126 Zoological Socicfi/. 



only 6 inches, wing 4| inches, medial rectrices 1| inch, external 

 3^ inches. Plumage uniform mouse-colour, chin whitish. 



Acanthjlis bicolor (Gray) ; Chcetura bicolor, Gray, Zool. Misc. p. 7. 



A specimen of this elegant little species was obtained in May 1842 

 at Fernando Po, where it was very common. 



TURDIDJS, MaLURIN^E. 



Prinia olivacea, Strickl. P. suprd, viridi-olivacea, remig'ibvs 



fiiscis, oUvaceo limbatis, caudd cimeatd, rectricibus duobus inter- 



mediis fuscis, lateralibus albis, extus fusco marginatis, extimo toto 



albo ; mento corporeqiie toto iiifemo albido, pallidi flavo lavato. 



Rostrum pedesque fuscescentes. 



The aspect of this bird is that of a Phylloscopus , but the beak is 



longer, more depressed at the base, the culraen carinated, the wings 



short and rounded, the first quill subspurious, the fourth longest ; 



tail much graduated, rectrices narrow ; tarsi moderately long, acro- 



tarsia scutate, toes slender, the outer longer than the inner. These 



characters induce me to class the bird provisionally in the genus 



Prinia. 



Total length 4| inches ; beak to gape 6 lines, to front 5^ lines, 

 breadth 2 lines, height 1 L line ; wing 1| inch ; medial rectrices 1 inch 

 10 lines, external 1 inch 1 line ; tarsus 7^ lines, middle toe 5|- lines, 

 hind ditto 5 lines. 



Hab. Fernando Po ; June 1842. 



Prinia icterica, Strickl. P.supruflavo-oHvacea,loris,snperciliis, 

 genis, margine aluriim, tibiis, caudceque tectricibus infernis ItBte 

 flavis, mento, guld, pectore et abdomine albidis, pallide isabellino 

 lavutis, hypocho7idriis fiavo-olivaceis, rostro nigro, jiedibus rubris. 



This bird appears to belong to the same group as the last, but the 

 beak is rather more depressed, the tail shorter and less cuneate, and 

 the tarsi rather longer. In all other respects their structures corre- 

 spond. They both have short rictal bristles and the nostrils are 

 large, oblong, and situated in a large membranous depression of the 

 beak. Possibly they may hereafter form a distinct genus of Malu- 

 rincB, distinguished chiefly by the depressed form of the beak. 



Total length 3| inches ; beak to gape 7^ lines, to front 6 lines, 

 breadth 2^ lines, height l-^ line ; wing 1 inch 11 lines ; medial rec- 

 trices 11 inch, external 1 inch ; tarsus 9^ lines, middle toe 6-| lines, 

 hind ditto 5| lines. 



Hab. Fernando Po ; June. 



Mr. Fraser adds : " I rides light hazel ; note tweet, ttoeet, tweet, hop- 

 ping about the topmost branches of a small tree like a wren." In a 

 sketch of this bird by Mr. Fraser the tail is erect, as in Troglodytes. 



TuRDINiE. 



Cossypha poensis, Strickl. C. corpore supra fuliginoso -fusco, 

 remigibus fuscis, omnibus (la et 2a except is) basin versiis rufo- 

 ferrugineis, sed scapis fuscis ; rectricibus fuscis, tribus externis 

 utrinqiie afbo terminatis (^qui color in rectricis extimte pogonio 



