Cory—The Genus Rhynchocylus. 219 
Rhynchocycins cinereiceps cimereiceps 3«:127-1,. 
Cyclorhynchus cinereiceps 3<_ater, Thiz, 1559, p. 443 (Oaxaca, 3. Mexico). 
Range: Southern Mexico (in states of Vera Craz; Oaxaea; Yucatan; 
Quintana Roo and Chiapas); Guatemala; Honduras; Nicaragua; Costa Rica 
and Panarna. 
Rhynchocyclus cimereiceps asemus (Banz: - 
Rhynchocyclus sul phurescens asemus Bangs, Proc. Biol. $+. Wash , XXII, 
1910, p. 7: “Pavas, W. Colombia). 
Range: Western Colombia (Pavas; Dabeiba; Puerto Valdivia; Rio Frio; 
Miraflores; Cali and Jimimez). 
Rhynchocycius peruvianus peruvianus Taczanowski.? 
Bhynchocydus peruvianus Taczanoa:ki, P. Z. 5. Lond, 1574. p. 537 
(Bopaybamba, C. Peru). 
Rzg-: Central and northern Peru (except in extreme r-urthwestern 
part). 
Rhynchocyclus peruvianus zquatorialis Berlepsch & Taczsnowski.? 
Rhynchocydus perucianus subsp. wypuatorialis Berlepsch & Taczanowski, 
P.Z. >. Lond, 1883, p. 556 ‘Chimbo 2ni Guayaquil, W. Ecuador). 
Range: Western Ecuador and extreme northwestern Peru, near boundary 
line (Lechugal). 
Bhynchocyelu: marginatus marginatus Lawrence. 
Bhynchocyclus marginatus Lawrence, Proc. Acad. Nat. <i. Phila., 1868 
(1569,, p. 429 (Lion Hill, Panama). 
Range: Eastern Costa Rica Carrillo; El Hogar); Panama; western Co- 
lombia (Puerto Valdivia; Barbacoa:; Buena Vista; Narino). 
LB. ¢. asemus is cimilar wo ER. ¢. cinerciceps of Central America, but differs im having the 
chest more tinged 312 yellowieh and im itz larger size (average measurements of wing— 
aaemes aborat 67 mun, cine: 6414 mm). It differs from R. ¢. exortivus of the ~anta 
Mart: region, ete., in its darker and grayer cap; back darker olive green; throat and chest 
grayer. The wing averages somew ce: lonz-: ‘Type exacsined) This form, to my mind, 
is dearly a representative of cinerciceps and not closely allied to sulphureacens. The type 
specimen is by far the largest of any specimens examined (wing 7) «=. but two examples 
trex. Jiminez have the wing 67 mm. and 68 mm. Dr. Chapman, Bull Amer. Mua Nat. 
Hiet., XXXVI. 1917, p. 434, calls attention to the sx: 2ller =z of specimens examined from 
Dabeiba, Cali, Rio Frio and Miraflores, in which the wing mcasurements averaged 66.5 mm. 
2B. p. perusionus Taczanowski approaches R. c. cinerciceza, but size decidedly larger; 
beek bright olive green; a blackish auricular spot. Type—wing 60; bill 15 mm. I have 
iE. p. em. ~rialis is similar to Ep. perucis from central Peru, but decidedly amalier 
and differs iz. having the back and edges of remiges brighter olive green; yellow area of lower 
belly more extensive. Ti74—= rz 65; tail 60; bill 15. Hartert & Goodson, Novit. Zool, 
XXIV, 1917, p.415, aay they examined a aecimen from western Ecuador ami it differed from 
B. ¢. cinerciceps only in ite slightly darker gray bead and les extended gray throat. and that 
a Persviam skin (no definite locality given) lab<lled B. s. peruwi did not to differ 
from the Eeuadorian specimen. ee 
the original deseription I suspect equatorialis will be found to be a rep 
cepe and clase 10 aeemua. 
