburgk's Ant-Creepek: 



ConopopJi0>/a anyustirostris Cab. in Schomb. Reis. Guian. iii. p. 685, 



1848 (British Guiana). 

 Myrmonax leucophrys (nee Tsch.), Cab. torn. cit. p. 684. 

 Hypocnemis leucophrys (nee Tsch.), Salvin, Ibis, 1885, p. 428 (Bartica 



Grove) ; Sclater, Cat. B. Brit. Mus. xv. p. 288, 1890 (Bartica Grove, 



Takutu River). 

 Hypocnemis angustirostris Brabourne & Chubb, B. S. Amer. i. p. 212, 



no. 2130, 1912. 



Adult male. General colour above and below dark slate-colour ; 

 inner webs of flight-quills dark brown with pale edges ; fore part 

 of the head and a line over the eye greyish white ; sides of face 

 and throat Uniform black. 



VOL. II. F 



