26 



TXNITED STATES NATIONAL MUSEUM BULLETIN 207 



on denuded wings under strong magnification they 

 appear to be stalked for half their lengths. Contains 

 one tropical American species. 



44. Anabasis ocfarodesma (Zeller), new combination 

 Figures 168, 652 



Myelois ochrodesma Zeller, Horae Soc. Ent. Rossicae, vol. 16, 



p. 209, 1881. 

 Piesmopoda ochrodesma (Zeller) Ragonot, Monograph, pt. 1, 



p. 165, 1893. 

 Acrobasis crassisquamella Hampson, in Ragonot, Monograph, 



pt. 2, p. 520, 1901 (new synonymy). 



Forewing grayish brown finely powdered with 

 blackish scales and with a faint rosy suffusion; ante- 

 medial line oblique, narrow, obscured by a heavy whit- 

 ish ocherous ridge of raised scales on its inner margin 

 and bordered outwardly by a narrow black fine; sub- 

 terminal line obsciu-e, narrow, when distinguishable, 

 sinuate, ocherous white, bordered inwardly by an 

 obscm-e, broken, black line; discal and terminal dots 

 obsolete. Hind wing smoky white; veins and a narrow 

 shade along termen, fuscous. Alar expanse, 13-16 mm. 



Genitalia as given for the genus; bursa of female with 

 small signum. 



Type localities: Honda, Colombia (ochrodesma, in 

 BM) ; Teapa, Tabasco, Mexico (crassisquamella, in BM) . 



Food plants: Cassia alata. Cassia nodosa. Cassia tora 

 (U. S. Dep. Agr. Florida rearings; larva a leaf-folder), 

 Sciacassia siamea. 



Distribution: United States: Florida, Coconut 

 Grove (May), Miami (May), St. Petersburg (June). 

 Puerto Kico: Bayam6n (Sept.), Coamo Springs (Apr.), 

 Mayagiiez (Jan.), Puerto Eeal (Vieques Isl., Apr.), Rio 

 Piedras (Feb.). Virgin Islands: Kingshill (St. Croix, 

 Oct., Nov., Dec). Cuba: Santiago de las Vegas 

 (Havana, Dec). Grenada. Jamaica. Trinidad: 

 Fyzabad (Feb.), Tunapuna (Apr.). Mexico: Tabasco, 

 Teapa. Guatemala: Quirigu^ (May). PanamX: 

 Corozal (July), Porto BeUo (Apr.). Colombia: Honda. 



An easUy recognized tropical American species whose 

 range has been extended into southern Florida. 



6. Genus Mildrixia Dyar 



Mildrixia Dyar, Proc. U. S. Nat. Mus., vol. 47, p. 405, 1914. 

 (Type of genus; Mildrixia consiitutionella Dyar.) 



Tongue well developed. Antenna of male strongly 

 ciliate, the cUia over three times longer than width of 

 segments; basal segment elongate, subtubular, flat- 

 tened and broadening towards apex; first segment of 

 shaft swoUen and with a short spine and scale tuft from 

 inner upper angle (this with the rough scahng of basal 

 segment gives the latter when fully scaled the appear- 

 ance of the triangulate first segment of Acrobasis); 

 antenna of female simple and very weakly pubescent. 

 Labial palpus obliquely ascending, reaching to slightly 

 above vertex; moderately rough scaled beneath; third 

 segment acuminate, about two-thirds the length of 

 second. Maxillary palpus moderately large, squamous. 

 Forewing narrowly elongate, with transverse, ante- 



medial ridge of raised scales; 11 veins; vein 2 from 

 before, but near lower outer angle of cell; 3 from the 

 angle, approximate to 2 at base and for a short distance 

 beyond; 4 and 5 connate or very shortly stalked; 6 

 from very close to upper angle of cell, closely approxi- 

 mate to 8 at base, nearly straight (very slightly bent 

 towards base); 10 from the cell, closely approximate to 

 the stalk of 8-9 for some distance from cell; male with- 

 out costal fold. Hind wing with vein 2 from before 

 but close to lower outer angle of cell; 3 contiguous with 

 the stalk of 4-5 for some distance from angle, on 

 undenuded wings appears stalked with 4-5; 4 and 5 

 stalked for more than half their lengths; 7 and 8 

 contiguous or weakly anastomosed for a short distance 

 beyond cell; cell one-third the length of wing; disco- 

 cellular vein oblique. Eighth abdominal segment of 

 male with broad ventral hair tuft. 



Male genitalia of the old world Acrobasis type 

 except: Uncus subtriangulate, its apex rather broadly 

 rounded; transtiUa terminating posteriorly in a U- 

 shaped projection with elongate, slender, widely spaced 

 and divergent arms; vinculum longer than broad, evenly 

 tapering to bluntly pointed terminal margin; anellus 

 an elongate, semitubular plate with short lateral lobes 

 near base; penis armed with a short, sclerotized plate 

 and numerous sclerotized wrinklings. 



Female genitalia of the Acrobasis type but without 

 any sclerotized plate or plates at genital opening; a 

 single signum in bursa, developed as a small, cupped, 

 granulate plate. 



A distinct genus, distinguished at once by its male 

 antenna, venation, and transtiUa. Contains one 

 tropical American species. 



45. Mildrixia coustitutionella Dyar 



FiGUHES 169, 651 



Mildrixia constitutionella Dyar, Proc. U. S. Nat. Mus., vol. 47, 

 p. 405, 1914. 



Forewing grayish fuscous with some whitish dusting, 

 especially in median area about the discal spots; ante- 

 medial scale ridge blackish preceded by a narrow white 

 line and followed by an indistinct dark shade; discal 

 dots at end of cell distinct, black; just beyond the lower 

 discal dot, an outwardly angled mark from the upper 

 edge of which a narrow dark shade extends to the 

 inner costal edge of the subterminal line (distinct only 

 on weU-marked and unrubbed specimens) ; subterminal 

 fine narrow, denticulate, pale, bordered inwardly and 

 outwardly by somewhat broader dark lines; terminal 

 dots blackish, more or less confluent. Hind wing trans- 

 lucent, opalescent white, the veins faintly darkened 

 toward their outer extremities, especially on the females; 

 a dark shade along costa and a narrow one along termen. 

 Alar expanse, 19-22 mm. 



Genitaha as given for the genus. 



Type locality: Jalapa, Mexico (type in USNM). 



Food plant: Unknown. 



Distribution: Mf;xico: Jalapa. Guatemala: Vol- 

 cdn Santa Maria (June, July, Oct.). 



