Mr. P. L. Sclater on new species of Birds. 307 



family Turdidce, and for the present I am rather inchned to place it 

 along with the Mock-birds (Mimina), with the general structure of 

 some of which it seems most nearly to accord, except in the absolute 

 want of any signs of rictal bristles, whence I have called it glabri- 

 rostris. 



Mr. Leyland informs me, with regard to this bird at Omoa, that 

 he believes it is rare there, as he only saw one other individual during 

 his stay. It frequents the low thick bushes. 



Further information concerning the difference of the sexes, habits 

 and internal structure of this interesting bird are requisite, before its 

 true position can be satisfactorily estabhshed. 



10. LiPAUGUS RUFESCENS. 



Rufescenti-brunneus, subtus clarior, capite et pectore subtilissime 

 nigrOy vittas obsoletas formante, transfasciatis : pennarum 

 maculis apicalibus rotundis in pectore et ventre medio et in 

 erisso sparsisy nigris : remigibus nigricantibus intus et extus 

 rufo marginatis : alarum tectricibus superioribus rufis nigro 

 variegatis, inferioribus rufis, fascia axillari crocea : cauda uni- 

 colorCy rufescenti-brunnea : gula et erisso pure rufis : rostro 

 nigricante, pedibusfuscis. 

 Long, tota 5*7, alse 4*4, caudse 3*3. 



Hab. In rep. Guatimalensi prope urbem Coban (Delattre). 

 Mus. Britannico et Derbiano. 



I examined an example of this bird with much care during an in- 

 spection of some of the riches of the Derby Museum at Liverpool, 

 two years ago, and attached to it the MS. name which I now pub- 

 lish. Through the kindness of Mr. Thomas Moore I have lately 

 had the opportunity of studying it a second time. Mr. G. R. Gray 

 has obligingly pointed out to me a stuffed specimen in the British 

 Museum, which is evidently the adult of this species, that in the 

 Derby Museum being in an immature state ; and I have therefore 

 modified my original description, so as to render it applicable to the 

 more perfect bird. In the younger stage the marking on the wings 

 is not so decided, and the characteristic black spots on the breast, 

 belly and crissum, and the axillary tufts, are absent. The specimen 

 in the British Museum was procured from MM. Verreaux, and is 

 labeled with the MS. nam.e *' Lathriosoma tgpicum, Bp." It is not 

 however necessary to create a new generic name for this bird, as it 

 certainly cannot be separated from Lipaugus hypopyrrhus (Vieill.), 

 for which the term Aulea * (taken from Dr. Schiff's MS.) has been 

 already published by Prince Bonaparte. It forms, in fact, an excellent 

 second species of this division, which seems to serve as a connecting 

 link between the genera Lipaugus and Heteropelmay and js perhaps 

 worthy of generic rank. 



11. TiNAMUS CASTANEUS. 



Saturate castaneus, capite et cervice undique cum gula nigri- 



* Prince Bonaparte writes this word * Aulea,' but if, as I suppose is the case, 

 it comes from avXbs, tibia, the proper adjectival form would be aulius. 



20* 



