3. ACANTHYLIS BRUNNEITORQUES, (Lafres.) 
Cheetura brunneitorques, Lafresnaye. Rev. Zool. 1844, p. 81. 
Chetura ruficollis, Johnson. Ann. and May. Nat. Hist. viii. p. 
351, (184 )? 
Ilirundo Robiui. Less. Traité i. p. 270? (18381.). 
1. Adult, Columbia. Presented by Edward Wilson, Esq. 
1. Adult, Columbia, from the Rivoli collection. 
. ACANTHYLIS SPINICAUDA, (Temm.) Pl. Enl. 726, fig. 1. 
Cypselus spinicaudus, Tem. Pl. Col. vi. p. 78. 
1. Adult male, Cayenne. 
2. Adult female, Cay enue. 
. Young female, yayenne, 
4, 5, Adults, Cayenne, from the Rivoli collection. 
6. This species ? Guiana. Presented by Henry G. Dal- 
ton, M. D. 
. ACANTHYLIS CINEREOCAUDA, Cassi. Proc. Acad. Philada. v. p. 
08, pl. 13, fig. 2, (1850.) 
Hirundo poliourus, Temm. Pt. Col. vi. p. 78. Pl. Ent. 126, fig. 2? 
Lc Adult, South America, from the Rivoli collection. 
. Adult, South mentor 
root 
. ACANTHYLIS CORACINUS, (Bonap.) 
‘ Cypselus coracinus, Mull. Mus. Lugd.”” Bonap. Consp. Av. p. 64. 
1. Adult male, Sumatra. 
2. Adult female, Sumatra. 
. ACANTHYLIS NuDIPES, (Hodg.) De Lessert, Voy. India, Ois. pl. 9. 
Cheetura nudipes, Hodyson. Journ. As. Soc. Bengal, 1836, p. 779. 
Cypselus leuconotus, De Lessert. Guerin’s Mag. 1840 p. pi. 20. 
1. Adult, India, from the Rivoli collection.’ 
. ACANTHYLIS CAUDACUTA, (Lath.) Gould, B. of Aust. ii. pl. 10. 
Hirundo caudacuta, Lath. Ind. Orn. Supp. p. 57. 
-Hirundo fusca, Steph. Gren. Zool. x. p. 138? 
Cheetura australis, Steph. Gen. Zool. xiii. p. 76. 
Chetura macroptera, Swains. Zool. Ill. n. s. pl. 42. 
1,2. Adults, Australia, from Mr. Gould’s collection. 
3. Adult female, Australia. 
. ACANTHYLIS ZONARIS, (Shaw.) Temm. Pl. Col. 195. 
Hirundo zonaris, Shaw. Cim. Phys. pl. 55, (1796.) 
Hirundo albicollis, Viel. Nouv. Dict. xiv. p. 524, (1817.) 
Hirundo collaris, De Wied. Reise Bras. i. p. 75. 
““Cypselus torquatus, Licht.” Bonap. Coen: Aly. p. 64. 
Cypselus senex, Zemm. Pl. Col. 397? 
1,2. Adults, Brazil, from the Rivoli collection. 
3. Adult male, Brazil. 
4, Adult female, Brazil. 
