322 Dr. G, Hartlaub on a new Bird from W. Africa. 



the red bill and feet also, though in rather a less degree, remind 

 one strongly of Eurystomus. 



Genus Pseudochelidon. 



Rostrum eurystominum, sed apicem versus conspicue attenuato- 

 subcompressum, culinine minus rotundato, inter nares 

 apertas subcarinato ; naribus in fossa subtriangulari positis, 

 subrotundatis, conspicuis. 



Pedes niajusculi ; tarsi breves, digito interno et externo sequa- 

 libus ; unguibus debilibus valde compressis, postico robus- 

 tiore, majore. 



Alee cypselinse, longse, angustse, subfalcatse, caudse apicem longe 

 superantes. 



Cauda brevis, sequalis, rectricibus apice subquadrato-dilatatis, 

 in apicem tenuem desinentibus, sive submucronatis ; scapis 

 mollibus ; supra- et infra-caudalibus longis, cypselinis. 



Ptilosis sericea, metallice nitida. 



Pseudochelidon eurystomina, nob. 



Tota nigra, nitore nonnullo metallico ; dorso conspicue seneo-vi- 

 rescente, cauda et alis vix virescentibus ; subalaribus fuli- 

 ginosis J pedibus flavo-rubentibus ; rostro corallino-rubro, 

 apice pallidiore, fiavo ; unguibus pallidis. 

 Long, tota 5" 3'"; alai4"4"'; cauda 1" 7'"; rostri a fronte 5'", 

 a rictu 7'"; latit. rostri ad bas. 5'"; altit. rostri ad bas. 2^'"; 

 long, tarsi 5i"'; dig. med. c. ung. 8'"; long. dig. ext. et int. 

 c. ung. 6'", poll, et lin. Gall. 



The deep, half velvet-like, half dull metallic-like, glimmering 

 green of the back seems rather sharply defined against the pure 

 black of the head, and reminds one of the somewhat peculiar 

 colouring of Hirundo thalassina. The under side is more of a 

 dull black. The formation of the tail is abnormal, and worthy 

 of remark. The soft shafts of the rectrices project, though not 

 naked, beyond the barbed portions ; these latter being rather 

 pointed towards them. This formation is carried to the furthest 

 extent in the two middle feathers, but is apparent in all of them. 

 The upper and under tail-coverts project in a wedge-like shape 

 to nearly the end of the tail — a formation almost constant 

 among the Hirundinidce, but which, on the other hand, is not 

 found in Eurystomus, where the tail-coverts only just cover the 

 base of the tail. The formation of the feet differs from that of 

 Eurystomus, inasmuch as it is generally weaker, and the inner 



