297 



lunated anteriorly, black; eyes, six on each side, ari-anged as in Fig. 38; 

 lenses glassy-wliite, or diaphanous. Triangular front in the young caterpil- 

 lars margined each side Avith black, with two black dots below; in 

 old ones faintly margined at side only, with brown. Body pea 

 green, lateral line beginning with the fourth segment; the upper 



two thirds (containing white spiracles) broad, rich ferruginous brown, 



, . Fi"". 41. 



deeper above, lower third white, slightly variegated below with 



streaks of pale brown; the brown line extends into the posterior feet. Be- 

 fore the origin of the spurious feet a triangular spot, and the base of tri- 

 an<i-le anteriorly, pale brown spotted with white; in the fourth and fifth 

 seo-ments the same spot but smaller; and on tenth, eleventh, and twelfth 

 segments the spot is very large and contiguous from segment to segment. 

 Anterior feet hairy, pale brown; articulations yellow. Posterior or spurious 

 ones darker brown, with white hairs. Inferior surface of body slightly hairy. 



Ceratocampa regalis Fabr. 



July 20, is -28. Found on the black walnut tree a larva Hke that here 

 sketched, and on the 4th, or 5th of August, 1832, discovered two large flat- 

 tened e^gs, from which similar larvae were hatched at that time. 



Each of the segments has six branching spines, except the eleventh, wMch 

 has seven, and the twelfth which has eleven. Body, first 

 segment with four tubercles of a pyramidal shape, the 

 two dorsal ones armed with a barbed spine, terminated 

 by a ball with two lateral obtuse points, — see Fig. 42, a; 

 the two lateral tubercles with simple bai'bod spines not 

 half the length of the dorsal spines; second and third 

 segments each with four barbed, ball-terminated spines; lateral sim- 

 ple ones wanting; remaining segments, except the last, "with four barbed 

 or branched spines; the penultimate segment has besides, in front of the 

 four, a long dorsal one barbed, and ending in a lunated knob; last segment 

 with nine in two series, five before and four behind, all branched; the 

 dorsal one of the anterior series bifurcate at tip, or neariy lunated,— see 

 Fig. 42, h. Color of body black above and beneath; an obsolete series of 

 ferruginous lateral lines directed obliquely downwards towards the tail, 

 most conspicuous on the posterior half of the body; sixth and seventh seg- 

 ments ferruginous above; spines pale ferruginous, black at tip. 



July 21, A. M., it cast off its skin. July 25, cast its skin again. 



Pupa. 5 . Smooth, oblong, robust, thick and rounded before, neariy obtuse 

 behind , and terminating in a very small bifid tubercle. A few elevated points 

 at the base of the antenna cases, and over the shoulder covers; likewise one 

 on each half of the prothorax; metathorax with two large, transverse eleva- 

 tions. A deep furrow between the penultimate (eleventh) and antepenul- 



