Messrs. Sclater and Salvin on the 
1 99 
149. Myiarchus cooperi, Kaup; Baird's Bep.p. 180. 
Transmitted by Mr. Skinner. In collection of P. L. S. 
150. Contopus borealis (Sw.) ; Baird’s Bep. 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. 
152. Contopus sordidulus, Sclater, P.Z. S. 1859 (Jan. 25th). 
Transmitted by Mr. Skinner. 
153. Contopus virens (Linn.), Baird's Bep. p. 190. 
Also transmitted by Mr. Skinner. 
154. Empidonax flaviventris, Baird's Bep. p. 198. 
In Mr. Gould's collection from Guatemala. 
155. Empidonax minimus, Baird, Bep. p. 195. 
Occurs at Belize and Duenas. 
156. Empidonax albigularis, sp.nov. 
Supra sordide olivaceo-brunneus, uropygio rufescente tincto : 
gutture 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 ochracescenti-brunneis : rostro superiore fuseo, in- 
feriore flavo: pedibus nigris : long, tota 4*75, alse 2*3, 
caudse 2*1, tarsi 0-6, rostri a rictu 0*6. 
AflP. 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 ph^ocercus, Sclater, P.Z, S. 1859(Jan. 
25th). 
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: alis fusco-nigris, tectricibus majoribus, secundariis 
et primariis secunda, tertia, quarta et quinta ad basin flavo 
