riERlXAK: TlIK GENUS PIEHIS. 1173 



with sinnll, slender, conical wnrts, hcnriii;; inodcrntcly Ion;;, cnrviii'r, (Idicnte liairs; 

 triangle very laritc scarcely liiirhcr than hroail, Init reaclilii;; fully tlirec-flftlis way up 

 the front. Antennae with the llrst joint pretty larf;e, niaininiform, second very short, 

 scarcely notlcealilc. third scarcely narrower than the second, a little swollen at the tip, 

 half as lonir asain as l)roa(l, the fonrth excccdinjily niiinite. Ocelli six In nunil)cr, 

 fonr placed In a sli-ihtly ciirvlnjr row. Its convexity forward and sllshtly downward, 

 directly behind a sliglitly Impressed line, the upper three separated from each other by 

 their own diameter, the fonrth and lowest removed from the third by twice that dis- 

 tance, the flfth behind and a little above the tirst, and separated from it by a little less 

 distnnce than the latter from the third; the sixtli beliind the second and ecpially dis- 

 tant from it and the fonrth, with wliieh It fonns a little less than a riiiht an^le. The 

 llrst four mentioned are prominent; all arc of e(pial size. Labrnm laritc and quite 

 broaii. the front an-ridarly but not fireatly excised in the middle. Mandibles short, 

 very broad, not stont. the edjre rounded, delicately dentate above, minutely denticulate 

 below, the teeth trianjrular, not very long. Maxillary palpi with the joints equal in 

 length, successively considerably smaller, tlie inner palp with very short and pretty 

 stout joints. Spinneret short, tapering, rather slender, bluntly pointed. 



Body cylindrical, largest in the middle, tapering very gently, uniformly and pretty 

 equally toward either end, tapering l)ehind to a bluntly rounded extremity. Segments 

 divided faintly by transverse. Impressed lines, into seven divisions, growing succes- 

 sively smaller toward the posterior end of the segment; on the thoracic segments a 

 less number, usually live. Body covered witli ndniite. cylindrical, hairless warts, 

 scarcely tapering, abruptly docked, higher than broad, arranged pretty regularly in 

 transverse rows, one row to each division of the segments; also furnished with 

 abundant, irregularly scattered, very minute, tapering warts, giving rise each to a very 

 short, and very delicate hair. Spiracles of tnoderate size, obovate, more than half as 

 high again as lonu'. I>egs lleshy. large and plump at base, tapering rapidly, not very 

 long, last two joints appressed pretty strongly; claw minute-, slender, compressed, 

 heeled at base, curving rather gently. I'rolegs {86:.!I) large, pretty long, tapering 

 pretty regularly but not very strongly, the booklets arranged in a triple curving row, 

 thirty-six in number, their exposed jiortion rather short and stout, compressed, taper- 

 ing, bluntly pointed, rather strongly curved, tliose in the same row distant from each 

 other by three or four times their diameter; outside the proleg, at the base of the 

 pad, is a row of half a dozen similar booklets. The glandular swelling on the under 

 surface of the llrst thoracic segment (86 : .'!«!) is larger than usual. 



Chrysalis. The head is well ronndcd, tlie central prominence conical, bluntly 

 pointed, moderately long and slender; the protiiorax is sliglitly depressed and hol- 

 lowed on eitlier side, above its anterior border, with a pair of subdorsal, rounded, 

 eaual, forward directed tubercles, longer tlian broad, projecting over the extreme 

 base of the antennae, the median ridge of tlie whole thorax strongly compressed, 

 high, especially ou the mesonotuin, where it increases in height to the middle, and is 

 there abruptly angulated at very nearly a right angle, the anterior slope to the base of 

 the frontal tubercle a little concave, the posterior slope straight and only a little 

 raised above the direction of the whole dorsal ridge. The lower surface, from the 

 eyes to the tip of the wing, is very nearly straight, scarcely arched, the lower surface 

 of the abdomen continuous with it; the sides of the wings straight and parallel, tlie 

 basal wing tubercles prominent only by the narrowing of the body in front, and by 

 broad, dull, inconsjiicuous ridges, which are directed downward and Ijackward, and 

 vaguely upward and inward. From the upper border of the eye a slight ridge runs 

 bactward in a straight course, through the basal wing tubercle, to the upper posterior 

 portion of the wing, fading out before reaching it ; first, second, and anterior half of third 

 segment of the abdomen bro.idened and irregularly flattened above and furnished at 

 the extreme lateral edge of the flattened part with a sharply angulated ridge, the 

 outer half of which turns inward as well as downward, and which, curving a little 

 downward on the posterior iiaif of the third, and on the fourth segments, continues 

 as a distinct, though rather slight, suprastigmatal ridge, to tlie lateral bases of the 



