•250 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Larva. — '' Length, wlieii at rest, 1.2.") inches (in shape tapering slightly from the middle 

 forward, but more rai)idly from that point backward, the body deeper than broad). General 

 color bright, clear green, a little spotted with white, marked as follows: Head gray, a little lighter 

 through the center. Joint 1 contains two dark purplish black warts on the dorsum, reddish purple 

 at the base, the space between them whitish. From these runs backward a bright, brownish 

 purple line, not very dark, at first about one-sixteenth of an inch wide. This expands, reaching 

 the subdorsum in the posterior part of joint 4, dividing in the middle in joint 3. The line runs 

 along the subdorsal region to the posterior part of joiiit 6, where they unite and cover the whole 

 of the dorsal part of joint 7 and all but a little of the posterior part of joint 8, when it again 

 separates and runs as two lines to the posterior part ot joint 9. The space on the back of joints 

 3, 4, 5, and G between the purple lines is filled with orange. On joint 4 a spur is given oft" from 

 the purple line to the third thoracic leg, another runs from joint 6 to the first pro-leg, another 

 short spur on joint 9; both of the last with oblirpie lines of lighter shade. On joint 9 the orange 

 is outside the purple, extending down the lateral spurs. Joint 10 has no purple nor orange, except 

 a little below the stigmata, but it has Mnt yellow subdorsal lines. Joint 11 has purple subdorsal 

 lines which unite on the anterior part of joint 12, continuing backward as a broad dorsal line, 

 darkest on the anal i>late. The space on joint 11 between the subdorsals is filled with orange. 

 Feet and legs purple, but the rest of the underside green ; under the glass the above-described 

 brownish purple lines are not uniform, but mottled with irregular lighter lines." (French). 



From the above description it will be seen that the two prothoracic warts are retained 

 throughout larval life, this, as Dr. Dyar has remarked to us, being the only species in the genus 

 iu which these tubercles are retained after the last molt. This fact shows that piilrerea is the 

 most primitive species of the genus, but until we discover the first stage of astarte it will be 

 premature to construct a genealogical tree of the genus. 



It is evident from the larval characters that this species should be placed below II. (juttivltta 

 and H. ohliqua and astarte, while the moth is near R. ohliqua, with no near aftinity to //. f/iittivitta 

 and biiimlata. As it is the only species known to us with the tubercles retained in the last 

 stage, it is most probably the species which Doubleday has figured under the name H. athereo. 



Habits. — All that is known with certainty is stated by Professor French as follows: 



Tho single larva from which the above description was taken was found .June 30 on the body of a white oak 

 tree. Daring the few days before it pulsated I fed it on the leaves of Quercus aUm. and Q. coccinea, both of which 

 it ate readily. July 6 it entered the dirt of the cage to transform, and produced the imago August 6. 



In a volume (Gray's copy) of Abbot's manuscript drawings (fig. 117) is a fine colored sketch of 

 H. pulverea. It has well marked prothoracic tubercles, and is drawn in different attitudes as 

 feeding on Styrax imlverulentwn. (For stages I-V see Appendix A, p. 283.) 



Geographical distribnfioii. — Thus far it has not been met with beyond the limits of the 

 Appalachian and Austroriparian subprovinces. 



Seekonk, R. I. (Mrs. S. W. Bridgham); Lonsdale, R. I. (Dearden) ; Pennsylvania (Grote and 

 Rob.); New York (Grote, Hulst, Neumoegen); Carbondale, 111. (French); 3 and ? , Punta Gorda, 

 Charlotte Harbor, Fla. (Mrs. Slosson); Georgia, (Abbot). 



Heterocampa belfragei (.Grote). 



(PI. y, fig. 15 <?.) 



Bclerocampa helfragei Grote, Can. Ent., xi, p. 200, Nov., 1879; New Check List N. Amer. Moths, p. 19, 1882. 

 Litodouta hclfragti .Smith, List Lep. Bor. Amer.. p. 31, 1892. 

 Hetei-acanipa helfi-agvi Kirby, Syn. Cat. Leji. Het., i, p. .565, 1892. 



Nenm. and Dyar, Trans. Amer. Ent. Soc, xxi, p. 206, 1894; .louru. N. Y. Ent. Soc, ii, 

 p. 117, Sept., 1894. 



Moth. — One $ . This is a true Heterocampa and near H. pulrerea, and should not be included 

 ill the subgenus Litodonta, although the nature of the female antenna' is not known; it dift'ers 

 from H. litjttromdi in the outer edge of the fore wings being very obliiiuc. Thorax ash-gray; 

 collar with two transver.se black lines; teguh^ edged with black. Abroad black transverse tuft 

 on the basal segment of the abdomen. 



