Mr. D. G. Elliot on an appttrently new Eurystonius. 203 



under wing-coverts and axillary plumes brilliant cobalt ; bill 

 black. 



Hab. W. Africa. Senegambia : Bissao (Beaudouin), Casa- 

 manze (Verreaux), River Gambia {Mus. K. B. S.). 



In the Lisbon Museum is a specimen of this Roller, said to be 

 from the Cape-Verde Islands; but the best authorities who have 

 written on the ornithology of these islands do not mention the 

 occurrence of a species of Coracias there, and without further 

 proof it would be wrong to accept the fact of the present species 

 being met with in this locality on the faith of the single speci- 

 men above mentioned. So far as we know, the Blue-bellied 

 Roller is a non-migratory species, limited in its range to the 

 Senegambian district, where, judging from the number of speci- 

 mens which reach this country, it cannot be very uncommon. 



My description is that of a remarkably fine specimen in my 

 collection from the river Gambia. 



[To be continued.] 



XV. — Description of an apparenthj new Bird of the Genus 

 Eurystonius, with a List of the known Species. By D. G. 

 Elliot, F.L.S., F.Z.S., &c. 



EURYSTOMUS WAIGIOUENSIS. 



E. §imilis E. crassirostri, sed omnino saturatior ; pileo nigricante, 

 dorso viridescente : oospore subtus cyanescente ; gutture vio- 

 laceo longitudinaliter striato : alis extus saturate ultramari- 

 nis, basi argenteo-cyaneis : cauda late ultramarino nitente. 



Head on top and nape blackish brown ; back greenish blue ; 

 wings ultramarine blue ; secondai-ies prussian-blue ; the second, 

 third, fourth, and fifth primaries crossed near the centre with a 

 bluish white bar : throat violet, the centre of the feathers light- 

 blue ; underparts light greenish blue : tail black with a blue 

 and purple gloss : bill bright red, black at tip : feet red. 



This species appears to be intermediate between Eurystomus 

 azureus of Gray, from the island of Batch ian, and E. crassirostris 

 of Sclater, from the Solomon Islands. It differs from the first 

 named in its much smaller bill, and in the absence on the body 



