168 MEMOIKS OF THE ^'AT10XAL ACADEMY OF SGIENCEIS. 



LARVA OF PSEUDOTHYATIRA CYJIATOPUOKOIDES (JROTE. 

 (PI. XIX, fi^'. 5, on, ob.) 



This beautifal aiul interesting' lavva was detected on the yeUow birch at Brunswick, Me.,. 

 Angnst 14:. It was dark horn-brown, the tail iii>turned, and the body wlieu disturbed twisted into 

 a partial spiral. The next day it molted. I had supposed it might be a Notodontian, but Dr. Dyar 

 on reading my description thinks it is almost surely a Noctuid, and that it has been described by 

 R. Thaxter. The following description was made two days after it had molted and before the body 

 had tilled out, as it tapered slightly to the end: 



tStcifie III?. — Length, 8-9 mm. The head is large and broad, somewhat rounded, but seen 

 from iu front somewhat square, being about as broad as long; it is much wider than the body, the 

 latter not yet being tilled out; it is pale, raw sienna brown, witli dense reddish brown spots 

 arranged in two broad diffuse median and two broad diffuse longitudiual bands; it is slightly 

 bilobed and much rounded on the vertex, not angular, and with no tubercles. The segments of 

 the body are transversely wrinkled. The body above is of a peculiar dark sea-green hue, and 

 below this runs into a d;irk umber brown. The first thoracic segment has no tubercles or marks, 

 but is dark brown on the sides and on the back, with irregular scattered pale spots. On the 

 second thoracic segment is a prominent transverse ridge, with a small tubercle at each end; it is 

 dark on the anterior slope, but on the summit and on the posterior slope whitish ash. This pale 

 area extends bai'k to the first abdominal segment, but does not include it, though it passes down 

 to the side of that segment and extends backward, forming a lateral diffuse, rather irregular 

 spiracular baud, from which a pair of obli(pie pale stripes extend upward upon the back, not (juite 

 reaching the fine median blackish line; posteriorly it forms the pale edge of the suranal plate. 

 A decided dorsal hump on the eighth abdominal segment, which is dark velvety umber-brown 

 with the hinder edge below whitish. The end of the body is decidedly elevated, and the dark 

 anal legs are as large as the middle set of abdominal legs, which are llesli colored. The thoracic 

 legs are dark green, concolorous with the thoracic segment. 



Ellida Grote. 

 (PI. XLII, lig. 4. venation.) 



EllUUi iWoxe, Can. Kiit.. viii, p. 12.5, July, 1876. 

 Ciiniidiipkora Walk., Cat. Leii. Het. Br. Mils., ix. p. 18, 185(5. 

 Ellida Kirby, Syn. Cat. Lep. Het., i, p. 597, 1892. 



Xeuui. ami Dyar, Trau.s. Amer. Eut. Soc, xxi, p. 187, .June, 1894: .Tonru. N. Y. Eat. Soc., ii,p. 208, 

 Sept., 1894. 



Moth, — Ilead much as in iSTotodonta; the front shaggy, moderately wide; the hairs abundant;, 

 eyes naked. The male antenu;^ broadly pectinated; "female antenuii; more shortly and finely 

 bipectinate" (Grote). The palpi much as in Notodonta, being short and broad, the third joint 

 short and conical, but distinct, and reaching slightly beyond the front. The thorax is smooth,, 

 not tufted. 



Fore wings not broad, the costa regularly convex; the apex not produced and rounded as iu 

 jSiotodonta, but moderately acute; outer edge short; inner edge simple, not tufted. Venation 

 much as iu L. hasitriens, there being no subcostal cell. The costal region is rather wide; 

 six subco-stal branches, the second very short; the sixth arises nearer tlie discal vein than in 

 L. basitriens. The arrangement of the discal veins is much as in L. hasifricns, their course being- 

 nearly straight. Hind wings somewhat pointed toward the apex. The subcostal does not fork so 

 far out near the outer edge of the wing as iu Xotodouta, while the two discal veins taken together 

 make a regular curved line. 



The abdomen is smooth, not tufted at the end, but conical. Legs moderately stout, pilose; 

 a pair of discal spurs on the hind tiljia- not projecting far beyond the hairs. 



Coloration somewhat as in Schizura leptinoides, reminding one at first of that species; fore 

 wings ash-gray, with transverse lines, but the venules only slightly marked with dark spots and 

 streaks. A distinct curvdinear discal spot and just within it three short parallel distinct brown 

 lines, which are most distinct iu the median space. Hind wings ashbrown. Collar dark. 



