156 BULLETITSr 50, UNITED STATES NATIONAL MUSEUM. 



Genus NESOSPINGUS Selater. 



Nesospingus Sclater, Ibis, 5th ser. , iii, July, 1885, 273. (Type, Chkn-ospingus specu- 

 liferus Lawrence.) 



Medium-sized, plainly colored Tanagers with outermost (ninth) pri- 

 mary shorter than fourth (sometimes shorter than third); coloration 

 plain olive above with a small white spot at base of primaries; whitish 

 beneath. 



Bill subconical, rather stout; exposed culmen nearly two-thirds as 

 long as tarsus, nearly straight basally, gradually convex for terminal 

 half; gonys slightly convex, nearlj- as long as maxilla from nostril; 

 depth of bill at base decidedly greater than its width; maxillary 

 tomium nearly straight, slightly notched subterminally, graduallj' and 

 slightly deflected basally; mandibular tomium slightly convex termi- 

 nally, straight in middle portion, gradually though decidedly convex 

 and deflected basally. Nostril exposed, small, roundish, in anterior 

 end of nasal fossse. Rictal bristles veiy weak, hardly obvious. 

 Wing about three and four-fifths times as long as tarsus, rounded 

 (seventh, sixth, and fifth primaries longest, ninth shorter than sixth, 

 sometimes shorter than seventh), primaries exceeding secondaries by 

 less than length of tarsus. Tail shorter than wing by about length of 

 tarsus, very slightly rounded, the rectrices moderately broad, with 

 firm webs and rounded, though rather narrow, tips. Tarsus decidedly 

 longer than middle toe with claw; lateral claws reaching about to base 

 of middle claw; hind claw shorter than its digit, stronglj' curved. 



Coloration. — Above plain grajdsh brown, with white spot at base of 

 primaries; beneath white, slightly flecked on breast with grayish. 



Range. — Island of Porto Rico, Greater Antilles. (Monotypic.) 



NESOSPINGUS SPECULIFERUS (Lawrence). 

 PORTO EICAN TANAGER. 



Adults {sexes alike). — Pileum, hindneck, sides of neck, and sides of head 

 (down to upper margin of malar region) dusky olive-grayish, the pileum 

 and hindneck and sides of head less dusky, the first more or less distinctly 

 streaked with blackish ; back, scapulars, rump, upper tail-coverts, and 

 tail plain olive; wing-coverts and secondaries similar but slightly more 

 grayish, especially the greater coverts; primaries dusky, edged with 

 grayish olive or olive-grayish, the sixth, fifth, and fourth with outer 

 webs white at the base, showing beyond the primary coverts as a small 

 spot; under parts, including malar region, white, changing to light 

 grayish olive on sides and flanks; chest more or less flecked with olive- 

 grayish; under tail -coverts pale fulvous, with central sagittate markings 

 of dusky olive or brownish; maxilla dark brown or brownish black, 

 mandible paler horn brownish; legs and feet (in dried skins) grayish 

 duskj' (bluish gray in life?). 



