194 DR. R. W. SHUFELDT ON THE COMPARATIVE [Mar. 3, 



spots are subapical, two spots being close together below the fifth 

 subcostal nervule, the second between the first radial, while the 

 third is a little further off near the hind margin, below the second 

 radial nervule. 



Hind wing black, enclosing a large yellow area which reaches 

 from near the base of the wing, spreads over the cell, and occupies 

 the basal third of the disk. 



Underside. Fore wing dusky, the apex somewhat reddish ; the 

 base buff' chestnut, extending along the basal edge of the costal margin. 

 The white spots of the upper surface indicated by pearly-white spots 

 below. 



Hind wing. Bright chestnut at the base, with tiny dots of black, 

 followed by a yellow mesial area, almost coextensive with the same 

 area on the upper surface, but reaching to the inner margin of the 

 wing behind the chestnut, which has sharply quadrate borders on its 

 hinder aspect ; the whole of the hind margin bronzy brown with a 

 reddish tinge, forming a very broad band, the nervules marked by 

 black lines, with a mesial line of black between each nervule to the 

 hind margin. 



Exp. 2^ inches. 



Hub. Mount Elgon, Feb. 1890. 



DESCEIPTION OF THE PLATES. 

 Plate XVI. 



Kg. 1. Papilio mackinnojii, sp. n., p. 187. 



2. Mylothris wintoniana, sp. n., p. 189. 



3. Mylothris jacksoni, sp. u., p. 190. 



4. Belenois margaritacea, sp. n., p. 191. 



5. Mylothris mackenziana, sp. n., p. 190. 



6. Teracoliis elgonensis, sp. n., p. 191. 



Plate XVII. 



Fig. 1. Tainlio jacksoni, sp. n., c?, p- 188. 



2. Papilio jacksoni, sp. n., J , p. 188. 



3. Acrcea excelsior, sp. n., p. 192. 



4. Acrma melanoxantha, sp. n., p. 193. 



5. Acrcea areas, sp. n., p. 193, 



3. On the Comparative Osteology of the United States 

 Cnlumbidce. By E. W. Shufelut, C.M.Z.S. 



[Received February 2, 1891.] 



Opportunity has recently been afforded me to compare together 

 examples of the skeletons of the following species of Pigeons of our 

 avifauna, viz. : — Ectopistes migratorius, Zenaidura macroura, Engy- 

 ptila albifrons, Melopelia leucoptera, Colimibigallina passerina, Scar- 

 dojella inca, and Starncenas cyanocephala. I have also had at hand 

 during this work skeletons of several of our domesticated varieties, a 

 large series of skeletons of nearly all our gallinaceous birds, and the 

 published accounts of the osteology of many forms of columbine 



