Mr. P. L. Sclater on new species of TyrannidEe. 423 



abdotnine et crisso citrine indutis, peetore et lateribus nigro 

 flammulatis : subalai'ibus citrino-fiavis : rostra cornea, mandi- 

 bulce inferiaris basi alba ; pedibus nigris. 



Long, tota 8*5, alee 4*5, caudse 3" 7, rostri a rictu \'2, tarsi 0"74. 



Hah. In litt. reipublicse Nov. Granadse in vicinitate urbis S. 

 Marthae. 



This fine Myiadynastes is a close ally of M. audax and M. lutei- 

 ventris, but is readily distinguishable by its stronger bill, longer tail, 

 which is slightly forked, and the lighter surface of the body below ; 

 this is nearly pure white on the throat and middle of the belly, 

 being rather sparingly flammulated on the breast and sides, which 

 latter parts, along with the crissum, are tinged with yellow. 



The example of this bird in my own collection was obtained from 

 MM. Verreaux of Paris, and was received from their collector at 

 Santa Martha. 



The true ty|3e of the genus Myiadynastes, Bp. (a generic term 

 pubhshed by the Prince, like many others, without characters, or 

 even the indication of any exact type), was intended, I believe, to 

 have been the Tyrannus audax, Auct. The name first appeared in 

 print in the ' Comptes Rendus ' for April 3, 1854, in connexion 

 with M. luteiventris ; but it also occurs in the catalogue of birds 

 collected in Cayenne by M. Desplauches* (p. 11), where it is ap- 

 plied to T. audax. The division seems a natural one, connecting 

 Pitangus and Tyrannus. 



CONTOPUS MESOLEUCUS. 



Obscure cineraceus, olivaceo vix tinctus, pileo, alis et cauda nigri- 

 cantibus, secundariis dorso proximis albo extus marginatis : 

 subtus obscure cineraceus, vitta longitudinali a mento corpus 

 descendente cum ventre toto albo, flavic ante tincto, kypochon- 

 driis et crisso cineraceo adumhratis : fascicula plumarum utrin- 

 que ad latera uropygii, alis obtecto, albo : rostra nigra, mandi- 

 bulce inferioris basi flavida : pedibus nigris. 

 Long, tota 6"75, alae 4*0, caudae 2"7. 



Hab. In Mexico meridional!, et in rep. Guatemala (Skinner). 

 This bird is easily recognizable by the creamy-white medial line, 

 which passes from the chin to the crissum, expanding greatly on the 

 belly. My examples are from Orizaba, collected by Botteri. ^Ir. 

 Gould possesses a specimen from Guatemala of the same species. 

 The form is quite typical, — the wings being very long, and the second 

 primary, which is the longest, considerably (by O'lo inch) exceed- 

 ing the first and third, which are equal. The curious white tufts 

 at the side of the uropygium, covered by the wings, are very notice- 

 able in this species — more so than in my examples of C borealis. 



* This little tract is extracted, I believe, from the Memoires of a learned Society, 

 published at Caen. The only copy I have ever seen was given to me by the 

 author himself in 1857, shortly before his death. In it is established a new genus 

 of Tyrannidce — Planchesia — for Muscicapa fuliginosa, Gm. (PI. Enl. 574. fig. 1) ; 

 and the generic term Syrichtha, the type of which appears to have been unknowH 

 to Mr. Gray, is used for Tyranntis curtipes, Sw. 



