92 JOURNAL OF THE 



No. IX. 



OBSERVATIONS ON THP] FEMALE FOKM OF 

 FHENGODES LATICOLLIS HORN. 



[See plate at back of Journal]. 



GEORGE F. ATKINSON. 



Entomologists will remember the interest taken, about one 

 year ago, in the discovery that the female form of a Lampyrid* 

 (Zarhijns rwersi) was larva-like, and liiat the three stages — larva, 

 pupa, and adult — differed but little. On the night of September 

 27, 1886, a larviform, luminous beetle was collected on one of 

 the walks of the campus of the University of North Carolina. 



Pupa State. — As the insect cast its skin only once — in the 

 spring of 1887 — after coming into my possession, this must rep- 

 resent its pupa state. 



Description. — Length when crawling, two and three-fourths 

 inches; width, three-eighths inch. Flattened, larviform, lumi- 

 nous ; composed of twelve segments (exclusive of the head), taper- 

 ins: gentlv behind, and more decidedly on the three anterior seg- 

 ments. Chitinous plates on dorsum blackish-brown, the second to 

 eleventh inclusive with a pair of large, light-brown, oval spots. 

 Anal plate light-brown, except a median band of blackish-brown, 

 convex behind. First plate light-brown, except a median irregu- 

 lar and two lateral blackish-brown spots. Below each stigmata, 

 on the fourth to eleventh segments inclusive, are two longitudinal 

 folds, the anterior half of each fold blackish-brown, shading into 

 light-brown in the middle, and becoming yellowish-white, with 

 an olive tinge on the posterior half. Posterior edge of each dor- 

 sal plate dark olive-brown; the posterior angles of the pro-, 

 meso-, and meta-thoracic plate and the anterior third of the pro- 

 thoracic plate yellowish-white, tinged with olive. On the fifth 



*Ara. Nat., xx, 64S. See also, Eut. Am., iii, 203. 



