114 MEMOIIIS OF THE NATIONAL ACADEMY OF SCIENCES. 



almost coucolorous with ])riiuaries. The discal dots are large aud distiuct, exactly as in 1). di-exelH. 

 Otherwise tlie moth is the same as its allies. 



Expanse of wings, 47-(l() miu. 



From D. drcxeUi it ditters in the absence of the bright costal shade, the more iiuiform coloration ; 

 from />. miiiistid. as already pointed out under tliat species. With the other species it could 

 scarcely be confounded. (Dyar.) 



J-Jf/j/. — Of nearly the same size aud shape as in that of J>. ih-e.rrlii, Imt considerably smaller 

 than that of I>. pnhnil. Differs from that of 7>. drciclii in the ujijicr end with the )uicroi)yle being 

 somewhat depressed. It is round, barrel shaped, the shell iiorcelain white. The microi)yle is 

 somewhat larger than that of />. (Ire.relii. Described lioni li\ ing specimens received from Miss 

 C. G. Sonic. 



lAirni. — 1 have iu)t seen the larva alive. The exiellent figures kindly loaned me by 3Iiss 

 ^lorton well represent this species, which is readily recognized by its checkered appearance. 



The following description of the eggs and larval stages has been kindly sent me by Dr. Dyar: 



Egy. — Laid in patches of 91), 9.1, lOli, on underside of leaf of the food plant, Andromeda 

 lif/u.striii(i. Cylindricopyriform, being of less diameter just below the summit, flattened at base 

 and vertex. Uniform white, with a rather large central black spot at vertex. Diameter, 1.1 mm.; 

 height, 0.7 mm. 



Larva, first vjatje. — Uead round, shining black; width, 0..j mm.; cervical shield, anal plate, 

 thoracic and anal leet, and leg-plates black. Body wine red, a broad sulidorsal and lateral yellow 

 band, each containing a narrow red line. No lines on venter. Hairs, several from a wart, the 

 warts minute, dark brown; no secondaiy hairs. 



Second tiliii/c. — Head shining black or with a slight brownish tint, rounded, rather higher than 

 wide; width, 1.1 mm. Body dark wine red, the bands as before, greenish yellow; venter with a 

 iiarrow central pale yellow line. Later the bands become almost white. Besitles the hairs from 

 the warts, short, tine, secondary hairs are present on the skin. 



Third stage. — Head higher than wide, narrowing toward apex, the sutures depressed. Color 

 red-brown, the ocelli and mouth black; width, 1.6 in. Cervical shield black or jjartly orange; feet 

 aud anal plate shining black. Body blackish brown, the stripes at tirst as before, but later they 

 appear as four very broad, lateral, clear white (or bright yellow) bands, with slight traces of the 

 ventral lines. In a few the pedal line is tolerably distinct, but narrow. Bases of the legs and 

 corresponding spots on legless segments dark wine-red. Hairs not abundant, pale, the secondary 

 ones very short. 



Fourth stage. — Head as before; width, 3.1 mm. Body black, the side stri])es much broader 

 than the intervening spaces, continuous, clear white (or yellow). The ventral strijies (two pedal 

 and medio- ventral ) ai'e represented by a few linear dots or are absent. Cervical shield light brown ; 

 anal plate black or partly brown. Thoracic, anal feet, and leg i)lates black, the bases of the feet 

 red, as before. The stripes are not confluent at either extrenuty. 



Fifth stage. — Head rounded, as high as wide, shagreened, shining; color, orange-brown or 

 light mahogany-red; width, 5..'! mm. Cervical shield, anal plate, bases of legs, and corresponding 

 spots on legless segments nuihogany-red. Anal and thoracic feet blackish. Body black, the 

 ventral lines as before, but the lateral are broken by the black ground color into a series of 

 sub(|uadrate sjjots, as follows: The two upper lines are broken in all the segmental incisures and 

 broadly through the center of the segment; the third (lateral) is broken in the same manner, but 

 less broadly in the center of the segment, while the fourth (substigmatal) Is not broken in the 

 incisure nor center of the segment, but once before the spiracle and again toward the posterior 

 edge of the segment. The spottings are partially obsolete at the extremities. Primary hairs 

 arising from the wart-areas long, white; secondary ones very short, black. There are two forms 

 of this hirva in which the spots are pure white or bright yellow, respectively. 



Larva' from Dutchess and Ulster counties, N. Y. (Dyar.) 



Pupa.— $ and 9. Head rather prominent, roughly corrugated, with the three frontal ridges 

 moderately well umrked ; the head is broader and the ridges less marked than in D. perspicua. 

 Thorax and body coarsely punctured, but not so mu(;h so as in />. pcrspicua. The body is less dull,. 



