470 CTPSELIDJE. 



and less so m the middle of the abdomen, which looks pure white ; 

 under tail-coverts blackish with longitudinal white stripes. Total 

 length about 5-4 inches, wing 4-2, lateral rectrices 3, central 1-3. 

 Hah. South America, Guiana, and Brazil, and in Eastern Peru. 



Purchased. 

 Salvin-Godman Coll. 



Sclater CoU. 

 Sclater Coll. 

 Sclater Coll. 

 Salvin-Godman Coll. 



Salvin-Godman Coll. 



Subfamily II. CH^ETURIN^. 



Keij to the Genera. 



ft. Shafts of rectrices stiff and spinous. 



a'. Shafts of rectrices veiy stiff, with percep- 

 tibly prominent spinous points. Plumage 

 generally with very different colours, 

 often with large parts of white or light 



grey, never with rufous 6. Ch^tuea, p. 470. 



b'. Shafts of rectrices not so stiff, and without 

 perceptibly prominent spinous points. 

 Plumage uniform or with rufous collar 

 in the male . . 7. Cypseloides, p. 492. 



l>. Shafts of rectrices ordinary and without spi- 

 nous points 8. CoLLOCALiA, p. 49G. 



6. CH.ffiTUIlA. ^ 



Type. 

 Ohjetura, Steph. Gen. Zool. xiii. pt. 2, p. 76 (1826) . . C. pela^ica. 

 Acanthylis*, Boie, Isis, 1826, p. 971 (descr. nuUa) . . C. spinicauda. 

 Hirundapus \, Hodgs. Journ. As. Soc. Bang. v. p. 780 



(18.36) C. nudipes. 



Pallene, Less. Compl. Buff. viii. p. 49.3 (1857) C. gigantea. 



Hemiprocne, Nitzsch, Pterylogr. p. 12.3 (1840) C. zonaris. 



Hiruudinapus, Scl. P. Z. 8. 186-5, p, 607. 



Rhapliidura, Gates, B. Burm. ii. p. 6 (1883) C. leucopygialis. 



I cannot recognize the genus Hemiprocne, because the form of 

 the tail alone cannot be regarded as being sufficient to separate 

 genera in the Ciipaelidce, as the species of the genus Micropus 

 clearly show. 



Eanc/e. From Amoorland throughout Asia, except its most 



Should be spelt Acanthyllis. 

 Hirundmajpus corr. 



