122 
Messrs. Sclater and Salvin on the 
149. Myiarchus cooperi, Kaup; Baird's Rep.p. 180. 
Transmitted by Mr. Skinner. In collection of P. L. S. 
150. Contopus borealis (S\v.); Baird’s Rep. p. 188. 
Transmitted by Mr. Skinner. In Mr. Gould's collection. 
151. Contopus mesoleucus, Sclater, P. Z. S. 1859 (Jan. 
25th). 
Mr. Gould's collection contains Guatemalan examples of this 
species. 
Zf. 152. Contopus sordidulus, Sclater, P.Z. S. 1859 (Jan. 25th). 
Transmitted by Mr. Skinner. 
153. Contopus yirens (Linn.), Baird's Rep. p. 190. 
Also transmitted by Mr. Skinner. 
154. Empidonax flaviventris, Baird's Rep. p. 198. 
In Mr. Gould's collection from Guatemala. 
155. Empidonax minimus, Baird, Rep. p. 195. 
Occurs at Belize and Duenas. 
156. Empidonax albigularis, sp. nov. 
Supra sordide olivaceo-brumieus, uropygio rufescente tincto: 
gutturc albo : pectore et cervicis lateribus grisescenti-brun- 
neis: ventre et crisso pallide flavis: alis et cauda fusco- 
nigricantibus, illis pallido brunneo bifasciatis, secundariis 
extus albido anguste limbatis: tectricibus alarum inferi- 
oribus ochracesccnti-brunncis: rostro superiore fusco, in- 
feriore flavo: pedibus nigris : long, totft 4*75, alse 2*3, 
caudse 2*1, tarsi 0*6, rostri h rictu 0*6. 
Aff. Empidonacti minimo , sed statura paulo majore, alarum 
fasciis brunneis et gula pure alba, dorso quoque obscuriore 
distinguenda. 
A single example of this apparently undescribed species was 
shot by Salvin at Duenas. 
157. Mitrephorus peleocercus, Sclater, P.Z. S. 1859(Jan. 
25 th). 
In Mr. Gould’s collection, received from Mr. Skinner. 
158. Elainia vilissima, sp. nov. (Plate IV. fig. 1.) 
Olivacea, pileo nigricanti-cinereo, fronte et superciliis sordide 
albis: alls tusco-nigris, tectricibus majoribus, secundariis 
et primariis secunda, tertia, quartd et quinta ad basin fiavo 
