954 DR. G. HARTLAUB ON BIRDS [NoV. 29, 



Dr. Riebeck being still in India, the scientific compilation of the 

 ornithological portion of his collection has been confided to me by 

 Prof. H. Welcker, of the Anatomical Institution at Halle. It con- 

 tains the following species : — 



I. SOCOTRA. 

 a. Passeres. 



1. CiSTicoLA iNCANA, Sclat. & Hartl. Proc. Zool. Soc. 1881, 

 p. 166, pi. XV. fig. 1. 



One adult male, agreeing in every respect with the specimen col- 

 lected by Prof. Balfour. 

 " Iris black." Gebel Firi. 



2. Lanius tjncinatus, Scl. & Hartl. Proc. Zool. Soc, 1881, 

 p. 168, c. fig. cap. 



One adult specimen. 



" Iris dark brown." Karegnigi. 



3. ZosTEROPS habessinica, Guer. 



Zosterops habyssinka, Ileugl. Orn. N.O.-Afr. i. p. 41.3; Hartl. 

 Monogr. in Cab. J. f. O. 1865, p. 9; Sol. et Hartl. P. Z. S. 1881, 

 p. 168. 



One adult specimen. 



" Iris greyish brown." Tamarida. 



4. Nectarinia baleouri, Scl. & Hartl. Proc. Zool. Soc. 1881, 

 p. 169, pi. XV. fig. 2. 



Two adult males and one female are in the collection. 

 " Iris brownish red." Karegnigi and Wadi Sjahi. 



5. Rhynchostrxjthus riebecki, n. sp. (Plate LXXII.) 



Supra fusco-cinerascens, pileo fuscescenti-nigro, frontem versus 

 nigriore, gida fusco-nigricante ; macula majore regionem paro- 

 ticam occupante circumscripte sericeo-alba, nonnihil fulvescenti 

 adumhrata; remigibus pritnariis fuscis ; tectricibus majoribus 

 remigumque tert. marginibus externis Icete et dilute Jfavis, vit- 

 tam lotigitudimdem valde consjne^iam formantibus ; scapula- 

 ribus et tectricibus alarum minoribus dorso concoloribus ; siib- 

 alaribus albido Jlavidoque variis ; rectrice extima tola obsolete 

 fusca, duabus iniermediis fuscis, vix disfmcte flavido fimbriatis, 

 reliquis fusco-nigricantibns, marginibus externis Icete flavis; 

 subcaudalibus albidis ; pectore et abdomine griseo-fulvescenti- 

 hus; rostro nigro. Long. tot. circa 152 millim., culm. 14, 

 al. 85, caud. 27, tars. 19. 

 Foem. Non diversa, exceptis pectore et abdomine purius griseis. 

 Of this second species of the Socotran genus Bhynchostruthus 

 there is a fine adult pair in the collection. The species is quite 

 typical in its structure, but very different in colour, and easily recog- 

 nizable by the dark hue of the crown, the silky white spot on the 



