74 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Ptipa. — (PI. LVI, fig.s. 3,4.) According to Jewett the pupa is at first bright green, but changes 

 to jet black in a few hours. Body nearly cylindrical, the anterior extremity being nearly 

 hemispherical and the posterior extremity tapering rapidly in the last two segments to a blunt 

 -j3oint. which is extended into a bipronged spine three-sixteenths of an inch long. '"The sur- 

 face of the hemispherical portion is studded with minute, sharp, triangular points. Wing cases 

 small, covering only the sides and under surface of the anterior one-third of the pupa. Four of 

 the abdominal segments are separated by a broad, deep sulcus; the anterior and posterior margins 

 of these segments are armed with a row of minute, sharp spines."' Length. 24 mm. Without 

 examples of the pup;e of other species it is impossible to correctly define those of the present 

 species. 



The eggs (in Ohio) were deposited May 26 and hatched May 31 (Jewett). 



J^ood plants. — Spiny locust {Gleditschia triacunthos); Kentucky coffee tree {Gijumot-htdus 

 c<inadeti«ix). 



Ilahitx. — The larva' in Ohio began to stop feeding June '2^K enteiing the ground within a 

 few hours after ceasing to eat. "• There they pupated within an oval cell lined with a thin cocoon 

 of silk, the first casting its skin on the 24th . . . Imagines began to appear on July 3, and had 

 nearly all emerged by July 10. The iarvse pupate readily on the bottom of the l)reeding cage if 

 ground is not furnished them. In this case they build no cocoon." 



'• The insect is 3-l)rooded here, hibernating in pupa. Although the large majority of each 

 brood follows the cycle of development as described, yet a few of each brood are much slower in 

 making their changes. Thus a few of the brood did not complete their growth till the end of 

 Jul V, and three pupa» formed June 26 are still alive (February 28), having hibernated. Other 

 pupa? of the same brood disclosed their imagines at various periods during July and August. 

 This accounts for the fact that larvw in all stages of development may be found at any time 

 throughout the summer till frost kills their food plants, which are (rlcdlUchia trlacdnthvs L. 

 (honev locust or three-horned acacia) and Gymnodadus canadensis Li^m. (Kentuck\- coffee tree)." 



Walsh, referring to the fact that he never saw the larva of Anisota senatorta assume a 

 sphingid attitude, states that that of A. hicolor invariably assumes this attitude in repose, ''clasp- 

 ing at the same time the under surface of the main rib of the honey-locust leaf with its prolegs, 

 so as to be overshadowed and concealed by the leaflets" (1. c.. p. 21*4). 



Siuimian/ of the life /listori/.— The larva hatching May 31 lived four days before the tirst 

 moult, which occurred June 4. The duration of stage II is four days; of stage III, live days; of 

 stage IV, four days, and of stage V, and last, three days. Entering the earth to pupate, it 

 i-cmained in this state from twelve to thirteen days, the moths appearing from July 8 to 10. In 

 soiitiicrn Ohio it is 3-brooded and hibernates as a pupa. 



^DKLOC'EPHj^Lj^ QT/^VI}RILi:N^p:A.'r^ Grote and Robinson. 



Aiklocifihata quadrilimaUi (Jkote and KiiniNSdX, Tran^^. Aiiier. Eiit. Soc, I. ].. 11, I'l. 1, tifr. 2.— Drcce, Biol. 

 Centr. Anier., Lep. IU4., I p. 171, .Tniif. ISSti; II, p. 414, Mar., Is'.iT, 



This rare species is very closely allied in the shape of the wings and markings to .1. hicuhu; 

 but dirtVrs, according to Grote and Robinson, in the simple antenna' and in the distinct lines of 

 the upper surface of the fore wings. 



Geogmjihical disfrilmtion.—,la.]n\yd, Coatepec, Orizaba. Mexico; city of Guatemala, Cande- 

 iaria Mountains, Costa Rica (Druce). Dyar's List records it from the Mississippi Valley. 



PiijM.—R. Edwards .states that in shape it is very like that of Ani.sota, but a little longer in 

 comparison. It is pitchy black throughout. The entire surface very rough, and covered with 

 minutt' rai.sed spine's. The two rows of teeth on five last abdominal segments well marked. On 

 top of the head, first segment behind the head case, are two raised, siiining. large, black tul)ercles. 

 The cremaster is very long, bifurcate, and extremely rough. Length, including the cremaster, 

 54 mm.; width, 10 mm. (Ent. Amer.. IV, p. 62). 



