246 [August, 



This bird may readily be distinguished from the larger L. gutturalis , of which 

 we have specimens also, by the characters above indicated, and especially by its 

 yellow abdomen. 



4. Drynscopus suhladeus, nobis. 



Form. Bill and legs rather long, wings rounded with the fourth to the 

 eighth quills nearly equal and longest, plumage of the rump downy and profusely 

 developed. Somewhat larger than D. Gamhejisis (Licht.) 



Dimensions. Total length of skin from tip of bill to end of tail, about 1\ 

 inches, wing 3i, tail 2,\ inches. 



Colors. Adult. Entire plumage of the head and body above, wings and tail 

 glossy black ; downy plumage of the rump grayish white at base and tipped with 

 black, (as in D. rufiventris (Swainson) Le Vaill. Ois. d'Af. pi. 68, and D. ethio- 

 picus, (Gm.) Rupp. Uebersicht, pi. 23.) 



Under plumage entirely very pale ochraceous white or cream color, deepest on 

 the flanks, (same color as in D. ethiopicus.) No white markings on the wings 

 nor other part of the plumage. 



Bill black, tarsi paler. 



Hab. Eastern Africa? 



Obs. A. general resemblance exists between the bird now described and seve- 

 ral other species of Dryoscopus, but it is peculiar in having the fine cream-colored 

 under surface of the body, and no white marks whatever on the wings. 



5. Dryoscopus atrialatus, nobis. 



Form. Bill long, wings with the fourth quill longest, tail rather long and ample. 

 Generally similar to D. affinis (G. R. Gray,) but is larger, being about the size 

 of D. Gamie7isis (hicht.) 



Comparative Dimensions. 



D. atrialatus. D. affinis. 

 Total length of skin from tip of bill to end of tail, about H 6i inches, 



wing, 4 3i 



tail, 3J 21 



Colors. Adult. Very similar to those of JD. affinis (G. R. Gray) and gene- 

 rally to those of Chaiinonotus Sabinei (J. E. Gray.) 



Entire upper surface, except the rump, deep black ; under parts and rump 

 white. Wings clear black, with no white edgings or tips to either quills or 

 coverts, tail black, shafts of the feathers white at base beneath, bill black, tarsi 

 brown. 



Inferior wing coverts black, (white in D. affinis.) 



Hab. Eastern Africa ? 



Obs. One specimen only of this bird is in the Rivoli collection. It was labelled 

 " L. Sabinii," having evidently been mistaken for Cha^monotus Sabinei above 

 alluded to, which has recently been added to the collection of the Academy, but 

 from which the bird now described is generically distinct. It is very similar to 

 D. afBnis, but may readily be distinguished by its larger size and black inferior 

 wing coverts. 



