1330 THE BUTTERFLIES OF NEW ENGLAND. 



very close, snbcircular cluster, of which the two upper front ones are attingent, the 

 others separated by their own width, the sixth below and behind the others, above the 

 base of the antennae. Third joint of antennae cylindrical, more than three times as 

 long as broad. 



Body large and corpulent, choerocampoid, being inflated above in front in a single 

 mass, which includes the second and third thoracic and first and the front part of the 

 second abdominal segments, affecting equally the dorsal and lateral outlines of the 

 body but not the inferior; beyond these segments the body is cylindrical, submonili- 

 fonn, the fifth abdominal segment obscurely hunched. Just outside and behind the 

 osmaterial cleft the first thoracic segment is squarely angled, the only remaining sign 

 of the prominent fleshy tubercles of the juvenile caterpillar. Behind this are found, 

 dorsally, series of lenticles, distinct, usually hemispherical, and always glistening in 

 the penultimate stage, scarcely elevated and wholly dull in the last stage, situated as 

 follows: on the second thoracic segment a transverse, median, straight series of sLx 

 equidistant lenticles, growing larger outwardly ; on the third thoracic and first abdomi- 

 nal segments a sinuate series of six on the anterior half of the segments, the curve 

 opening posteriorly, equal and equidistant on the third thoracic segment excepting 

 that the middle pair are approximated, unequal and ineciuidistant on the first abdomi- 

 nal segment, the outermost being more distant and smaller than the others, situated just 

 above the spiracle. Behind these somewhat irregular and generally larger ones, there is 

 on the abdominal segments a laterodorsal anterior series of much smaller ones on the 

 second, third and fifth to seventh segments, and a supralateral central series on the 

 second, fifth and sixth segments, larger than the last. Many of these are with diffi- 

 culty seen in the mature caterpillar. The spiracles are ranged along a line scarcely 

 below the middle of the sides. 



Chrysalis. As seen from a side view fusiform, the dorsal line except for the meso- 

 notal elevation nearly straight, the ventral bent at the swollen and rounded middle at 

 an angle of about 135° ; the mesonotal elevation considerable and abrupt, its front 

 perpendicular to the general dorsal line, behind it falling ofl" to the abdomen with 

 a scarcely arched slope; separation of the thorax and abdomen faint. Viewed from 

 above appearing as if formed of three masses, the anterior two quadrate, the posterior 

 fusiform ; the first is made up of the head and prothorax, with the forward reaching, 

 ear-like ocellar prominences; the second of the abruptly expanded thoracic mass, more 

 than half as broad again as the part in front, anteriorly rectangular, scarcely narrow- 

 ing behind; the fusiform third part of the abdomen, broadest at the hinder end of the 

 third segment, in front and behind which it slopes about equally. Front of head flat, 

 together with the same face of the ocellar prominences, which are bent from the front 

 at an excessively large angle; the prominences triquetral, as long as the prothorax 

 one face outward, the arched superior ridge roundly and rather deeply emargi- 

 nate at the base, the inferior ridge gently arcuate, the interior thrice stepped, the 

 middle step twice the length of the others. Mesonotal tubercle triquetral, stout, the 

 superior face more or less hollowed, the ridges corrugated. Basal wing tubercle low, 

 broad and irregularly triquetral, the small supernumerary tubercle at the lower end of 

 its posterior ridge. Body a little pinched at the upper posterior angle of the wing- 

 cases ; a laterodorsal series of small granulate tubercles just behind the middle of the 

 abdominal segments ; surface scabrous and punctate. Cremaster tetraquetral, twice 

 as broad below as above, all the sides hollowed but especially and broadly above and 

 below, apically truncate, the field of booklets transverse, the booklets thickly crowded, 

 rather long, not very slender, apically expanding laterally, recurved and apparently 

 chisel edged. 



This genus is composed of half a dozen species or more, confined to the 

 American continent but ranging therein over mainland and island to ten 

 degrees at least on either side of the tropics, and on both sides of the Cor- 



