Ridgway — Diagnoses of New Forms of Neotropical Birds. 195 



13. Formicarius moniliger panamensis subsp. nov. 



Type from Panama (Lion Hill Station?); No. 5:;, 771), coll. U. S. National 

 Museum; adult male; J. McLeannan. 



Similar to F. moniliger hoffmanni (Cabanis), of southwestern Costa 

 Rica and northwestern Panama, hut averaging smaller, and coloration 

 constantly lighter, with under parts strongly suffused with olive and huffy 

 and color of under tail-coverts lighter, more tawny. Length (skin), 

 169.5mm. ; wing, 87; tail, 55; culmen, 21; tarsus, 30; middle toe, 18.5. 



14. Delattria henrica salvini subsp. nov. 



Type from Galderas, Volcan de Fuego (7,000 to 8,000 ft.), Guatemala; 

 No. 4(i,304, American Museum Natural History; September, 1873; Osbert 

 Salvin. 



Much darker than D. henrica henrica ; similar in general coloration to 

 D. henrica brevirostris , but smaller, with relatively longer hill, the dusky 

 auricular-suhorhital area much darker (brownish-black), the post-ocular 

 streak much broader, pure white, and margined above by a line of black. 



Adult male (type).— Length (skin), 110mm.; wing, (17; tail, 40.5; ex- 

 posed culmen, 20. 



An adult male in the Biological Survey collection, from San Cristobal, 

 Chiapas (No. 155,236, U. S. National Museum, September 17, 1895, Nel- 

 son and Goldman), is referred provisionally to this form. It agrees in 

 coloration with the type, but is smaller, measuring as follows: Length 

 (skin), 106mm.; wing, 63.5; tail, 38.5; exposed culmen, 19. 



15. Delattria henrica brevirostris subsp. nov. 



Type from San Sabastian, Jalisco, western Mexico; No. 155,982, U. S. 

 National Museum (Biological Survey collection ) ; adult male ; March 17, 

 1897; Nelson and Goldman. 



Similar to D. henrica henrica, of southeastern Mexico (States of Vera 

 Cruz and Oaxaca), but with bill relatively much shorter, color of under 

 parts darker and more uniform (deep mouse gray or brownish slate gray), 

 and feathers of throat with whitish margins much narrower and less dis- 

 tinct. 



Length (skin of type), 118mm. ; wing, 70; tail, 44; exposed culmen, 19. 



16. Stenopsis tobagensis sp. nov. 



Type from Tobago; No. 74,877, coll. U. S. National Museum; adult 

 male; F. A. Ober. 



Similar to S. insularis Richmond,* in possessing a single narrow dusky 

 band across the middle of tail and in having the inner webs of all the 

 rectrices except middle pair mostly white, but coloration much darker 

 and less buffy, wing longer, and tail decidedly shorter. Differs from S. 

 cayennensis in lighter coloration, much greater amount of white on lateral 

 rectrices, and in shorter wing and tail. Wing, 137mm.; tail, 113; culmen, 

 13; tarsus, 16; middle toe, 15. 



• Stenopsis cayennensis insularis Richmond, Proc. Biol. Soc. Wash., XV, June 25, 

 1902, 159 (Curacao; coll. U. s. Nat. Mus.). 



