134 ENTOMOLOGICAL NEWS [May, '22 



msect hibernates as a full-grown larva. Emergence of the 

 moths took place from June 15 to July 3. It is now possible 

 to publish illustrations of this insect, and some additional 

 descriptive matter : 



Larval case. Length usually from 60 to 70 mm., but occasionally 

 exceeding 100 mm. ; diameter at widest part about 10 mm. For pupation 

 usually suspended from a twig by a strong encircling band of silk, 

 below which the case widens abruptly, thence of almost uniform diam- 

 eter for about two-fifths of its length, then tapers to the lower extrem- 

 ity. It is composed of tough grayish-white silk, of which usually a 

 considerable portion is bare of attached material; this mav consist of 

 bits of slender sticks or of leaf -stems, applied longitud.nally, or of 

 dry leaf-fragments, or of both of these materials in indiscriminate 

 mixture. 



Last stage lan'ae. Length 40-60 mm. ; width of head 3.9 mm. Dull 

 brown; the head and the chitinized areas of the thoracic segments, less 

 conspicuously the setal plates of the abdominal segments, almost white. 

 The head and the thoracic shields bear foliated markings of dark 

 brown, and most of the setae of the head and thorax arise from dark- 

 brown dots. The markings of the head are asymmetrical, though not 

 always to the extent illustrated. A line drawn from the 2nd adfrontals 

 through the bases of the frontal setae also touches the upper margin of 

 the frontal punctures. 



Pupa of $ . Length 21 mm. ; chestnut brown, the head, thorax and 

 wings lighter than the abdomen, which is more conspicuously and 

 striatel;- rugose, especially its dorsal portions. The front terminates 

 in a sharp median ridge with flattened lateral expansions along the 

 epicranial suture. The mesothoracic wings only slightly overlap the 

 third abdominal segment ventrally. The antennae are broad and short, 

 their apices reaching a point midway from the frontal crest to the caudal 

 margin of the wings ; the prothoracic and mesothoracic legs reach points 

 respectively two-thirds and three-quarters the distance from the crest 

 to the margin of the wings. The caudal segments are curved ventrad, 

 and the caudal hooks are heavily chitinized, almost black, and bear 

 single thorns. A dorso-cephalic spined ridge, its strong teeth directed 

 c; ndad, occurs on each of abdominal segments 3, 4, 5, 6, 7 and 8; and a 

 durso-caudal row of fine bent spines, their points directed cephalad, on 

 each of segments 2, 3, 4 and 5. The abdominal spiracles are produced 

 beyond the surface of the body. 



Adult 9 . Length 24-30 mm. Of the usual form, more nearly resem- 

 bling the 9 of abboti, rather than that of ephemerae formis. The crest- 

 likt- medio-dorsal ridge of the thoracic segments is high and sharp, and 

 caudally the body is truncated rather abruptly. The abdominal ring of 

 downy hairs is less abundant in quantity, paler in color, and less evenly 

 distributed than in abboti. 



