204 A Classification of Lepidopteroiis Larvae. 



G Simple, with a siugle seta Noctuidae (in part), Agaristidae, 



Notodontidae, Geometridae, Drepanidae, 



Lithosiidae (in part) 

 GCt Tubercles with many hairs. 



H Without auy development of hairs from the skin. 



Noctuidae (in part), Pericopidae, Arctiidae, 

 Euchromiidae (=Zygienidie), Lymantriidae 

 HH Tubercles greatly reduced ; abundant hair from the skin. 



Lasiocampidae 

 FF Tubercles with marked unequal reduction, or greatly modified or 

 absent. 



I Tubercles still wart-like, hairy. ^ 



Lithosiidae (in part), Lycaenidae (in part) 



II Tubercles greatly modified or absent. 



J Tubercle i normal (when present). 



K Tubercles produced into naked fleshy horns, or represented 



by colored spots Papilionidae, Nymphalidae (in part) 



KK No trace of tubercles Nymphalidae (in part), 



Pieridae, Hesperidae 

 JJ Tubercle i consolidated with its fellow on the dorsum. 



L No unpaired dorsal tubercle anterior to abdominal segment 8. 



M Tubercles largely present Saturnina 



MM Only the dorsal tubercle on segment S Sphingidae 



LL A line of unpaired dorsal tubercles the length of the abdo- 

 men anterior to segment 8, or largely so. 



Nymphalidae (in part) 



Suborder Jugatae. 

 Family Hepialidae. 



Very little is known about the larvae of our native specie.^. D. 

 S. Kellicott has described Stenopis argenteortiaculala,- and this is 

 the only one of our species of which the larva is known. Unfor- 

 tunately the description is inadequate for my purpose. I infer from 

 it, however, that the larva has the set^ single and possesses a 

 dorsal shield on the mesothoracic segment as well as on the pro- 

 thoracic and the anal (10th abdominal segment). See Fig. 2 for 

 illustration of an European species. 



Suborder Frenatse. 

 The isolated Family Psychidae. 



This family seems to be equal in rank to all that follow, taken 

 together. I have already alluded to the presence of a dorsal shield 



^ The young larvae of many Papilionidae will also come in here. 

 2 Insect Life, vol. I, p. 251 (1889). 



