222 A Classification of Lepidopterous Larvse. 



quadrate, sides sloping, the subdorsal angle about 75°; dorsum 

 narrowing before and behind, evenly arching. Watery granular, 

 whitish-green (not yellow), the pigment lying below the surface. 

 A subdorsal white baud along the ridge, edged above with blackish- 

 green. Dorsal and lateral blackish impressed spots, seen distinctly 

 only centrall}-. The subdorsal lines approach each other closely at 

 the extremities. Spiracles white, brown centrally ; a subventral 

 white line. Thoracic feet small, tipped with brown. Venter smooth, 

 clear, colorless, translucent, without legs. Length 15 mm.; width 

 8 mm. 



Packardia geminata Packard. 



Bodj^ elongate elliptical, sides nearly perpendicular, slightly ridged 

 above the spiracles ; dorsal region flat, highest at joint t and sloping 

 each way; subdorsal ridge moderately prominent, straight; joint 

 13 prolonged into a pointed tail very faintly marked with reddish 

 toward the end. Along each subdorsal ridge is a series of little 

 conical tubercles (seen with a lens), two per segment, close together 

 and each bearing a very short seta; a similar row along the super- 

 stigmatal ridge, but single and smaller, and the setae even shorter 

 and finer than those on the subdorsal ridge. A series of dorsal and 

 lateral depressions, not distinctly different from the rest of the body 

 in structure or color, though the lateral ones are slightly darker. 

 The body is thickly covered with little transparent granulations. 

 Color pale, decidedly whitish green (not yellowish), a white line 

 along the subdorsal ridge bordered above with dark green, the lines 

 obsoletely connected on joint 3, but not passing on to the tail. A 

 row of obscure white dashes along the superstigmatal ridge, looking 

 as if beneath the surface of the skin. Spiracles small, round, pro- 

 jecting, white. A faint whitish line separates the clear colorless 

 venter from the sides. Head pale green, the mouth parts largely 

 dark brown. It is retracted below, and folded within joint 2, which 

 has the spiracle somewhat flattened. Length of larva 14 mm., 

 width 6.5 mm. 



Packardia elegans Packard. 



Head retracted under joint 2; joint 2 partly under joint 3; dorsal 

 region narrow; body highest at joint 1, rounding to the extremi- 

 ties. Subdorsal ridges distinct, not raised, segmentally undulate, 

 approaching each other posteriorly and marked with a yellow line 

 which begins on joint 3, not joining over the dorsum. Sides nearly 



