N0.13M. A REVIEW OF THE TROGLODYTES— OBERIWLSER. 207 



from other lociilities, some iiidividiuils lieing- g-ra3'i.sli iil»()\('. others 

 (juite rufesc-ont, iiiid from iiornudly ;diiiost pun* white iiiediidlv ludow 

 to <(ui(e lunform ochraceous. Birds from the ishmd of Triiddad are 

 intermediate lu'tween cJarus. uiid tohat/ensts, )nit so much iieai'er liio 

 former that there is no doubt of their ])ro])ei' reference to that form. 



TROGLODYTES MUSCULUS ATOPUS, new subspecies. 



(7i(//'s. .s//A.sy>. Similar to J r<>[il<)dijt<!< m n-scul ux chiriis^ l>ut smaller, 

 the entire ventral surface more deeply ochi-aceous. particularly on the 

 sides and Hanks. 



(reoijrupliK'd] t//'.sfri//i(ff(/ji. —^iiutsx Marta ret^ion, Colombia. 



Descript !())!. —Type, adult male, No. 70478, American ]Museum of 

 Natural History; Cacagualito, Santa Marta, Colombia, Ma}' IG, 1898; 

 Mrs, H. 11. Smith. Tpper surface dull brown, becomino- chestnut on 

 the rum}) and ui)per tail-coverts, these both and the back with ol)soletc 

 narrow t)lackisii l)ars; tail dull chestnut with numerous blackish bars; 

 exposed surface of closed wing's similar to the back, and with fuscous 

 crossbars; an ill-detined bull" superciliary stripe; sides of head buff 

 mixed Avith brown; throat M^hite, with a ))uffy tinge; l)reast dull ochra- 

 c(H)us luiti"; sides, flanks, and crissum dull rufous, the last with irreg- 

 ular l)ars of ])la('kish; center of abdomen dull })ufl'; under wing-coverts 

 dull l)uft'v white. Length of wing, .51 nun.; tail, 39 nun.; exposed 

 culnien, 11 nnn.; tarsus, 19 mm.; middle toe, 18 ram. 



Although as Avith many of the other forms there is in this one nuicli 

 individual variation, the majority of specimens are quite different from 

 rldfiiK. to which apparently atopu^ is closely allied. From tccellafus^ 

 which it even more closely approaches, it may be distinguished ))y its 

 usually heavily mark(>d crissum and somewhat lighter upper surface. 



TROGLODYTES MUSCULUS ALBICANS i Berlepsch and Taczanowski). 



TriMjUidyU'K fari-Hs itlhiatiis liKKiJoi-scir and Tac/anowski, Proc Zool. .Sue. Loml., 

 1888, p. 540! 



Type locallt;/. — Guayacpiil, Ecuador. 



Geographical dhtrihnt'wn. — Ecuador, and possil)ly northern Peru. 



A pale form, which comes very close to TroghxJi/fis ihk.sckJuk cl((ri(s^ 

 but which dillers in having plain lower tail-coverts. A specimen 

 in the collection of the Philadelphia Academy of Natural Sciences, 

 marked "•Peru," seems to be intermediate betw(>en 7\ m. alhlcaits 'M\d 

 T. III. r<M\ though neai"(M" the former. 



TROGLODYTES MUSCULUS ENOCHRUS, new subspecies. 



C/ia/'s. .sv/Zi.sy>.- Similar to 7ri>(//"t/i//rs nKi.srii/iis tiViUafa^^, l)ut paler 

 above, the ])ack, rump, and upper tail-coverts not barred with dusky 

 or blackish; very decidedly lighter l)elow. the center of throat and 

 of abdomen whitish. 



