ONCOSTOMA.— LOPHOTEICCFS. 15 



A species of the hotter parts of the State of Vera Cruz according to Sumichrast ^, but 

 found near Cordova by Salle i. The former naturalist also met with it in several places 

 on the Isthmus of Tehuantepec ^, thence it spreads over the forest lands of Guatemala 

 bordering the Pacific Ocean, ascending the mountains to an elevation of 3000 or 4000 

 feet. On the Atlantic side of the cordillera it occurs in the forest-region of northern 

 Vera Paz and in the valley of the Polochic river, and is also not at all uncommon in 

 the neighbourhood of Coban in January at an elevation of about 4500 feet above the 

 sea-level. 



The southern extension of this species is rather remarkable, as it does not terminate, 

 like that of so many species where a second is found in the southern section of our 

 fauna, in Honduras and Nicaragua, but it reaches Chiriqui, the allied form occurring 

 on the line of the Panama Eailway. 



Its habits much resemble those of the various species of Todirostrum. The iris in 

 life is greyish white. 



2. Oncostoma olivaceum. 



Todirostrum olivaceum, Lawr. Ibis, 1862, p. 13 '. 



Oncostoma olivaceum, Scl. Ibis, 1863, p. 13 (note) ° ; Cat. Birds Brit. Mus. xiv. p. 77 ' ; Lawr. Ami. 

 Lye. N. Y. vii. p. 473 ^ Scl. & Salv. P. Z. S. 1864, p. 358'. 



Prsecedenti similis, sed capite summo olivaceo dorso conoolore ; gula quoque et abdomine concoloribus paUide 

 flavo-olivaceis, teotricibus alarum magis distincte flavido Umbatis, distinguendum. (Descr. maris ex Lion 

 Hill, Panama. Mns. nostr.) 



Eah. PAifAMA, Lion Hill (M'Leannan 12345), 



Oncostoma olivaceum is a close ally of 0. cinereigulare, but at the same time easily 

 recognized. So far as we know the only specimens that have been obtained were 

 secured by M'Leannan during the time he was station-master at Lion Hill on the 

 Panama Eailway. 



LOPHOTEICCUS. 



Lophotriccus, H. v. Berlepsch, P. Z. S. 1883, p. 553 (type Todirostrum spicifer, Lafr.); Scl. Cat. 

 Birds Brit. Mus. xiv. p. 86. 



The two species which now constitute this genus werp included in Euscarthmus until 

 Count Berlepsch separated them in 1883, but without giving any characters. L. spicifer 

 is a species of the upper Amazons valley up to the base of the Andes. L. squamicris- 

 tatus has a wider and more northern and western range over Venezuela, Colombia, and 

 Ecuador, entering our region as far as Costa Kica. 



Compared with Todirostrum this genus has a much less elongated flattened bill, the 

 sides of which converge from the gape to the tip, the membrane over the nostrUs is 

 more developed, the tarsi are covered with a single shield, the tail is less rounded, and 

 the feathers of the head are wide and produced into a conspicuous crest. 



