INHABITING MADAGASCAR ETC. 49 



which I am treating that have been already pubUshed— on H. madagascariensis, 

 H. oUvaceus, and H, crassirostris by my brother, and on the first, second, and 

 H. borhonicus by MM. Pollen and Van Dam. It will suffice to append the 

 synonymy and a diagnosis of each, with a very few other remarks. 



1. Hypsipetes madagascariensis. (PI. XLII. fig. 1.) 



? Hourrouue \_=.Hourrouve\, De Flacourt^ Hist. Madag. p. 166 (1661). 



Le Merle cendre de Madagascar, Brisson^ Orn. ii. p. 291^ pi. xxv. fig. 2 (1760) . (Fig. et descr. 



orig. e mus. Realm, a Poivre allat.) 

 UOurovang ou Merle cendre de Madagascar, De Montbeillard^ Hist. Nat. Ois. iii. p. 380 



(1775) ; Daubenton, PI. enl. no. 557. fi^. 2. 

 Turdus madagascariensis, P. L. S. Miiller, Natursyst. Suppl. p. 139 (1776) . (Ex ^^ BuiFon-" — 



errore pro De Montbeillard.) 

 Cinereous Thrush, Latham^ Synops. ii. p. 64 (1783). 

 Turdus urovang, J. F. Gmelin, Syst. Nat. i. p. 836 (1788). 

 Turdus ourovang, Latham, Ind. Orn. i. p. 351 (1790). 



Orova, Sganzin, Mem. Soc. Mus. Strasb. iii. livr. i. signat. MM. p. 26 (1840). 

 Hypsipetes ourovang, ^^ J. Verreaux/^ Catal. Mus. Eivoli, i. p. 6 (1846) . 

 Hypsipetes urovang. Pollen & Van Dam, Becb. Faun. Madag. &c. ii. p. 96 (1867) . 



Diagn. — ^^ Superne einereus, nonnihil ad olivaceum inclinans, inferne dilute cinereus ; vertice nigri- 

 cante, ad viridem vergente, remigibus exterius cinereo-fuscis, interius fascis -, rectricibus 

 cinereo-fuscis.^' 



The above is from Brisson, and is not only correct but seems to be 

 sufficient even for these critical days if we add : — 



Iridibus clare rubris. Long, tota 8*25^ alse 4*4^ caudse 4'1^ acrotarsi '77, dig. med. sine 

 ungue '6, hallucis sine ungue '4, maxillae a fronte '9^ ejusdem a rictu 1'09, mandibulse ab 

 articulo 1*65^ rostri altitudo ad frontem '25 poll. Angl. 



This species diff^ers from the rest far more than they do among them- 

 selves, and can easily be picked out of a large series by its small size and 

 more cinereous coloration, which is especially observable on the lower 

 parts. 



