1911] Study of Caterpillars of Sphingidae 275 



77. diffinis axillaris. Head conspicuously rough. Anterior 

 band of cervical shield of crowded granulations, not all in a 

 single row; the shield decidedly rougher than in the normal 

 form; horn longer than head. 



II. thysbe. Even rougher than the preceding, the cervical 

 shield with the granulations almost in contact, and on the 

 anterior edge more or less confluent. Horn long and the outer 

 part slender. Femora jet-black and very conspicuous. 



In the next to last stage, H. diffinis, at least can hardly be 

 separated from Macroglossa. The horn is minute. 



Erinnyis iDilophonota). Seta ii of labrum fully as high as i, 

 and the setae i, ii and iii almost evenly spaced; iii, iv and v 

 about evenly spaced along the outer edge. Supraanal sometimes 

 with the rudiments of a pair of tubercles. Notch of labrum 

 hardly f its height, in depth. Head squarish, and full as 

 high as wide; metathorax sharply humped; the abdomen ab- 

 ruptly smaller, and cylindrical. Horn short. In E. edwardsii 

 the horn is somewhat shorter than the head, in E. cllo, only a 

 third as long, and only twice as long as thick. The tubercles 

 on the anal plate are distincter in edwardsii, and the supraanal 

 is narrower. 



Pseudosphinx (I, Figs. 47 and 50). Cylindrical with slender 

 horn. Fourth ocellus as far from the lower as from the first; 

 front wider than high and nearly half as high as head. Labrum 

 very shallowly notched, with the setas i and ii nearly on a level, 

 and almost evenly spaced ; iv directly below iii and much nearer 

 to it than to v. vi not far from margin. Two conical spines 

 on anal plate. 



The following species were examined. I am especially 

 indebted to Prof. J. B. Smith; Dr. Geo. Dimmock, Mr. William 

 Beutenmuller, and Dr. H. G. Dyar, for the privilege of examin- 

 ing specimens in their own collections and in those of the insti- 

 tutions they represent. Exotic species are in italics; those from 

 the far west, or from Florida only, are also indicated. 



Sphixgin.e 



Acherontia atropos 

 Herse convolvnli 

 cingulata 

 Cocytius antasus Fla. 

 Phlegethontius quinquemaculatus 



Carolina (sexta), I, Fig. .51. 

 Atreides plebeius 

 Dolba hykeus 



