HELICONIA I. 



irregularly placed ; the dorsals measure .2 inch, the 1st laterals .17, the lower .14 

 inch, and there is little variation in the length of the spines of each row ; legs 

 brown, tipped black, pro-legs brown, with a black spot on the side of each; head 

 obovoid, rounded in front, truncated, a little depressed at the suture, the vertices 

 but little elevated, rounded ; color greenish-white, vitreous; on either side the 

 suture on mid-front a round black spot ; the ocelli black on a small black patch ; 

 mandibles black ; on each vertex a black spine nearly like those of the body, but 

 less tapering and more blunt, .12 inch long, directed forward at about 45% and a 

 little recurved. (Fig./,/^^'^ ^) 



As the larva approaches suspension the spots change to brown, and the white 

 becomes dull and sordid. Twelve hours after suspension, pupation takes place. 



Chrysalis. — Length to top of head .95 inch, to end of processes on head 1.1 

 inch ; slender, compressed laterally, the thoracic segments on ventral side highly 

 arched and rounded abruptly down to alxlomen ; the sides of this elevation 

 covered entirely by the wing cases, sloping, almost tlat or a little convex, the two 

 wing cases not quite meeting, but separated by a narrow depressed ridge, on 

 either side of which is a row of small bead-like tubercles, each giving out at top a 

 short sharp In-istle or thorn ; this ridge widens anteriorly so as to include the an- 

 tennae cases, and the rows of beads pass along and around head case to its top on 

 the dorsal side, but for a little distance at the base of the antenufe lose their bris- 

 tles ; head case prominent, compressed transversely, nearly square at top ; upon 

 each vertex a narrow leaf-like pi'ocess, lanceolate, flattened and thin, serrated on 

 both edges, divergent, like horns ; mesonotum prominent, compressed at top into 

 a thin carina which rises on the anterior part in a douljle curve to a sharp point, 

 but on the posterior side slopes at about 45° ; followed by a rounded excavation 

 considerably longer than the mesonotmn itself ; abdomen cylindrical ; on the two 

 upper segments a large sub-dorsal, flaring, flattened process rounded irregularly 

 on the edge and completely spanning both segments ; on the next segment is a 

 small sharp rounded process, and on the next another small and flattened ; on the 

 next a sharp tul)ercle, in some cases flattened ; on the tops of all these processes 

 .are thorns, one on each of the smaller, and two on the largest ; in row with these, 

 on the depression and on the sides of mesonotum, are four low conical tubercles, 

 each with a short thorn ; segments 9, 10, 11, in the ventral line, have the ante- 

 rior edges turned up and produced into low divergent points ; at the base of the 

 head case on dorsal side a large burnished gold spot, and the tubercles behind the 

 mesonotum gilded ; general hue brown, in shades ; the anterior parts, which in- 

 cludes head case, mesonotum, and half the wing cases, being light or yellowish ; 

 the rest of wing cases dark, or streaked dark in the interspaces of the wings ; the 

 light part of these cases somewhat gray or whitish ; the processes on head and 



