1845.] or little known Species of Birds. 595 



two inches and a quarter to two and three-eighths ; tail two and a 

 quarter : bill to gape three-quarters ; and tarse seven-eighths of an 

 inch. As compared with the British C. salicaria, (Sylvia arundinacea, 

 apud Temminck,) the tinge of the upper-parts, breast and flanks, is 

 much less brown, and the beak is less compressed, although vertically 

 deeper. The next species has a nearer affinity for the British bird, 

 both in form and colouring ; but is smaller, with a distinctly smaller bill, 

 and the supercilium is carried backward beyond the eye, which is not 

 the case in C. salicaria. 



3. C. agricola, Jerdon. Less than the preceding, with a propor- 

 tionally smaller bill, and more rufous colouring. Length four inches 

 and a half, by six and seven-eighths ; wing two and a quarter ; tail 

 the same ; bill to gape five-eighths ; and tarse seven-eighths. A 

 specimen procured at Cabool by the late Sir Alexander Burnes 

 agrees perfectly with others obtained near Calcutta and in Southern 

 India. 



Arundinax, nobis. This genus was first detected by Mr. Jerdon, 

 among a number of specimens of Calamoherpe arundinacea (?), which 

 the only species as yet ascertained a good deal resembles, on a superficial 

 view. Several specimens were soon after procured by myself in the 

 vicinity of Calcutta ; and Captain Abbott also sent it from Ramree, 

 Arracan. Its true affinity, however, is with Sphenura and its allies, 

 and not with the preceding group. The bill is somewhat more pro- 

 duced and tapering, slenderer and less laterally compressed, than in 

 Sphenura, with barely discernible emargination of the upper mandible, 

 and the rictal bristles are smaller and more slightly curved ; rest as in 

 Sphenura, but the tail-feathers narrow and much graduated. 



Ar. olivaceus, nobis. General aspect of Calamoherpe arundinacea (? ), 

 but at once distinguished by its shorter and thicker bill, and much 

 more graduated tail-feathers. Length eight inches, of which the mid- 

 dle tail-feathers measure three and three-quarters, the outermost an 

 inch less ; wing three and one-eighth ; and tarse an inch. Colour uni- 

 form olive-brown above, a little rufescent towards the tail ; throat 

 whitish, and the rest of the under-parts tinged with fulvous- brown ; 

 lores also pale : bill dark brown, the lower mandible pale carneous ; 

 and legs plumbeous. My impression is, that the sexes are equal in 

 size, as are all the specimens before me, — unlike the sexes of Sphenura 

 and Megalurus ; but I have omitted to note down the fact. 



