SPHINGID^ Ot PEEU. 83 



From the first I made a regular habit of jotting down diary notes in regard to times 

 of appearance, food-plants, etc., and the information thus acquired is incorporated in 

 the "Detail Index" (pp. 111-114). I can only express the hope that these notes and 

 observations, confessedly incomplete, but faithfally recorded, will be found useful in 

 providing scope for the imagination and in stimulating further research upon a workable 

 basis. I have largely refrained from suggesting inferences and deductions apart from 

 such as are well grounded, and any omission of dates, food-plants, and localities, or the 

 entire overlooking of a species here and there, implies no negation of their occurrence, 

 but merely that they were unnoted by me during my limited sojourn in Peru. 



III.— DESCEIPTIONS OF THE SPECIES. 



N.B. — The number of the species, and the page on which it is most fully described 

 in the imaginal state, refer to the ' Revision of the Lepidopterous Family SphingidEE,' 

 by the Hon. Walter Rothschild, Ph.D., F.Z.S., and Karl Jordan, M.A.L., Ph.D., issued 

 in 1903. 



ACHEKONTIINiE. 



4. Hekse ciNGULATA. (Plates VIII. /-A; ; XY. e.) 

 R. & J. p. 10. 



General Distribution. — America, except extreme south and far north ; a tropical 

 and subtropical insect, rarer in temperate regions, occurring as a straggler as far north 

 as Canada ; Galapagos and Sandwich Islands. 



Though the larva was only occasionally met with on various species of Convolvulacete, 

 both on the seaboard and also in the Interior, the moth was often extremely common 

 at electric arc lamps in Lima and at various mining centres in the higher Andes, 

 the fact indicating that it is a species with a prolonged and enduring flight and of a 

 migratory tendency. 



The full-grown larva snaps audibly when disturbed. Like its congener convolvaU 

 in Europe its habits are secretive, but I never knew it to leave its food-plant until 

 immediately prior to pupation. Its frass is very large and ill-defined as regards the 

 customary hexagonal formation. Puparium a subterranean cavity. 



Ova. — Singly on under side of leaves of Convolvulacese. 



Larva. — First and second instars (no figure). Plain green, long and thin, with seven 

 oblique stripes clearly indicated in lighter colour. Caudal horn moderate in length, 

 straight, and slightly erect. 



Third instar. Two distinct patterns. 



Fig. /; resembling Sj^hinx ocellata., pale bluish green. Oblique stripes white, 



