182 BIRDS OF BRITISH OriANA. 



abdomen and under tail-coverts yellow; under M'ing-eoverts and 

 inner edges of quills below )»ale sulphur-yellow, remainder ot" 

 quill-lining dark brown ; loAver aspect of tail brown edged with 

 yellow at the tip. 



Total length 92 mm., exposed culmen 7, wing 50, tail 40, 

 tarsus 13. 



The bird described was collected at Biirtica in 1912. 



JJreedinrt-seaiton. Unknown in British Guiana. 



JSest. Unrecorded in British Guiana. 



J'^ogs. Undescribed Iroin British Guiana. 



Ranue hi JJritish Guiana. Bartica (McConvell colhct'ioi}) ; 

 Bartica ( WJiiteb/). 



K.cti-alimital liavae. Cayenne (Lathaut) ; North-east Brazil, 

 Eastern Peru, Golombia. 



IlaJ'its. Unrecorded in British Guiana. 



Genus TYRANNISCUS Galj. & TIein. 



Tt/nniviHrvs Oal)anis Si Heine, Mus. Ilein. ii. p. 57, 18oD. Type 

 T. )ii(/ric(ipiUi(s (LatV.). 



Fig. 78. — Ti/rnnnlscus nir/ricapiUKs. 



The mendiers ot" this genus are likewise small birds, but there 

 is no crest and the crown is uniform. The bill is flattened, tlie 

 wi'ltli at the base being about equal to half the length oCthe ex|tosed 

 culmen. The wing is rounded, the second, third, and fourth 

 })riinaries buig^'st and e(jual, the first about equal in length to the 

 sixth. Tail square at the tip and about tive-sixths the lengtli ot 

 the wing. Tarsus about twice the leiigth of the exposed culmen. 

 The hind toe and claw are about equal in lenath to the middle toe 

 and claw. Coloration : male and female similar. 



Kejj to the Sjiecies. 



A . Throat yellnw like the breast T. r/mciliprf!, ]). 1 S3. 



13. Throat wliitc in foutrast to the brea.-t T. acer, p. Iho. 



