328 ZOOLOGY. 



69. T. erythrorhynchus (Temm.). 



Bvxeros erythrorhynchus, Temm. PI. Col. ii. p. 59. — Ferr. et Gal. 



No. 41. 

 Buceros (Alophius) irythrorhynchus, var. leucopareus, Hemp, and 



Ehr., Symb. Phys. 

 Tockus erythrorhynchus, Eiipp. Syst. Uebera. No. 322.— Brehrn, 



Habesch, No. 108. 



Iris brown, skin in front of the eye pale yellow, bill 

 dull red, base of lower mandible dusky beneath, legs 

 dusky. 



Except the colour of the iris and biU, and the shape of 

 the latter, there is very little to distinguish this HornbiU 

 from the last. T. erythrorhynchus, however, inhabits 

 a lower zone of elevation in general than its congener. 

 The two occurred together about Mayen (3,500 feet) 

 in the Senaf^ pass, in January and February, but T. 

 erythrorhynchus was also found in Samhar in July 

 and August. It was also common throughout the Lebka 

 valley and on the Anseba, but I never saw it on the 

 highlands. 



In July and August these birds were very lively. 

 Their call is something like " whoot-whoot-whoot-whoot- 

 whoot-tawut-tawut-tawut-tawut - tawut," increasing in 

 intensity and rapidity and rising in the scale towards 

 the end. Measurements : — 



Wini^ Tnil Bill, nostril Bill, gapo Height of bill : 

 wing. lau. j^j..p_ to tip. across nostril. 



In. in. in. in. in. 



Male 7-4 9 3-15 3'8 1 



Female 7-2 87 2-45 3'1 0-95 



