PIKRINAK: I'IKRIS OLERACKA. 1195 



ami witliii few white pnpillno, Klviiip; rise to otlior liftirs; basal joint of antciiiiae of tlie 

 color of tlie licail, lieyond pelliiciil, sliglilly iiifiiscatod; ocelli black or green annulated 

 witli black ; niaiullblcs black at tip. 



Hoily deep pea-<:reen, profusely dotted with minute, inco'nspicuous black specks, 

 often surrounded witii darker ?;reen. from oacli of whicli arises a short, delicate hair, 

 whitish on the sides of the l)ody, mixed wliitisli and brownisli on the summit; occa- 

 sionally on the anterior abdoniinal segnients tlierc is an inconspicuous dorsal line free 

 of black dots; and there is also a very faint sti^matal, pale-srcen lim- free of the 

 black dots. Under surface pale sroen, concealed slifjhtly l>y a pale whitish bloom. 

 Tlietlrst thoracic sej^mcnt has a number of white papilliform warts, eacli emitliuj; a 

 moilerately long, forward curving, brownisli hair; the second and tlurd thoracic seg- 

 ments have each a row of hair bearing white papilliform warts, viz.: subdorsal, 

 lateral and suprastigmatal rows, one on tlie anterior edge of each segment; on the abdo- 

 minal segments there are also similar warts on each side, one to a segment : a latero- 

 dorsal placed anteriorly, a lateral placed posteriorly and a laterostigmatal i)laced 

 centrally; they are also abundantly distributed beneath the stigniatal line .and on the 

 terminal segment. Spiracles luteous, edged with blackish brown and narrowly annu- 

 lated witli yellowish. Legs black, the claws reddish. Prolegs delicate pea-green, 

 much like the under surface of the body. Length, 17..') mm. ; breadth, 2..') mm. 



Chrysalis (84: .")7, (!3, 64). I'ea-green, darkest on thora.x, the posterior .abdominal 

 segments paler, the wings and frontal tubercle pale greenish yellow ; or dull brownish 

 green throughout; whole upper surface covered with minute, circular, shallow impres- 

 sions, not crowded together, cither mostly concolorous with the body, p.ale fuscous on 

 the thor.ax and to some degree on the sides of tlie alxlonien , or black throughout ; a round- 

 ish fuscous spot, distinctly limited in front only, is situated on the second .alxlominal 

 segment at the origin of the suprastigmatal ridge, and the fourth to ninth segments 

 are sometimes dashed with brownish fuscous on tlie sides above the supr.astigmatal 

 ridge; the nervures in the outer half of the wings are each m.arked with two or three 

 distant black dots ; sometimes the b.asal tubercle and the lower edge of the wings are 

 streaked with brownish fuscous and an irregular black spot occurs near the tip. An- 

 tennae and legs pale, the base of the former obscured with fuscous, the latter tipped 

 with fuscous; tongue scarcely surpassing the wings; frontal tubercle tapering pretty 

 regularly throughout, curved upward, nearly twice as long as broad, sometimes 

 streaked externally with brownish fuscous, the color extending over the eyes. Dorsal 

 ridge of pronotum fuscous in the middle; of mesonotum dull yellowish, fuscous iu 

 the middle, the highest point of the ridge more elevated than inrap.ae; of metathorax 

 blackish fuscous ; or sometimes the ridge is of the color of the body and only tinged 

 slightly on the highest parts with yellowish brown ; median carina of abdomen pale ; 

 lateral ridge of thorax obscured with fuscous ; suprastigmatal ridge of abdomen yel- 

 lowish fuscous, interrupted with fuscous on the second and third segments ; beyond, 

 pale; the raised portions of the second and third segments well rounded. Abdomen 

 beneath dotted with larger and smaller black dots, the former arranged in longitudinal 

 rows; spiracles with pale lips; whole cremaster pale; booklets pale testaceous. 

 Length 19. .5 mm. ; of frontal tubercle, 1.6 mm. ; width at mesothorax, 4 mm. ; at third 

 abdominal segment, .imm. ; height of thoracic tubercle, 1.3 mm. ; of mesothorax,:'! mm. 



Comparison ■with allies. As this butterfly has been regarded as iden- 

 tical w itli P. iiajii of lOiiruiie by some who have studied only the markings 

 of the wings, I liave thought a comparison based on the early stages, some 

 of them drawn from structural features, which look in quite the opposite 

 direction, would be sufficient waiTant for my retention of a distinction 

 long held. 



The mature caterpillar of P. oleracea differs from that of P. napi of Europe 

 in the more uniform pile with which the body is clothed, and by the apparent 



