BIRDS COLOPTERIDAE — ^BATHMIDUKUS MAJOR. 



165 



roseicoUis of Bolivia. The former, however, is of a nearly uniform sooty brown above and 

 below, with a narrow rosy bar on the throat. The latter also is mucli darker below, being 

 ashy black (rather lighter than in P. pectoralis) instead of rather light ash. The rose color of 

 the throat, too, appears to be narrower. According to Lafresnaye, the roseicoUis has a longer 

 bill. 



The abbreviated second primary has the sides parallel to near the acutely pointed tip, which 

 is internally emarginated. The notch, however, is not so deep as in the figure of P. viridis, 

 given by Mr. Sclater. It has a slight trace of white on the outer edge. 



According to Mr. Sclater, the female is reddish, the wings black internally ; their margins 

 and the entire tail bright rufous ; the crown black ; the finder parts whitish cinnamon ; the 

 under wing coverts cinnamon. 



The specimens of this species collected by Lieutenant Couch are appreciably larger than 

 those described by Mr. Sclater from southern Mexico. 



List of specimens. 



BATHMIDURUS, Cabanis. 



Bathmidurus, Cabanib, Wiegm. Archiv, 1847, i, 243. 



Head crested ; bill considerably broader than high just behind the nostrils ; rictal bristles short, not half the length of culmen. 

 Posterior half of tarsus covered externally and behind with angular plates, internally entirely naked. First quill (in female) 

 about equal to the fifth. Tail much graduated ; the featliers narrow . Male with abbreviated broad second primary. 



There are many features in this genus (as far as I have been able to establish its character on 

 the female of the single species,) to distinguish it from the preceding. The most conspicuous 

 of these is the much graduated tail, the outer feathers being .65 of an inch shorter than the 

 inner three on either side which are nearly equal. The feathers, too, are considerably narrower 

 than in Pachyrhamphus. The bill is shorter and considerably broader and more depressed at 

 the base ; the culmen not quite so acutely marked ; the bristles short. The nostrils are very 

 small and much concealed. The edge of the first primary in both genera is emarginated near 

 the end of the inner web ; the first quill is much longer than in the preceding, being equal to 

 the fifth, instead .of shorter than the sixth. The tarsi are quite different in the complete naked- 

 ness of the entire inner face, and almost so on the posterior edge. The outer side behind is covered 

 with polygonal plates ; the inferior extremity behind with strong granulations. 



BATHMIDURUS MAJOR, Cabanis. 



Bathmidurus major, Cabanis, Wiegmann's Archiv, 1847, i, 246. 

 Psaris marginatus major, Kauf, Pr. Zool. Soc. 1851, 48. 

 Pachyrhamphus major, Sclater, Pr. Zool. Soc. 1857, 78. 



Female. — Above light chestnut brown ; the top of the head glossy black mixed with rufous j beneath light yellowish brown ■ 

 the middle of the belly tinged with greenish yellow. Quills dark brown, edged on both webs with rufous j tail feathers mostly 

 black ; the tips, outer edges, and basal portions rufous ; the middle feat) ers like the back. Length, 6.25 ; wing, 3.25 ; tail 2.75. 



