220 BULLETIN 2 08, UNITED STATES NATIONAL MUSEUM 



and the dusky malar stripe averaging less distinct from the surround- 

 ing areas. Measm-ements in millimeters: wing 84-90, tail 52-61.5, 

 culmen from base 10-11.5, tarsus 11-13. 



Juvenal (sexes alike) : Similar to the adults, but with the subocular 

 line and the malar stripe very slightly developed, if at all; with the 

 lower throat and the breast duskier — hair brown with an olivaceous 

 tinge — and with the rectrices narrower and more pointed terminally, 

 their dusky terminal markings less extensive. 



Natal down: None. 



Using the above as a standard of comparison, the differences found 

 in the several races of this honey-guide are as follows: 



I, minor senegalensis: Paler beneath, the chin white; throat, breast, 

 and sides of abdomen nearly white; lower abdomen and under tail- 

 coverts white; top of head and nape more grayish. Measurements in 

 millimeters, male: wing 85-89.5, tail 56, culmen 11. 



I. minor pallidus: "Compared with the nominate race, the whole 

 of the underparts is much paler grey and shows a very slight buff 

 wash; as compared with /. c. ussheri Sharpe, the underparts lack the 

 strong olive-yellow wash of that race and the ground colour is distinctly 

 grey, not grey-brown. The crown and nape are also a paler grey than 

 in the nominate race; the grey tone extends further onto the mantle. 

 The olive-golden edging to the feathers of the upperparts is perhaps 

 a trifle paler than in the other races" (Marchant, 1950); bill black, 

 iris brown; feet gray. Measurements in millimeters, female: wing 

 81.5-84, tail 49-53, culmen 10-11, tarsus 13. 



I. m. alexanderi: Similar to /. m. senegalensis but with underparts 

 less pure whitish — smoke gray becoming white on chin, lower abdo- 

 men, and under tail-coverts. Measurements in millimeters: male: 

 wing 88-95, tail 50-61, culmen 9-10, tarsus 13-14 ; female: wing 82-86, 

 tail 47-53, culmen 8-9, tarsus 13-14. (I have not seen enough ma- 

 terial of alexanderi, pallidus, and senegalensis to determine whether 

 they are all constantly different enough to warrant recognition, but 

 for the present I accept them on the strength of Bannerman and other 

 Avriters on West African birds.) 



/. m. ussheri: Entire crown strongly washed with golden olive, the 

 entire underparts pale gray-brown with an olive yellow wash; lores 

 blackish. Measurements in millimeters: male: wing 91-92, tail, 58- 

 61, culmen 10, tarsus 14-15; female: wing 83-85, tail 47.5-49, culmen 

 10.5-12.5; tarsus 16. 



/. m. conirostris: The darkest below, and the most contrastingly 

 streaked above, of all the races; chin, throat, abdomen, sides and 

 flanks deep grayish olive; chin in some specimens, but otherwise only 

 the posterior part of the abdomen and the under tail-coverts, whitish; 

 above with the centers of the feathers darker making the streaking 



