MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 223 



are known to iuliabifc tlic Appahicliiaii aiul Aaslrorii)ariau siibprovinccs than any other region, 

 and none have j'et oceurreil on the I'acifie Coast above Mexico. Tlie genus is possibly of South 

 American origin. I have also in my collectioa a species structurally and in style of coloratiou 

 (juite near II. hiunduta collected on or near the coast of Brazil by the late Prof. C. F. Elartt. 



SYNOPSIS OF THE SPECIES. 



1. (Subgenus Lochiitwua.) Fore wing's long; discal scjuarisU black mark inclosed in whitisli gray. 



Fori) wings pule asb, crowuei! by four distinct scalloped lines H. manteo 



2. (Subgenus Cecriia.) Fore wings rather short, especially in J ; ajjox squarisb; discal mark diffuse, indis- 



tinct, gray, with olive green tint, and obscure scalloped inner aud outer Hues. 

 Palpi short, partly black ; fore wings ash-gray, often without a greenish tint ; transverse lines indistinct, 



discal mark usually inclosed in a large, diffuse lunate iiale ashen i)atch H. gutlivitta 



Palpi larger, blacker; body and fore wings more uniformly aud persistently olive-green than in guttiritta, 



scalloped Hues more distinct; no whitish ash discal patch; body and wings sometimes reddish 



instead of greenish H. biundata 



Antenna- plumose; outer edge and fore wings oblique; brown-gray, nuirkings much as iahiunddtii ; 



snbmarginal series of sublunate brown spots much as in biiiiidnla H. hiiiatn 



3. (Subgenus Hcterocdiiipa.) Autenna^ with long pectinations; discal mark curviliuear, black; wings 



greenish or brown, with distinct black stripes aud lines. 



a. Fore wiugs iiroduced toward apex, outer edge very ol)li<jue. 



Body and wings brown, the latter with black marks and reddish brown patches; a large oblique 

 subapical white shade JI. oblhiua 



Body and wings green; inner Hue ou fore wings less curved tbau in ohllqiia : marginal black lines 

 more deejily scalloped ; a thoracic crest M. cistarto 



Without the subapical white shade; a beavy, brokeu, scalloped submargiual line; hind wiugs with 

 a whitish Ihie S. piilverea 



Submargiual shade as in p»/re/-en, but more dislocated H. belfrayei 



b. Fore wings short and scjuare. 



Body and fore wings either uniformly ocherous or browu, with a hro-ad, white, subapical shade, and 

 a broad, curved, dark shade behiud the distinct discal mark H. suhrotata 



4. (Subgenus Lilodantii.) Antenna' of 9 heavily pectinated. 



X thoracic crest ; thorax and fore wings marked with sea-green S. hijdromeU 



5. (Subgenus filcmatocaiiipa (new).) Outer edge of wing oblique; no detiuite markings; of a pale ash or 



reddish brown hue. 

 Two faintly marked scalloped Hues ou fore wings S. unicolor 



SYNOPSIS OF THE ICXOWN LARV.E. 



A. Larva^ with-norraal anal legs aiul young larvie with normal piliferous warts. 



A broad reddish baud, extending from the side of tii'st, third, and sixth abdominal segments.. H. manteo' 



B. Young larva' armed with horns; .anal legs longer in full-fed larva'. 



Freshly hatched larva with nine pairs of horns; prothoracic pa^r of borus represented by tubercles in 

 stages II-IV; spots on the side of first, third, and sixth abdominal segments either absent or small. 



H. guttirilta 



Young larva (Stage I) with a single pair of horns, persisting as tubercles through Stage IV. A large 

 oblique russet spot ou side of first, third, and sixth abdomin.al segments H. biundata 



Full-grown larva with two prothoracic dorsal tubercles H. puherea 



Body of full-fed Larva thickened iu the middle; two dorsal red lines diverging on the first aud widest 

 apart on second abdominal segment, then converging only slightly toward the fourth aud fifth, 

 diverging very slightly again ou sixth and seventh ; in Stage I with six pairs of horns. . . H. obliqua 



C. Body with long black anal filaments iu Stage I; in last stage reduced to nearly normal length. 



Body green; a dorsal broad yellow aud red band; no lateral Hues H. unicolor 



