82 JOHN B. SMITH. 



15. — Scales of the head lying smooth and flat Clioeroeanipa. 



Scales of the head in a ridge or tuft between the anteunse Evfry.'*. 



16. — Outer margin of the fore wings evenly rounded and entire Elleiiia. 



Outer margin of tlie fore wings scalloped, or more or less angulate 17. 



17. — Fore tibiae with a stout spine at tip; large species Triptogoii. 



All the tibiae spinose ; medium .«ized species Cressoiiia. 



Tibiae not spinose; medium sized .species ; hind wings with an eye spot. ..18. 

 18. — Outer margin of the fore wings scalloped I'aoilias. 



Outer margin of the fore wings more or less angulated ^niei'iiitlius. 



Thi.s is followed by a s}'no])sis of the larvse so far as known, which 

 need not, however, be reproduced here. 



Prof. Fernald recognizes four subfamilies, following somewhat my 

 arrangement of the genera, in the location of Deidamia and Ellema 

 and in the situation of the Smerinthince. 



His arrangement is as follows : 



Macroglossin^ : Hemaris, Aellopos, Lepisesia, Amphiov, Thyreus. 



Sphingin^ : Ceratomia, Daremma, Phlegethontms, Spkinx, Dolba, 

 Dilophonota, Hy/oicus. 



Chcerocampin.e : Deilephlla, Philaiapelus, Ch(erocampa, Everyx, 

 Deidamia. 



Smekinthin^i-: : Triptogon, Paonias, Smerinthus, Cre-isonia, Ellema. 



In marked contrast to the above, is a pamphlet by Mr. A. R. 

 Grote, in 1887, on " The Hawk Moths of North America." This is 

 a loose treatment of the Sj)hingidce of the Atlantic region, with in- 

 definite descriptions in popular style of the genera and species, 

 largely culled from Prof Fernald's paper and with some remarks on 

 the geographic distribution of genera and species, which form the 

 most interesting and useful part of the whole work. 



The genera Deilonche for Chmr. tersa, Atreus for Sphinx plebeiu>< 

 and Cop i smerinthus for Smer. cerysii, are created on information 

 gained from Prof Fernald's paper. 



The arrangement in the Check List of 1882 is retained in essen- 

 tials, except that the subfamily terms Macroglossin^, etc., are 

 here used to rejilace the inexpressive terms for the sections used in 

 the li.st. 



This enumeration of authors is by no means complete, but it em- 

 braces all those who have either done general monographic work, or 

 have done similar work on the American species. Many authors 

 have given us isolated descriptions of genera and species. Besides 

 the older illustrated works of Drury, Cramer and Abbot, Mr. 

 Strecker h:is, in recent times, very acceptably figured a large pro- 

 portion of our species. 



