July, 1901] 



PSYCHE. 



227 



width \.z mm. Body moderately slender, 

 smooth, subventral fold prominent. Whitish 

 green, dorsum with tour narrow white lines ; 

 lateral band blackish, geminate, reaching 

 joints 2 and 13, but not continued on the 

 anal foot; subventral fold yellowish white, 

 two white lines in the subventral space. 

 \'entral bami blackish lirown, composed of 

 four fine lines united by a shading. Thoracic 

 feet brown dotted; abdominal foot of joint 

 ID lined before and behind, that of 13 with 

 triangular plate produced above into a prong. 

 Anal plate triangular, pointed. Spiracles 

 black ringed, that of joint 2 the largest. 

 Tubercles small, ii slightly larger, blackish. 

 Setae short, stiff, dusky. 



Stage V. Head as before, faintly longi- 

 tudinally streaked with while; lateial band 

 mottled, red-brown, edged with white behind ; 

 width 1.9 mm. Body elongate, uniformly 

 yellowish opaque green, shading to whitish 

 green on joints 2 and 13 ; a faint, more trans- 

 parent and darker vascular dorsal line show- 

 ing especially as V-marks between tubercles 

 ii, the point on the posterior edge of the 

 segment. A slightly more opaque subdorsal 

 line below tubercle ii; lateral band reddish 

 brown, obscurely triplicate, nearly obsolete 

 except at the ends, where, especially on joints 

 10 to 13, it forms a broad diffuse shade; 

 ventral band separated into four lines and 

 obscure except on the thorax between the 

 feet, red-brown. Spiracles white, black 

 edged except on the bottom. Thoracic feet 

 appressed, green, brown dotted. Foot of 

 joint 10 brown bordered. Subventral fold 

 lighter, white posteriorly, running narrowly 

 on the lower part of anal foot. Anal prongs 

 exceeding the triangular plate. There is 



occasionally a brown form of the larva 

 which is similar but head and all shaded 

 with vinous brown, darkest in the dorsal 

 \'-marks, subdorsal line and ventral region, 

 the pale band on subventral fold contrasted. 



Cocooti. Leaves spun tfjgether and united 

 by a moderate amount of whitish silk. 



Pupa. Bright green, somewhat transpa?'- 

 ent, the abdomen with a whitish green depos- 

 it beneath, leaving a dark green vascular 

 dorsal line. Spiracles, eyes and a small 

 semicircular raised disk on each side of the 

 prothorax behind lilack. End segment and 

 cremaster also black, the latter a thick cone, 

 densely punctured with a group of recurved 

 hooks at the tip. The last segment is sharply 

 wider than the cremaster and its upper edge 

 is roundcdiy serrate. Surface smooth and 

 shining. 



Food plants v.arious. These larvae fed on 

 several species of Polygonum. Double 

 brooded, the second brood hibernating in 

 about the penultimate stage (Ent. News, V, 

 62) and probably having more than five 

 stages as here recorded for the Spring brood. 

 Larvae from Washington, D. C. 



HEMirT(-:R,\ ON VERB.\scuM — Itisalwavs 

 interesting to examine introduced plants, and 

 see what native insects have succeeded in 

 utilizing them for food or shelter. Last July 

 at Las Vegas Hot Springs, N. M., I found 

 the European I'lrbascum tliti piu% glowing 

 plenf ifullv, and three species of Hemiptera 

 very much at home upon it. These latter 

 have been submitted to Mr. E. D. Ball, who 

 identifies them as T/iyaiila lustator Fabr., 

 Neide^ mifticit^ Sav. and L.ygiii priffetisis L. 

 T. D. A. Cocker ell. 



