NYMPIIALIXAK: PHYCIODES THAROS. 635 



Thinl atd'/c. lland (79 : 13) .sluiiiiiy blackish brown witli a pallid triangle, a pallid or 

 luteo-pallid, scarcely oblique, broad stripe longitudinally across the top of each hemi- 

 sphere and a similarly colored patch at base of mandil)les extending the color of the 

 triangle in this quarter; scattered fine, pale hairs as long as the depth of the licad. 

 Labrnni luteons, fusco-testaceous at base; antennae pallid with a fuscous tip. Body 

 greenish, olivaceous brown, much mottled with darker and lighter tints, darker on the 

 sides than on top, witii moderately broad, pallid, greenish laterodorsal and infra- 

 stigmatal stripes, involving to some extent, as do the other longitudinal markings, the 

 color of the tubercles, these being almost wholly pallid in the laterodorsal and infra- 

 stigmatal series, more or less iufuscated elsewhere; but the spines are more or less 

 embrowned in all of them. The tubercles are of nearly the same character a.s in the 

 preceding stage. Legs and prolegs as thei'c. Length, 5 mm. ; breadth of head, .50 

 mm. ; length of tubercles, .25 mm. 



Last staf/e (72 : 6, 9). Head (72 : 8 ; 79 : 15) shining bronze with black hairs ; across 

 the summit a narrow^ whitish bar, thickened at the front of each side, and bluntly 

 liarbcd on the outer side; in front a triangular spot connecting at the lower angle with 

 a sickle-shaped bar on the side. Body, blackisli browMi, dotted, especially on dorsum, 

 with yellow; the spines stout at ))ase and there mostly yellowish; the bristles l)rown, 

 black tipped ; a black dorsal stripe often wanting ; a yellow^ stripe following the latero- 

 dorsal spines and a band of the same color the infrastigmatal series; sometimes there 

 is a black lateral band. Length, 21.5 mm. (after E(hvards, my own description having 

 been lost). 



Chrysalis (84: 20-22). Grayish white, the abdomen a little darker; surface mi- 

 nutely corrugated and dull Avhitisli, the crevices filled with pale, yellowish brown, 

 more profusely along the anterior portions of the abdominal segments, on most of the 

 warts and especially upon the borders of the top of the head ; ocellar ribbon immaculate : 

 wings with a dusky central spot and smaller dusky spots at the nervule tips. On the 

 abdomen there is an inconspicuous, narrow, interrupted, dull yellowish, substigmatal 

 band, followed beneath by a band formed of a few^ fuscous spots; there is also a 

 faint trace of a dull yellowish baud, following the laterodorsal row- of warts, 

 Spiracles brown, margined with pale. Length, 10.3 mm. ; width at extremity of head, 

 2.25 mm. ; at mesothorax, 4 mm. ; at fourth abdominal segment, 4 mm. ; height at 

 thorax, 3.6 mm. ; at fourth abdominal segment, 4.5 mm. 



Comparisons. The present species differs unmistakably from the 

 Gulf species, P. gorgone (Hlibn.) (P. phaon Echv.), although some spec- 

 imens of the latter do approach the darker individuals of P. tharos very 

 closely ; on the upper side of the fore wings, a mesial, pale, almost whit- 

 ish belt is always to be distinguished, and usually separated by a black 

 streak from a submarginal orange fulvous band ; although the two are 

 usually confluent as one irregular patch in P. tharos, some females 

 have them distinctly marked, but always entirely or nearly concolorous : 

 the black outer border of both wings is broader on an average than in the 

 present species, and, in consequence, the submarginal bright colored 

 lunule in the upper median interspace of the fore wings is always entirely 

 enclosed within it. Beneath, the distinctions above alluded to as occurrino- 

 on the upper surface of the fore wings are In-ought out quite as distinctly ; 

 tlie prevailing color of the hind wings is quite different, that of P. gor- 

 gone being of a slightly dirty w^hite, tinged WMth greenish, while the 

 markings, almost an exact repetition of those of P. tharos, are of a black- 

 ish brown. As the Gulf species seems to have a range of variation of 



