1396 THE BUTTERFLIES OF NEW ENGLAND. 



middle of the entire segment or in case of tlie first segment in tlie middle of tlie 

 dorsal shield ; tliere is a similar laterostigmatal series in the same position on all the 

 segments both thoracic and abdominal; a stigmatal series just in advance of the stig- 

 mata or the position where they would be, on the thoracic segments; an infrastigmatal 

 series larger than the others placed a little in advance of the spiracles on the abdominal 

 segments, the crater of each annulus being occupied by a thin pellicle presenting the 

 appearance of a glistening drum ; a ventrostigmatal series on the abdominal segments 

 a little behind the spiracles ; these last two series are represented on the first thoracic 

 segment by a pair of similar subconfinent annuli midway between the spiracle and the 

 base of the leg ; all of these craterif orm annuli are more readily seen in the caterpillar 

 of the fourth stage than in the mature form. Sternal gland of the first thoracic seg- 

 ment with a transverse slit between the lips of which may be thrust a coral-red mammilate 

 process thickly studded with conical hyaline projections on either side of a transverse 

 snlcation. Legs with a basal fleshy portion, stout; the other parts small, tapering, 

 appressed; the claws very fine, strongly heeled, sharply pointed; prolegs large at base, 

 rapidly tapering, blunt at tip, with a reniform circlet of numerous outward curving hooks 

 in a triple row, the hooks strongly arcuate, gently tapering, rather bluntly pointed. 

 Described from blown specimens. 



Chrysalis. Very stout ; head and prothorax forming together a scarcely perceptible 

 sub-rectangular mass as viewed from above, the front angulato-arcuate, the lateral 

 angles rounded ; the median third of the front with a scarcely independent prominence, 

 the whole a little more than twice as broad as long, slightly narrower in front than 

 behind, separated from the prothorax by a distinct though slight sulcation, scarcely 

 more than half as wide as the widest part of the body; mesothorax slightly broader 

 than long, of nearly uniform breadth between the basal wing tnbercles and the abdo- 

 men, in front of the former sloping rapidly to the much narrower prothorax; basal 

 wing tubercles very blunt, being scarcely more than the angulation of the body ; viewed 

 from above the body increases in width posteriorly to the abdomen which has an inde- 

 pendent enlargement, being largest at the third segment (the broadest part of the 

 body), beyond which it tapers conically to the cremaster; viewed from the side the 

 curve of the anterior half of the body is scarcely affected by the thoracic sulcation, the 

 mesothoracic curve being very gentle and equal in front and behind ; beneath the 

 bluntly and regularly rounded head there is no angulation, the lower surface beyond 

 very regularly arched but with the wings much more protuberant than in Eudamus. 

 The position of the mandibles marked by a distinct, warty prominence on either side 

 of the base of the tongue. Prothoracic spiracles large, forming the third of a circle, 

 the posterior lip obsolete, guarded by a very broad, dense mass of exceedingly shor* 

 bristles which leave but a small, circular opening not a quarter the size of that in 

 Eudamus ; their outer extremities not surpassing the outer limits of the prothorax, so 

 that when viewed from above tiie antennae are seen outside of them. Hind legs and 

 antennae as in Eudamus, as also the carina of the movable abdominal segments. 

 Abdominal segments beyond the seventh entirely amalgamated, showing no sign of 

 sutures, except that faintly indicated by the coloring. Preanal button composed of a 

 low, pinched, pyramidal, lateroventral prominence, the two sides connected together b y 

 a strong, arcuate ridge and supported anteriorly by an expanding, lateroventral ridge 

 which fades out before reaching the seventh abdominal segment, and on the sides by 

 a looped ridge or thickening, open posteriorly, and whose lower apical angle is sepa- 

 rated by a sulcation from the highest point ; posteriorly it connects with the lower 

 outer sides of the cremaster proper, between which inferiorly the cremaster is broadly 

 sulcate. Cremaster preceded above at the base on the ninth abdominal segment by a 

 stout, transverse ridge as broad as it and which descends rapidly to its base ; cremaster 

 a little shorter than the fifth to seventh abdominal segments together, as viewed from 

 above triangular, excepting for the produced quadrate apex; deeply sulcate behind 

 this quadratic portion in a triangular, depressed field ; viewed laterally, it is gently 

 arcuate and tapers slightly to a truncate tip which, and which only, is armed with the 

 hooklets ; these do not essentially differ from those of Eudamus. 



