MEMOIRS OF I'llK NATIONAL ACAI)E?»IY OF SCIENCES. 147 



'"''Young larva. — Lono;tli. 11 iimi. Ilcml l;iii;'('. I'nif hrick-nHJ. Bddy ])alc yrccii. tul)Ci'<lcs 

 stniw-yollow, o-reen :it Iniso. Tlit' dorsal tul)Oirles all nearly tiic same size, cxci-pt the prothoi'acic 

 ones, wliicli arc nearly one-hair as lai'ge u.s the iiiesollioracic: those i)n mesotlionieic. iii(>ta- 

 thoracie. and lirst alidoniinal segments of equal size and oidy a little larger tiiaii those on the 

 other abdominal segments, Eightii pair of abdominal ones larger than the others and nearly as 

 large as the thoraeie ones. The long, slender spines on the thoracic segments black, those on 

 the alidoininal in part lilaek, t'spccially the inner ones. 



■■ Lan-'t. jmihiihh/ l>, fere tlw hi^t indlt. — Head full, rounded, retractile in the jjrothorax, 

 nearly concolorous with the body, being corneous. Body unifornily horn-brown, the color of 

 old dark parciunent. witii no green shade about it. On eat'h thoracic segment a long, slender 

 warted sul)tlorsal spine, the prothoracic pair projecting a little in front and smaller and one-third 

 shorter than the other four, which are recurved. The six long thoracic spines are succeeded by 

 a dorsal row of short stout smooth acute spines with a dull orange-red tint. Each spine has two 

 or three small slender dark spinules and about three terminal unecjual spinules. On the side of 

 each thoracic segment are two short conical tubercles with a few stitl' s{)inuU's. On the alidomen 

 above the spiracles is a row of dull orange-reddish smooth spines, and below a row of nuich 

 slenderer spines, which are spinulated much like the dorsal thoracic ones. These spines are 

 situated on the folds of the lateral ridge of the body. Below this sul)spiracular row of spines is 

 asubventval row of small spines on the three thoracic segments, and which are large and long on 

 the first and second abdominal segments and on the last three segments. On the middle of the 

 eighth segment is a large straight dorsal stiti' spine nearly as large as the larger thoracic ones. 

 At its base behind are two minute spines. On the segment behind (ninth) is a median stout 

 spine, making the middle one of a transverse row of seven spines on that segment. Supraanal 

 plate tlat, obtuse, variously and ol)tusely tuberculated, especially around the edges, as are the 

 sides of the large anal legs and the sides of the prolegs, which are very retractile. The spiracles 

 are large, black, and very conspicuous, the last pair larger than the others. There are also 

 scattered smoky-black blotches, a row on the front edge of each segment and one at the base of 

 the dorsal spines. Length, 5u mm. (2 inches). The larva of ■sej^ulcndia (of which Professor 

 Riley has blown larva? of four stages) differs from that of C regaJija in the stage before the last 

 molt in having only si.x spines on the anterior end and two pairs of straight spines on the end, 

 those on the prothoracic segment longer in proportion than in C. ivgalis, and all ending in 

 bulbous enlargements. In the mature larva all the spines are shorter and the spinules have 

 shorter spines. Length lOU mm. (4 inches).'' (Rep. Forest Insects, p. 772.) 



The tubercles ii are present in the fully grown larva on abdominal segment 8, and each 

 bears two short fine seta?. 



(Tvvgraphlcal distrihufion. — From southern Maine and New Hampshire to Georgia and 

 Florida. Brunswick, Me. (Packard); Manchester, N. H. (F. H. Foster); Lawrence, Mass. (J. O. 

 Treat); Lonsdale, R. I., June 20 (Dearden); Providence, end of June (G. Gray); New York City 

 (Edwards, Grote); Pennsjdvania; Georgia (Abbot); Jacksonville, Fla. (Mrs. Slosson). (See 

 Map IX.) 



