LACHNEIDES. 



455 



6. Lasiocampa. 



7. Macrothylacta. 



12. cosmotriche. 



13. Selenephera. 



14. Epicnaptera. 



15. Gastropacha. 



16. Odokestis. 



&'. The "felt-hairs" of the dorsum extend also to the 

 sides 



b" . The "felt-hairs" of dorsum are separated from the 

 lateral hairs by a sharp colour-boundary 



b. Some segments different from others in the hair- 

 clothing or in particular markings ("Prachtfiecke," 

 i.e., " show " or " splendour" spots). 



* All segments, or at least segments 6-10 beneath, on the 



sides, with 2-4 short streaks, which are clothed with 

 appressed silky hairs (" Seidenstriche," i.e., "silk- 

 strokes "). 



a'. Body cylindrical without lateral flanges; the dorsum 

 more or less clothed with hair-tufts. 



b'. Segments 6-12 dorsally without hair-tufts. 



e\ Segments 2-5 dorsally with 4-6 short hair-tufts . . 9. Diplura. 



c" . Only segments 2 and 3 with hair-tufts . . .. .. 11. Chilena. 



b" . Also segments 6-11 dorsally with hair-tufts; segments 

 2-1.1 with a long dorsal tuft. 



c'. At least segments 4-10 each dorsally with two longi- 

 tudinal rows of 3-5 short hair-tufts 



c" . Segments 3-10 dorsally with four hair-tufts densely 

 placed 



a". Body flattened with distinct leg-like lateral flanges on 

 all segments ; dorsum without hair-tufts, but with 

 two " Prachtfiecke " on segments 2-3. 



V . The " Prachtfiecke " entirely naked 



b". The "Prachtfiecke" densely clothed with scales 



** All segments without lateral "strokes," but with leg- 

 like flanges on the sides. 



a'. Dorsum only with one almost naked " Prachtfleck " (on 

 the two segments) 



a". Dorsum with two large "Prachtfiecke" (on segments 

 2 and 3) which are densely clothed with bristly hairs. 



b' . Segments 4-11 dorsally with two distinct warts, or 

 replacing the warts two small groups of bristles or 

 scales, or entirely scaled. 



c\ Body almost cylindrical, only a little flattened; the 

 lateral flanges well-developed only on the lst-3rd 

 segments . . 



c", Body broad and much flattened; lateral flanges well- } 

 developed . . . . . . . . . . . . . . J 



b" . Dorsum wholly without warts, fascicles of bristles or 

 scales 



Following this, in 1898, Dyar published a paper entitled "Revision 

 of the Lachneidae " (Canadian Entomologist, vol. xxx., pp. 2-6). In 

 this a synoptic table of the genera was published which reads as 

 follows : 



1. Secondaries with veins 7 and 8 from intercostal cell, the 



bar short, or vein 7 from the subcostal vein 

 Secondaries with very large intercostal cell, vein 7 near 6 ; 

 the bar long 



2. Primaries ? long and narrow, apex produced 

 Primaries broader 

 Wings of female absent 



3. Primaries with veins 8 to 10 stalked 

 Primaries with vein 8 not stalked 



4. Secondaries with veins 4 and 5 stalked 

 Secondaries with veins 4 and 5 from the angle of the cell 



5. Costa of secondaries highly excised. . 

 Costa of secondaries slightly or not at all excised. . 



6. Primaries with veins 6, 7 free or stalked ; 6 to 8 stalked ; 



4, 5 of secondaries as above . . . . . . . . 7 



* A footnote states that Aurivillius knows only one larva in each genus, and 

 that he will not, therefore, venture to indicate the differences. 



17. Dendrolimds. 



18. Pachypasa. 

 20. Taragama.* 



19. Paralebeda. 



2 



23 



3 



5 



30 



Bhima. 

 4 

 Taragama. 



Sdana. 



Lebeda. 



6 



