386 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
a dense mass of fallen timber. Although many are often found in the 
same locality, I do not believe that this bird is truly gregarious. Six 
specimens. 
*42. Cercomacra tyrannina Scl. 
tare. Only one specimen shot in the dense forest. 
43. Rhamphocenus rufiventris Bp. 
Common. Prefers dense woods. Climbs around trees like our nut- 
latches. Three specimens. 
Fam. TROCHILID A. 
44. Chrysuronia elicize (Bourc. & Muls.)? 
Rare. Only one specimen. 
|NorE.—An adult male of this species from Sucuya, is so decidedly 
difterent from another from Guatemala (No. 33655, Masagua, Pacific 
coast; O.SALVIN) that should the differences observable prove constant 
the birds from the two countries would undoubtedly prove distinct races. 
The differences may be tabulated as follows: 
Guatemalan specimen: Above dark grass-green, becoming bronzy 
only on upper tail-coverts, which are bronze-green, tinged with cop- 
pery bronze; tail bright bronze-green, with more or less of a green cast 
inalllights. Throat and jugulum rich violet, changing to bluish, but 
never to greenish. Wing 2.05, tail 1.25, culmen .72. 
Nicaraguan specimen : Above bronzy green,.the whole back and wing- 
coverts changing to golden bronze, in certain lights ; upper tail-coverts 
rich copper-bronze, not changing to greenish; tail very brilliant golden 
bronze, with only a very faint green tinge, in certain lights. Throat and 
jugulum rich violet-blue, changing to greenish. Wing 2, tail 1.15, cul- 
men .70. 
An adult female from Costa Rica (No. 91308, A. R. ENDREs) is ex- 
actly like the Nicaraguan specimen, except that the throat and jugu- 
jum are without the blue. 
The locality of the type specimen of C. elicie is unfortunately un- 
known, and upon referring to the original description (in Ann. Soc. 
Agr. Lyons, vol. ix, 1846, p. 314), I am unable to decide which form it 
agrees with best. I therefore hesitate to formally institute a new race 
by giving a name to the one not already provided.—R. R.] 
“45. Amazilia cinnamomea (Less). 
Common. Two specimens shot in dense forest. 
Fam. CAPRIMULGID. 
“46. Nyctidromus albicollis (Gm. ). 
Exceedingly abundant. On bright moonlight nights these birds keep 
up their weird ery from night until morning. 
