(242 ) 



that the rnmp, njtpcr tail-coverts, thigb, and flanks are rather luore nifescent 

 brown. The back, too, appears to be slightly more brownish green, wiiile the edges 

 to the wing-coverts and remig€;s are deeper rufescent brown. These insignificant 

 variations arc, no donbt, dne to age, for the type of 0. /ii'ai/.Hi is itnraatnre. The 

 middle of the breast and abdomen is decidedly yellowisli, as in No. ~ (S. Jacinto), 

 whereas in the tyi)e of C. simplex the belly is nearly uniform dingy olive-green. 

 I agree with (.'ount Berlepsch that this species, notwithstanding its rather divergent 

 bill, finds its natural place in the genns Caenotriccus. To Ochthoeca it has, as far 

 as I can see, no close relation. 



('.simplex is only known as an inhabitant of the mountains of Northern JBoli via 

 and South-Eastern Peru (Marcapata). 



58. Ochthoeca olivacea Allen = Tyranniscus improbus Sd. k Salv. 



Tijrannkeus imprubus Sclater and Salvin, P. S. Z. Loud. IHTO. p. >H\. pi. uS. fig. 3 (1871. — MtSrida, 



Venezuela (type) ; Ocana, North Colombia). 

 Ochlhoixa oliriiceu Allen, Bull. Amei: Mim. X. II. xiii. p. 152 (1900. — Valparaiso, Santa Marta, 



North Colombia). 



No. 1. Amer. Mus. Nat. Hist., No. 7272!^. Type oi Ochthoeca olieaceus (sic) 

 Allen. Orig. label: "Santa Marta E-xjiedition, 1S98-9'.). Valparaiso, Colombia, 

 April 14, 1800, G. II. Hull." Adult : Wing 04* ; tail oO* ; bill 10 mm. 



This bird is, no doubt, the same as T. improbus, of which the Tring Musenra 

 has a large series from the type locality. In fact, on comi)aring the Santa Marta 

 specimen with fourteen skins from Merida, 1 cannot detect the slightest difference 

 either in colour or size : the back is of exactly the same shade of green ; the 

 darker crown forms a kind of dusky cap; a distinct frontal band and a spot above 

 the browni.sh black anteocular patch are white, the auriculars dark olive-brown ; the 

 whitish superciliary line is inconspicuous, as in an adult male from Valle (January 17, 

 1888); the throat dull white; the foreneck flammulated with jjale yellowish on a 

 light greyish ground, etc. The pale markings on the wing show the same distribn- 

 tion as in Merida examples, but the edges to the median wing-coverts are perhaps 

 more whitish than in the majority of the latter. 



Five adult males from Jlerida measure : wing 61-03 ; tail 52—5.5 ; bill 10-1 1 ram. 



T. improbus inhabits the mountains of Western V^enezuela (Merida) and 

 Northern Colombia (Santa Marta, Ocana). In the north coast ranges of Venezuela 

 it is replaced by T. j/etcrsi Berl. About the charai'ters of this species cfr. Hellmayr 

 and Seilern, Arc/t.f. Xatunj. 78, Abt. A, Heft •">, Seiitember 1012, p. 79. 



59. Ochthoeca jesupi Allen, should be 0. diadema jesupi Allen. 



Ochthwca jesiijil Allen, Bull. Auur. Mus. X.II. xiii. p. 161 (I'JOO.— San Lorenzo, Santa Marta, North 

 Colombia). 



No. 1. Amer. Mus. Nat. Hist., No. 72727, ? imm., S. Lorenzo, 7000 ft.. 

 May 12, 1^:09, Q. H. Hull. 



Type of 0. jesupi Allen. Wing 58 ; tail 40 ; bill llj mm. 



So far as is possible to judge from a single immature specimen, this appears 

 to be a distinct form, most nearly allied to 0. diadema diadema (Hartl.). It 

 resembles the Bogota bird in the coloration of the wings, but may be recognised 



• In the original description the measurements, by misprint, are given as follows : wiug 54 ; 

 tail iC mm. 



