295 



A typical Formicarius, a close ally of F. cayanensis, analis, &c., 

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

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

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



97. Thamnophilus doliatus (Linn.). 

 Salle, no. C5, <? et ? . 



Tyrannid^. 



98. todirostrum cinereigulare, sp. dot. 



Olivaceum : alis caudaque nigris, flavicante olivaceo Umbatis : orbi- 

 tis antice nigricantibus : loris albidis : subtus gutture et cervice 

 cinereis aut potius albis cinereo dense striolatis : pectore olivaceo : 

 abdomine toto et tectricibus subnlaribus flavis : rastro compres- 

 siusculo, crassiusculo ; culmine carinato, incurvo ; colore nigri- 

 cante, tomiis pallidis : pedibus pallide brunneis. 

 Long. totą 3'G, alse 1'7, caudee 1'2. 

 Salle, no. 89, <? . Cordova. 



This Todirostrum differs slightly in the form of the bill from 

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

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

 species of the group. 



99. MuscivoRA MEXiCANA, sp. nov, 



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



Brunnea: uropygio, cuudn totą et corpore subtus flavescenti-ochra- 

 ceis, gutture albidiore : alis extus ochraceo punctatis et subtus 

 (nisi primariorum apicibus) omnino ochraceis : crista ampla, 

 aureo-flava, ccerulescente aneo terminata : rostra productiore 

 quam in M. regia; pedibus flavidis . 

 Long. totą 6-0, alse 3-3, caudse 28, rostri a rietu 1-3. 

 SalM, no. 78. Cordova. 

 _ M. Salle's coUection 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 Mec/alophus 

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 naparte's MS., but which I believe is merely an unpublished name.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

 purplish colouring. 



The Muscivora castelnauii {Onychorhynchus castelnaui, Deville, 

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

 known, from Eastern Peru, on the other hand appears to have a 

 shorter bill and more reddish crest than the typical species. 



100. Platyrhynchtjs cancroma (Licht.), Bp. Consp. p. 183. 

 Salle, no. 90. Cordova, J et ? similes. 



I can find no difference between these and S. American specimens. 



