THE CANADIAN ENTOMOLOGIST. 190 



brownish. Front much narrower, about one-twelfth width of head, 

 parallel portion fully five times as long as wide, just perceptibly 

 narrowed anteriorly, with a callus swollen-conical or rounded posteriorly, 

 prolonged into a second elongate spindle-shaped callus. Third antennal 

 joint clearer reddish, annulate portion not so black ; process more 

 developed, ending in a sharp-pointed angle, basal part of joint rather 

 widened and shortened ; annulate portion short and comparatively stout, 

 pointed elongate conical, hardly three times as long as basal width in 

 two of the specimens, slightly longer and comparatively less stout in the 

 other. Thorax saturate yellowish-brown, with four indistinct whitish 

 lines, the middle ones sometimes obsolete. Scutellum concolorous with 

 thorax. Median whitish vitta of abdomen formed of whitish pubes- 

 cence in triangles, under which the ground colour is seen to be paler 

 than the brownish-yellow of rest of abdomen. Pale brownish vitta on 

 each side of median one is composed of coalescent oblique markings* 

 like a vitta broken at the incisures, the marking on each segment 

 directed posteriorly outward. A nearly similar, hardly less broken 

 lateral whitish vitta outside of this on each side ; the last is bounded by 

 a broken brown vitta on edge of abdomen, serrate on inner edge. 

 Fourth to seventh, especially fifth to seventh segments, more deeply 

 tinged with brown, or quite dark brown in ground colour. White 

 incisures on sides of abdomen. White vittae and incisures white-hairy, 

 brownish vittse black-hairy. Front femora quite brownish, hind meta- 

 tarsi well tinged with brown, front tarsi almost black. Wings uniformly 

 clear, except the pale yellowish oblique elongate stigma. Otherwise as 

 in campechiajius, including the venation, bare eyes, and absence of 

 ocelli. 



A NEW METHOD OF STUDYING NEURATION. 



BY HENRY SKINNER, PROF. ENT. ACAD. NAT. SCI., PHILADELPHIA, PA. 



The opprobrium cast on the lepidopterist has been that he did not 

 -study the anatomy of his specimens, but depended too much on macu- 

 lation and colour. There has been much truth in the reproach, as there 

 -are few of us who would destroy a rare or unique specimen to examine 

 the neuration. Fortunately the time has arrived when the neuration can 

 be studied with the greatest ease and accuracy, and permanently re- 

 recorded in a photograph, or, more strictly speaking, a radiograph. The 

 anatomy of a living chrysalis may be studied without removing the 



