602 MR. A. G. BUTLER ON THE SPHINGID#. 
6. IsoGNATHUS LEACHII. 
Sphinx leachii, Swainson, Zool. Ill. 2nd ser. vol. iui. pl. 150 (1823). 
Tsognathus leachii, Felder, Wien. ent. Mon. vi. p. 187 (1862). 
q 
The primaries and body of this species are like my J. fumosa, but the secondaries 
like I. laura. 
7. IsogNATHUS METASCYRON. (Plate XCIV. fig. 7.) 
Tsognathus metascyron, Butler, P. Z.S. 1875, p. 258, no. 51. 
Villa Nova (Bates). Type, B.M. 
8. IsoGNATHUS SCYRON. 
Sphinx scyron, Cramer, Pap. Exot. iv. p. 23, pl. 801. fig. E (1782). 
Erinnyis scyron, Hubner, Verz. bek. Schmett. p. 139. no. 1491 (1816). 
Surinam. 
Not in the collection of the British Museum; the species most nearly allied to it was 
placed with Ancerya alope, and four other distinct species represent Anceryx scyron, in 
Mr. Walker's catalogue. 
9. ISOGNATHUS SWAINSONII. 
Isognathus swainsonii, Felder, Wien. ent. Mon. vi. p. 187 (1862). 
Rio Negro. 
Very nearly allied to J. scyron. 
Genus 5. CauTeTutA, Grote. 
Cautethia, Grote, Lyc. Nat. Hist. New York, viii. p. 202 (1867). 
1. CAUTETHIA NOCTUIFORMIS. 
(Enosanda noctuiformis, Walker, Lep. Het. viii. p. 232. no. 1 (1856). 
Cautethia noctuiformis, Grote, Proc. Ent. Soc. Phil. v. p. 168. no. 116 (1865); Herrich-Schaffer, 
Samml. auss. Schmett. ii. fig. 552 (1869). 
Haiti (Zweedie). Type, B.M. 
I think that @nosandra of Newman is too close to Znosanda for both names to be 
retained. 
2. CAUTETHIA CHINENSIS. 
(Enosanda chinensis, Schaufuss, Nunquam Otiosus, 1. p. 23 (1870). 
“ Kast India.” 
“ Distinguished from @. noctuiformis by its narrower body, altogether more grey-brown 
