BIEDS OF ETHIOPIA AND KENYA COLONY • 407 



the typical form may be suggested by the following data of the 

 present series : 



Males : Wing 380-385, tail 288-320, culmen from the posterior mar- 

 gin of the casque 197-205, and casque 183-202 millimeters. Females : 

 Wing 345-353, tail 266-270, culmen (as in male) 161-164, and casque 

 93-94 millimeters. 



The southern race, hrevis, has the wing length varying from 

 345-360 in the males, from 321-333 millimeters in the females, while 

 two intermediate males have wings of 370 and 377 millimeters, 

 respectively. 



Several specimens of the present series are molting the remiges 

 and rectrices, but in no specimen is the molt in an advanced stage. 

 However, it indicates that the wing molt begins at the carpal joint 

 and that if there is a second, more distal ecdysial center in this species, 

 as in some other hornbills, it does not appeaft- until after the molt has 

 begun at the first one. The tail molt is irregular, the single rectrix 

 shed and replaced in each of the molting birds being different. One 

 of the birds is molting the upper tail coverts. 



Mearns noted that the male collected on February 23, in the Arussi 

 Plateau, was probably breeding in a grove on the open plain at 8,500 

 feet (2,550 meters), and that several groves were occupied by birds 

 of this species. Neumann ^"^ writes that this species occurs in high- 

 lands between the altitudinal limits of 1,800 and 2,500 meters 

 (roughly 6,000 and 8,300 feet) and prefers the forested country. In 

 the lowlands and above 2,700 meters (about 9,000 feet) the species is 

 absent. Erlanger "^ writes that a male collected on March 26 near 

 Gara-Mulata had the gonads much enlarged, and that the breeding 

 season therefore appeared to be at that season, a statement which 

 indicates that Mearns ma}^ well have been correct in his surmise that 

 the Arussi bird was nesting in late Februar}^ Farther south, ac- 

 cording to Sir Harry Johnston's observations on Mount Kilimanjaro, 

 the species (subspecies hrevis) breeds in August and September. 

 However, Sjostedt "^ took a young bird from the nest on Kilimanjaro 

 on December 17, so the season is probabW a prolonged one there. 



, LOPHOCEROS NASUTUS NASUTUS (Linnaeus) 



Buceros iiasutus Linnaetjs, Syst. Nat., ed. 12, vol. 1, p. 154, 1766: Senegal. 



Spechnens collected : 



One female adult, Duletcha, Ethiopia, January 24, 1912. 

 Two male adults, one female adult, Sadi Malka, Ethiopia, Feb- 

 ruary 3, 1912. 



■•'" .J.Hiin. f. Oinith., 1905, p. 187. 



»» IilPiD, p. 444. 



=" Kilimanjaro-Meru Exp., 1910, vol. 1, p. 93. 



