PIERINAE: TIIK GENUS ANTHOCHARIS. 1141 



as broad as the base, with proHiinoiit, tolcralily sliaip, vertical ribs and very distinct, 

 stnii^lit. raised lines transverse to the interspaces, forming quadransnlar cells. 



Caterpillar at birth. Head well rounded, a little depressed on the median suture 

 above, smooth exceptinj; for the few minute i)apillae supporting hairs. Body fur- 

 nished with several series of lar!;e, conical tubercles, rather broader th.an high, bearing 

 straight, erect, ecjual l)ristles which are as long as the segments excepting on the first 

 and second thoracic segments ; on the first they are of double length and on the second 

 halfway between the two, and all of those of the first and second segments directed 

 forwards; all are delicately clubbed and support a hyaline droplet of fluid at tip. The 

 tubercles are arranged in a supralateral row, becoming laterodorsal on the ninth abdo- 

 minal segment, placed anteriorly; a lateral series placed posteriorly; a suprastigmatal 

 series directly above the spiracles ; and an infrastigmatal series placed posteriorly. 



Mature caterpillar. Head broail, stout, very regularly and broadly arched, with 

 an exceedingly sliglit incision at tlie frontal suture; on a side view, appressed below, 

 so as to be of equal depth on the lower two-thirds, roundly retreating above ; triangle 

 very broad, reaching to the middle of the upper half of the head; surface moderately 

 smooth except for the short, forward directed, denticle-like papillae which stud the 

 surface infrequently, an open cluster of which on either side of the front above, con- 

 sisting of about half a dozen, are larger and more conspicuous than the others, while 

 those on the cheeks especially posteriorly are smaller than elsewhere; epistoma ex- 

 ceedingly broad, not very deep, the front scarcely concave, the lateral angles sharp; 

 labrum of the normal width with a moderately deep and round excision in tlie middle, 

 nuuuled at the outer corners. Basal joint of antennae very large but low; the second 

 a mere ring; the third cylindrical, not more than h.alf so long again as broad; fourth 

 minute, not so long as half the diameter of the third ; the bristle exceedingly long 

 and tine. Ocelli six in number, equal in diameter, the four anterior ones very promi- 

 nent, subequidistant, separated by spaces about equal to the diameter of any one, 

 forming an arc of a circle whose centre would be half way to the back of the head; 

 the fifth and sixth scarcely elevated above the surface and very inconspicuous; the 

 fifth situated behind and forming an equilateral triangle with the second and fourth, 

 counting from above downward; the sixth behind the second and above the fifth. 



Body cylindrical, very uniform in width but falling off above on the last two seg- 

 ments to a very broadly rounded extremity, .\bdominal segments divided by distinct 

 transverse creases into seven subsegments, of which the second is nearly twice as 

 large as the others which are subequal among themselves. They are provided with a 

 large number of very minute papillae of varying sizes which are arranged both in 

 longitudinal and transverse rows, the transverse rows directly related to the subseg- 

 ments, and excepting on the largest subsegnient always arranged along the middle of 

 the same ; on the larger ones they are more irregular. There are also definite series 

 of very large and high, conspicuous, conical papillae arranged more definitely iu 

 longitudinal series, a little irregularly upon the first and second thoracic segments; 

 on the first thoracic segment there is a cluster of three of these papillae in the latero- 

 dorsal region, two of them anterior and one posterior; besides which there is a single 

 one a little iu advance of the middle, halfway between them and the prothoracic 

 spiracle ; ou the other thoracic segments there is a transverse series on the larger 

 subsegments of six subequidistant papillae. The abdominal segments have similar 

 papillae iu a laterodorsal series placed on the larger snbsegment, a supralateral series 

 on the next to the last subsegment, and a laterostigraatal series, scarcely behind the 

 spiracle, besides an infrastigmatal series a little behind the middle, extending also 

 upon the second and third thoracic segments where it is anterior; of these papillae 

 those of the laterodorsal and laterostigmatal series are the larger and all support a 

 slender, tapering bristle, slightly longer than the hairs of the smaller papillae, and 

 trumpet-shaped at tip, supporting a globule of hyaline fluid. Under surface of the 

 first thoracic segment with a pair of large, depending, appressed and transverse sacs, 

 the surface of which is scal)rous with minute conical papillae, several times higher than 

 broad; spiracles craterifomi, very regular, broad-oval. Legs very large at base, rap- 



