423 Zoological Society : — 



A typical Fonnicarius, a close ally of F. cnyaneyisis, analis, &c., 

 but distinguished by its black throat, bordered beneath by a narrow 

 band of rufous ; white triangular sjiot on the lores ; and other dif- 

 ferences. It is the first of the form found to occur so far north. 



11. TODIROSTRXJM CINEREIGULARE. 



Olivaceum : alls caiulaque nigy-is, flavicante olivuceo limbatis : orbi- 

 tis antice nigricantibus : loi'is albidis : suhtus gutture et cervice 

 citiereis aiit jJOtius ulbls cinereo dense striolatis : pectore olivaceo : 

 abdomine toto ct tectricibus subalaribus fiavis : rostro compres- 

 siusculo, crassiusculo ; cidmine carinato, incurvo ; coloi'e nigri- 

 cante, tomiis pallidis : pedibus pallide brunneis. 

 Long, tota 3"G, alae I" 7, caudee 1"2. 

 Salle, no. 89, c? . Cordova. 



This Todirostrum differs slightly in the form of the bill from 

 the ordinary members of the genus, that part being rather thicker, 

 and with the culmen elevated and more incurved than in the typical 

 species of the group. 



12. MUSCIVORA MEXICANA. 



" Megalophus mexicanus, Kp.," Bp. MS. 



Brunnea : vropygio, cnudn tota et corpore suhtus fiavescenti-ochra- 

 ceis, gutture albidiore : ali^ extus ochraceo punctatis et subtus 

 {nisi primariorvin apicibus) cmnino oclii'aceis : crista ampla, 

 aurco-flava, carulescente aneo terminata : rostro productiore 

 quam in M. regia .- pedibus fiavidis . 



Long, tota G'O, alee 3"3, caudse 2'8, rostri a rictu 1"3. 



Salle, no. 7'S. Cordova. 



M. Salle's collection contains a single example of this interesting 

 bird, which however was not procured by himself, and is unfortu- 

 nately not in very good condition. It is probably the Megalophus 

 mexicanus of Dr. Kaup, which I have seen indicated in Prince Bo- 

 naparte's MS., but which I believe is merely an unpublished name. 

 From the common Muscivora regia, to which it offers a close general 

 resemblance, it may be distinguished by its longer bill, and having 

 the base of the crest of a paler yellower tint, and the tips with less- 

 pur] )lish colouring. 



The Muscivora casfelnauii (Oni/chor/ii/nchus casfebiauii, Deville, 

 R. Z. 1849, p. 56), the only other member of the genus hitherto 

 known, from Eastern Peru, on the other hand a})pears to have a 

 shorter bill and more reddish crest than the typical species. 



13. Tyrannula sulphureipygia. 



Olivacea : pilei crista mediali fiava : uropjygio pallide sulphurco : 

 alis caudaque nigris, secundariis extus brunnescente limbatis : 

 subtus Jlavicanti-brunnea, gula et ventre medio fiavis . 



Long, tota .5'2, alee 2*8, caudse 2'3. 



Salle, no. 84. Cordova. 



Ohs. Aff. T. harbatce ex America Meridionali, sed statura majore, 

 colore uropygii pallidiore et corporis subtus brunnescentiore distin- 

 guenda. 



