Mr. P. L. Sclater on tivo new Tanagers. 377 



vallatce) on the dorsum, about 2 inches hi advance of the frenum ; 

 the muscles of the tongue and their action \Aere minutely described ; 

 also those of the larynx and pharynx. 



The brain, which weighed only 3 oz., presented a narrow, elon- 

 gated, depressed form, the back part of the cerebral hemispheres 

 resting against, but not overlapping, the cerebellum. The hemi- 

 spheres showed a few symmetrical convolutions ; they were united 

 by a large corpus callosum : the olfactory lobes are very large and 

 hollow. Many plexuses and other peculiarities of the vascular system 

 were noticed. 



This memoir will appear, illustrated with numerous figures, in the 

 Transactions of the Society. 



Descriptions of Two New Tanagers in the British 

 Museum. By Philip Lutley Sclater, M.A. 



1. Chlorospingus melanotis, Sclater. C. supra nigro-i^lum- 

 beus, dorso imo brimnescentiore : ulis caudaque hrunnescentihus, 

 illis penitus nigriccmtibus : loris et capitis lateribus cum regione 

 auriculari nigris : subtus pallide ochraceo-rufus, mento smmno 

 nigricante ; ventre medio dilutiore : rostro nigro : pedibus 

 pallidis. 



Long, tota 5"25 poll., alee 2'5, caudee 2"25. 



Hub. in Nova Grenada. Mus. Brit. 



Obs. Species rostro et forma Chlorospingo atropileo similis, sed ab 

 hoc et aliis hujus generis colore corporis inferi ochraceo-rvfo facUe 

 distinguenda. 



This Httle species, of which there are two examples in the National 

 Collection, both apparently Bogota skins, differs from all its conge- 

 ners in the colouring of the lower surface of the body, which is of a 

 pale reddish buflF, growing much whiter in the middle of the belly. 

 Above the plumage is lead-coloured, with a greenish tinge super- 

 induced towards the lower part of the back. The wings and tail are 

 brown, with slight greenish edgings ; the ear-coverts and whole side 

 of the face are black. In the second specimen, apparently not so 

 mature, there is a light-coloured spot on the front, just above the 

 nostrils. The bill of this species agrees with that of Chlorospingus 

 atropileus, (Lafr.), in size, but is rather straighter in form, as in 

 C.verticalis, (Lafr.). 



2. Tachyphonus xanthopygius, Sclater. T. nigro-cinereus, 

 subtus dilutior: axillis et tectricibus subalaribus albis: dorso 

 postico citreo-flavo : rostro et pedibus nigris. 



Long, tota 5*8, alse 3"1, caudse 2*.5. 



Hab. in Nov. Grenada. Mus. Brit. 



This bird seems intermediate between Tachyplwnus and Pijranga, 

 and might be placed in either of these groups. The white axillary 

 feathers point to the former genus, the yellow rump to the latter. 

 The bill, however, is more compressed than is usual hi Pyranga, and 

 agrees nearly with that oi Tachyphonus coronatus,(\'vi^i\.). The upper 



