NORTH AMERICAN LEPIDOPTERA. 81 



In 1886 in a very well wi'itten pamphlet on " The Sphingidte of 

 New England," Prof. Fernald gives very careful and accurate de- 

 scriptions of the genera and species of this section. jNIany of my 

 suggestions are adopted, while the Professor differs considerably in 

 his estimate of certain genera. 



The generic descriptions are careful and complete, and in this 

 paper I have drawn largely from them, finding them in almost every 

 instance absolutely correct. Characters not noted by jDrevious au- 

 thors are here fully described, and the paper, limited as is its scope, 

 is a positive and valuable addition to our knowledge. As far as 

 possible the descriptions of the early stages are also given, and to the 

 beginner this little pamphlet is invaluable, as it is clear and simple, 

 and yet scientifically accurate. 



I reproduce his table of genera : 



Toogue loug and horny o 



Tongue short and membraneous Kiiieriiitliiiife 16. 



2. — Abdomen with a well-developed anal tuft, flight usually diurnal. 



IVIiiei-o^Iossiiiae 4. 



Abdomen untufted, flight creiniscular, or nocturnal 3 



3. — Thorax tufted, outer margin of wings obliquely rounded. ..Spliino-inji. 7 

 Thorax untufted, outer margin of wings more or less excavate. 



C'iKjeroeainpiiiH* 12. 



4. — The middle of the wings transj)arent Heiiiaris 



The middle of the wings opaque - 



5. — Outer margin of the fore wings entire Lepjsei^ia. 



Outer margin of the fore wings angulated g 



6. — Fore tibia spinose Aiiipliion. 



Fore tibia not si)inose Thyrous. 



7. — Eyes strongly ciliated g 



Eyes scarcely, or not ciliated ... ^q 



8. — Fore tibife spinose g_ 



Fore tibisE not spinose I>4>lba. 



9.— First joint of fore tarsi with a row of three or four stout curved spines on 



the outside H.yloious. 



First joint of four tarsi without stout curved spines on the outside. 



!§i|>Iiiii.if. 

 10. — Head prominent; eyes large ; palpi well developed... Plilegetlioiitius. 



Head sunken into the thorax ; eyes small; pali)i short 11. 



11. — Outer margin of fore wings excavate on vein 2 Ceratomia. 



Outer margin of fore wings entire, rounded Daroiiiiiia. 



12. — Outer margin of fore wings angulated Deidaiiiia. 



Outer margin of fore wings entire, or sinuous I3 



13. — Antennae straight; largest near the outer end Deilepliila. 



Antennae largest in the middle ; hooked at the outer end 14. 



14. — Spurs of the middle and hind tibiae short, legs weak 15. 



Spurs of the middle and hind tibiai long, legs stout Pliilaiupeliis. 



TRANS. AMEE. KNT. SOC. XV. (11) MAY, 1888. 



