102 Letters, Announcements, ^c. 



wing-coverts, quills, and tail-feathers dusky brown, edged with 

 paler whitish brown ; a superciliary line and a small stripe 

 under the eye white ; throat white, marked irregularly down 

 the side and in the middle with dusky brown spots ; ear-coverts, 

 upper part of the breast, and flanks pale greyish brown ; abdo- 

 men and under tail-coverts pure white ; bill pale horn-brown, 

 lower mandible much paler and inclining to yellowish white ; 

 feet dusky brown. Total length 5*3 inches, wing 3*35, tail 

 2-1, tarsus 0-7. 



Hab. Damara Land (C. /. Andersson). 



This bird seems to be the South-African representative of 

 Poliospiza xanthopygia (Riipp.), a careful description of which is 

 given by Dr. von Heuglin (Orn. Nordost-Afr. p. 641), but is con- 

 siderably larger in all its dimensions. At first sight it might 

 be taken for Crithagra albogularis, Smith (S. Afr. Q. Journ. ii. 

 p. 48), but differs in the bright sulphur-coloured rump being 

 common to both sexes, whereas in C. alhogularis the female has 

 the rump uniform with the back. Poliospiza crocopygia is also 

 much lighter in coloration than C. albogularis. 



VIII. — Letters, Extracts from Correspondence, Announcements, ^c. 



Instead of the articles entitled "Recent Ornithological Publica- 

 tions " which have hitherto appeared in ' The Ibis,^ the Editor 

 proposes to give in the October number of each year notices of 

 all books and papers relating to Ornithology published during 

 the preceding year. These will be arranged in alphabetical 

 order, and will contain such remarks as each publication seems 

 to call for. It is believed that this plan will render this portion 

 of ' The Ibis ' less ephemeral in its nature, and that it will be 

 useful as a permanent index for reference. 



In order to make this article as perfect as possible. Contributors 

 to ' The Ibis ' and all other ornithologists are requested to for- 

 ward to the Editor, before the 1st of July next, a complete list 

 of their publications during the year 1870. 



We have received the following letters addressed to "The Editor 

 of ' The Ibis ' " :— 



