MEMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 75 



^DELOCEPH^LA. BISECTS Lintiiei-). 

 PI. XX, fig. 13,?, 149. 



AnUola bisecta Lintner, Can. Ent.. XI, p. 10, 1879. 



Sphingicampa bisecta var. nehulosa Neumcegen, Ent. Amer., VI, p. 63, 1.S90. 



Sphingicaiiipa biserla Kirby, Syn. Cat., Lep. Het., I, p. 740, 1892.— XEi-.M<»iEN- and Dyer, Jonrn. X. Y. Ent. Soc, 



II, p. 149, Dec, 1894. 

 Syssphinx bisecta Dy.^r, Proc. Ent. Soc, Wash., IV, p. 428, May 13, 1901. 



Larra. 

 Jewett, H. S., Papilio, II, p. 38, Mar., 1882. 



Imago. — S Antenna; of S with shorter and broader joints, and a little long-er pectinations than 

 in A. hicolor ; the distal third tiliform, and without the short vestigial pectinations of that sppcie.s. 



The front of the head is a little wider than in ^i. hicolor. 



Fore wings with the costa .straighter, the outer edge ol)lique, its course straighter, not so 

 full; hind wings shorter and rounder than in ^1. Incdlor and not reaching so near the end of tlie 

 abdomen as in that species. 



Body and wings rather pale in hue. ocherous; the thorax witli a slight pinkish hue in the 

 middle; abdomen paler, uniform ocherous. 



Fore wings without any distinct discal spot, only a very faint oval elliptical ring. The wing 

 is inside the extradiscal line nearlj' uniform ocherous, with l)ut few dark specks or strigpe, and 

 those minute and inconspicuous. Extradi.scal line oblique, lirm, not wavy or sinuous, a little 

 incurved on the costal edge before reaching the apex; tlie line is pale brown, edged externally 

 with pink, and the pink extends to the edge of the wing, including the fringe. 



Hind wings rounded at the apex, full on the outer edge, and rounded at the inner angle; 

 ocherous, pink toward the base and inner edge, while the costal region and the outer third or 

 fourth is ocherous. 



Under side of fore wings as above, but paler, the extradiscal oblique line is distinct and the 

 wing is pale ocherous within and pinkish beyond it. the wing also is pale ocherous toward the 

 costa and pink toward the iimer edge. A large diffuse double smoky discal spot, not present in 

 <S. hicolor. Hind wings pale ocherous, with coarse dark specks toward the costa, the rest of the 

 wing clear of them; outer margin ocherous, becoming paler toward inner edge; a faint extradi.scal 

 curved line which tends to fade out toward the inner edge. Legs didl pink red. 



9 Antenntv simple. Fore wings rounded, full, much as in ,1. hicolor^ but more rounded on 

 outer edge; hind wings rounded at the angles and excised, costally more than in A. hicolor., without 

 spots and with no median band, fore wings beneath with a diffused brown discal spot. It is paler 

 ocherous, with a more distinct extradiscal line than in any other North xVmerican species. 



Expanse of fore wings, $ 55 mm. ; length of a fore wing, S 26 mm. ; breadth of a fore wing. 

 S 13 mm.; length of hind wing. S 17 mm.; breadth of hind wing, S 13 mm. 



Resembles in shape of wings and head the Brazilian ,1. .^uhinujitlata more than any other 

 North American .species. For the genital armature see PI. LIX, tigs. 2. 2". 



Yb.v. nehuhmi, ? . The extradiscal line very distinct. l)lackisli brown; discal spot prominent, 

 suffused with blackish l)rown grains. Hind wings of a rich yellow, with a beautiful roseate basii 

 hue. fading toward the center. 



In the Neum(egen collection is an unnamed pair from Brazil of the size and shape of .1. 

 l>i,secta, but ? much like .1. hic<>ho\ It seems to represent .1. hlrolnr in South America. 



Larca.--DY. H. S. Jewett l)rietiy refers to the larva, as follows: "A larva found by a friend 

 (by bushbeating) in company with hin,h,r larviv. having no silver horns, but only the rudiments 

 on one segment, but otherwise resembling hicolur larva so closely that he supposed it to be otdy 

 larval variation, disclosed $ Anisofx his<>cf,i Lint." Papilio II. p. 40 (footnote). 1S82. 



Geograpliical (7/.s;'/77.i(/;'/«/(.~Austroriparian passing up into the Appalachian province: 

 Racine, Wis. (Hoy); Colunil)us. Ohio {\\ . N. Tallant); Kentucky (Doll); Texas (Meske. 

 Neumoegen). It has not yet been detected north of Kentucky and central Ohio (hit. 4U ) nor 

 along the Atlantic coast. (See Map II.) 



